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13.5/354-00/03.03E

Conex® 354 Duo

Multipurpose InstrumentAmplifiers and Controllers354-2200 und -2205

Operation and Service Manual

Please read the Operating and Servicing Manual completely and retain forfuture reference!

Copies for your own requirements should always be double sided!

01.9003-24



2 3.5/354-00/03.03E

Imprint

Conex ® Duo 354-2200 and -2205

Multipurpose Amplifiers and Controllers

Operation and Service Manual

Issued by:

ALLDOS Eichler GmbH

Reetzstraße 85 • 76327 Pfinztal (Söllingen)

Postfach 1160 • 76318 Pfinztal

Germany

Tel. ++49 (0) 72 40 61-0 / Fax ++49 (0) 72 40 61-177

E-Mail: [email protected]

Internet: http://www.alldos.com

© 2003 by ALLDOS Eichler GmbH

Subject to change.



33.5/354-00/03.03E

A few words in advance

Welcome to ALLDOS! The Conex® 354 Duo Multipurpose Instrumentamplifier and Controller you have just purchased is a product using thecompany’s leading-edge measuring technology.

Conex® 352 Dosipos is a multipurpose device designed to carry out high-precisionmeasurements and controls

a value from parameter group 1:

❏ chlorine, chlorine dioxide, ozone and hydrogen peroxide

and a value from parameter group 2:

❏ pH value

The integrated controller, the high-resolution graphics display, and the multilingualplain-text user interface make complicated test and control tasks in water chemistrymuch easier.

Just a few keypad inputs lead you to your goal. The potentiostat helps you save evenmore time, being automatically matched to the various input variables.

The safety standard of the dosing process is raised by the automatic open-circuitmonitoring of the current loops.

Properties of the Conex ® 354 Duo instrument amplifier include:

❏ All control functions including PID and continuous-action controls

❏ Setpoint control

❏ Automatic temperature compensation

❏ Logbook function: chronological recording of calibration values withdate and time

❏ User coding function as a means of protection against access byunauthorized persons and for system administration

❏ Error message function for indication of non-functioning sensors



4 3.5/354-00/03.03E

ContentsContentsContentsContentsContentsImprint .................................................................................................... 2A few words in advance ......................................................................... 3Installation data ...................................................................................... 6Installation diagram ................................................................................ 7Instrument settings ................................................................................ 8

1 General ................................................................................................ 101.1 Using this Documentation ..........................................................101.2 Guarantee ..................................................................................11

2 Safety information ................................................................................112.1 Use of the Device ....................................................................... 112.2 Obligations of Owner .................................................................. 122.3 Avoidance of Danger .................................................................. 12

3 Technical Data .....................................................................................133.1 Available Designs .......................................................................133.2 General Data ..............................................................................133.3 Electronics Data and Functions .................................................. 14

3.3.1 Electronics...................................................................................143.3.2 Functions of the Instrument Amplifier ..........................................143.3.3 Setpoint Controller Functions ......................................................14

3.4 Measuring Ranges ..................................................................... 153.5 Dimensions ................................................................................ 16

4 Installation ............................................................................................ 17

4.1 Transport and Storage ................................................................ 174.2 Unpacking ..................................................................................174.3 Installation Requirements ...........................................................174.4 Installation in Control Panel ........................................................ 184.5 Installation in Wall-Mounted Enclosure....................................... 19

5 Commissioning/Electric Connections .................................................. 215.1 Terminals ....................................................................................22

5.1.1 Wall-Mounted Enclosure Conex® Dosipos 352-2200 .................225.1.2 Control Panel Enclosure Conex® Duo 354-2205 ........................ 23

5.2 Power Supply Connection ..........................................................245.3 Relay Outputs............................................................................. 245.4 Current Outputs.......................................................................... 255.5 Connection of Controller Stop, Sample-Water Sensor and

Temperature Sensor ..................................................................275.6 Connection of Measuring-Cells ..................................................28



53.5/354-00/03.03E

6 Operation ............................................................................................. 316.1 Controls and Displays ................................................................316.2 Display Elements during Initial Commissioning .......................... 32

6.2.1 Display Modes............................................................................. 34

6.3 Software Overview ..................................................................... 366.4 Main Menu ................................................................................. 386.5 Setup ..........................................................................................39

6.5.1 Selection of Measured Values Chlorine, Chlorine Dioxide,Ozone and pH .............................................................................39

6.5.2 pH- and Temperature Compensation ..........................................40

6.5.3 Selection of Measuring Cell ........................................................406.5.4 Setting the Measuring Ranges for Chlorine, Chlorine Dioxide,

Ozone, Peroxide and pH .............................................................416.5.5 Controller Parameters 1 / 2 .........................................................416.5.6 Water Sensor .............................................................................. 426.5.7 Setting the Current Time (Date/Time/Summer Time) .................. 426.5.8 Code Function ............................................................................. 436.5.9 Adjusting Display Contrast ..........................................................446.5.10 Factory Settings ..........................................................................456.5.11 Current Outputs ...........................................................................466.5.12 Program Version ..........................................................................47

6.6 Selection, Configuration and Parameterization of the Controller 486.6.1 Selection and Configuration of the Controller .............................486.6.2 Setting the Controller Parameters ............................................... 50

6.6.3 Controller Control Fields on the Display......................................516.6.4 Adaptation ...................................................................................52

6.7 Menu „alarm“ .............................................................................. 536.7.1 Setting Alarm Values ...................................................................546.7.2 Dosing Time Monitoring ..............................................................55

6.8 Checking the Settings in the Menu „service“ .............................. 566.9 Calibration .................................................................................. 59

6.9.1 Peculiarities with the Calibration for Chlorine with pH-Compensation .............................................................................59

6.9.2 Calibrating the pH-Value .............................................................606.9.3 Calibration for the Parameters Chlorine, Chlorine Dioxide,

Peroxide and Ozone ....................................................................63

6.10 Manual Operation ....................................................................... 64

6.10.1 Manual Operation with Preconfigured Two-position- andContinuous Controllers................................................................65

6.10.2 Manual Operation with Preconfigured Limit Contact / Continuous Controller .................................................................66

7 Troubleshooting ................................................................................... 678 Maintenance ....................................................................................... 69



6 3.5/354-00/03.03E

Installation data

NOTE

Please fill in this form following commissioning. It will help you and your ALLDOS servicing partner to adjust the device during subsequent corrections .

Owner :

ALLDOS customer No .:

Contract No .:

Order No. of device :

Serial number of device :

Put into service on :

Location of device :

Used for :



73.5/354-00/03.03E

Installation diagram



8 3.5/354-00/03.03E

parameter 1

limit monitor

control direction

control response

setup

measuring range

current output 1

peroxide

chlorine dioxide

chlorine

ozone

temp. measurement

no

yes

no

yes

no

yes

temp. compensation

pH compensation

mg/l (ppm)

mA

alarm

off

on

downward violation

upward violation

alarm value 1

alarm

switching point

alarm value 1switching direction

downward violation

upward violation

alarm value 2switching point


hysteresis

alarm delay

controller

setpoint contrl.

limit

off

interpulse controller

pulse freq. controller

continuous controller

downward violation

upward violation

downward control

upward control

PI

PID

P

s

controller

proportional Xp

%

reset time Tn(PI/PID control)

constant load

s

%

deriv. action time Tv(PID control)

max. dosing flow

s

%

pulse + pause time(interpulse controller)

s

min. ON time(interpulse controller)

hysteresis(limit monitor)

s

max. frequency(pulse freq. controller)

I /min

limit(limit monitor)

setpoint(limit monitor)

dosing time monitoring

min

off

on

dosing time monitoringmax. dosing time

parameter

measuring cell type

cleaning motor

monitoring off

monitoring on

water sensor

off

on

measuring cell

Instrument settings



93.5/354-00/03.03E

parameter 2

limit monitor

control direction

control response

setup

measuring range

current output 1

pH

temp. measurement

noyes

no

yes

no

yes

temp. compensation

pH compensation

mg/l (ppm)

mA

alarm

off

on

downward violation

upward violation

alarm value 1

alarm

switching point


downward violation

upward violation

alarm value 2switching point


hysteresis

alarm delay

controller

setpoint contrl.

limit

off

interpulse controller

pulse freq. controller


downward violation

upward violation

downward control

upward control

PI

PID

P

s

controller

proportional Xp

%

reset time Tn(PI/PID control)

constant load

s

%

deriv. action time Tv(PID control)

max. dosing flow

s

%

pulse + pause time(interpulse controller)

s

min. ON time(interpulse controller)

hysteresis(limit monitor)

s

max. frequency(pulse freq. controller)

I /min

limit(limit monitor)

setpoint(limit monitor)


min

off

on

dosing time monitoringmax. dosing time

parameter



10 3.5/354-00/03.03E

1 General

This document contains all information important for users of the Conex ® 354 Duo:

❏ Technical data

❏ Instructions on commissioning, handling and maintenance

❏ Safety information

Should you require further information, or should particular problems occur which arenot handled in sufficient depth in this Manual, please contact ALLDOS directly for therequired information. We will enjoy supporting you with our comprehensive know-howin the fields of Measuring and Control Technology and water conditioning.

You can contact the ALLDOS service department by fax or via our hotline:

Fax-Nr.: ++49 (0) 7240 61-211 - Reference „Quality-Service“,Hotline: ++49 (0) 7240 61-226

We always welcome any suggestions on how to optimize our Servicing- andOperating manual in terms of customer satisfaction.

1.1 Using this Documentation

❏ Descriptions are written in normal continuous text.

❏ Lists are identified by squares (❏), subdivisions by dashes (-).

❏ Steps requiring operations are identified by bold dots (l) subdivisionsby smaller dots (•).

❏ Cross-references are indicated by italic letters and an arrow (➜).

❏ The safety instructions WARNING , CAUTION and NOTES have thefollowing meanings:

WARNING !

Danger of injuries and accidents!

CAUTION

Danger of malfunctioning or damage to the device!

General



113.5/354-00/03.03E

WARNING

Danger from electric current!

NOTE

Exceptional feature.

1.2 GuaranteeA guarantee claim in the sense of our general conditions of sale and delivery can onlybe recognized if

❏ the device has been used according to the information in thisOperating- and Servicing Manual,

❏ the device has not been opened or incorrectly handled in any manner.

2 Safety information

2.1 Use of the Device

Conex ® 354 Duo instrument amplifiers and controllers are designed to measure theconcentration of chlorine (Cl

2), chlorine dioxide (ClO

2), ozone (O

3), hydrogen peroxide

(H2O

2) and pH, and to control these concentrations using appropriate final control

elements within the context of the possible applications described in this Manual.

WARNING

!Other applications are considered as non-approved, and are not permissible. ALLDOS Eichler GmbH cannot be held liable for any damage resulting from such use.

Safety Information



12 3.5/354-00/03.03E

2.2 Obligations of Owner

The owner agrees to only permit persons to work with the described device who

❏ are acquainted with the regulations concerning working safety andaccident prevention,

❏ have been trained in use of the device,

❏ have read and understood the warning information and handlingsymbols.

The owner is also responsible for ensuring that this Manual is kept in the immediatevicinity of the device and is always available for the operating personnel.

2.3 Avoidance of Danger

WARNING

!Installation and connection of the device and the associated supplementary components must only be carried out by qualified specialists!

The local safety regulations must be observed! Switch off the mains voltage before connecting the power cable and the relay contacts!

Do not open the device! Maintenance and repairs must only be carried out by authorized specialists!

Caution

The mounting location must be selected such that the housing is not subjected to mechanical loading.

Check that all settings are correct before starting up the device!

Safety Information



133.5/354-00/03.03E

3 Technical Data

3.1 Available Designs

Order-No. Enclosure Degree of protection

354-2200 Wall-mounted enclosure IP 65(distance from sensors up to 3 m)

354-2205 Control panel enclosure IP 54 (front)incl. separate potentiostat IP 65(distance from sensor interface up to 100 m,distance from sensor interface to sensors up to 3 m)

3.2 General Data

Power consumption Approx. 15 VA

Permissible ambient temperature 0 to +50 °C

Permissible storage temperature -20 to +65 °C

Permissible humidity Max. 90% at 40 °C (non-condensing)

Weight 1.5 kg

Enclosure Plastic : control panel enclosure: Norylwall-mounted enclosure: ABS

Supply voltage Index No. Description

V00 Supply voltage 230 V(50/60 Hz)(standard model)

V01 Supply voltage 115 V (50/60 Hz)

V03 Supply voltage 24 V DC

Technical Data



14 3.5/354-00/03.03E

3.3 Electronics Data and Functions

3.3.1 Electronics

Electronics 16-bit microprocessor

Display High-resolution graphics LCD with backgroundlighting

Potential-free 1 alarm relay, 2 controller relaysrelay outputs (250V/6 A, max. 550 VA)

Signal inputs Controller stop; disturbance variable 0/4 - 20 mA;

water sensor

Signal outputs 4 analog outputs 0(4)-20 mA, freely adjustable,max. load 500 W

Analog output Assignment/Measured value

1 Parameter group 1: chlorine, chlorine dioxide, ozoneor peroxide

2 Parameter group 2: pH

3 For temperature or continuous control(0/4-20 mA) of the parameters from group 2 (pH)

4 For continuous control (0/4-20 mA) of theparameters from group 1 (chlorine, chlorine dioxide,ozone or peroxide)

3.3.2 Functions of the Instrument Amplifier

Mode of display Display of measured value + physical dimension,temperature display, in °C or °F

Temperature compensation Manual or automatic with Pt 100 (-5 to +120 °C)

Calibration Manual CAL with Auto-Read,automatic recognition of buffer solution with pH

3.3.3 Setpoint Controller Functions

Controller output Limit monitor,

interpulse controller (P, PI, PID),pulse frequency controller (P, PI, PID),continuous controller (P, PI, PID)

Limit 0 to 100% of measuring range, adjustable inphysical variable of measured value (only with limitmonitor)

Hysteresis 0 to 50% of full-scale value, adjustable in

Technical Data



153.5/354-00/03.03E

physical variable of measured value (only with limitmonitor)

Setpoint input 0 to 100% of measuring range, adjustable inphysical variable of measured value

Proportional band X p

0.1 to 3000.0%

Reset time T n

1 to 3000 s, resolution 1 s (only with PI, PIDcontrollers)

Derivative action time T v

0 to 1000 s, resolution 1 s (only with PID controller)

Pulse + pause time 1 to 100 s (only with interpulse controller)

Minimum ON period T min 0.1 to 10.0 s (only with interpulse controller)Maximum frequency 1 to 180 pulses per minute

(only with pulse frequency controller)

Basic load 0 to 50% dosing rate

Maximum dosing rate Value (basic load + 1) to 100% dosing rate

Control direction Adjustable to upward or downward control

Controller stop Adjustable to NC or NO

3.4 Measuring Ranges

Cl2 ClO2 O3 H2O2 pH

(mg/l) (mg/l) (mg/l) (mg/l) (pH)

0.00 - 0.50 0.00 - 0.50 0.00 - 0.50 0 - 100 0.00 - 14.00

0.00 - 1.00 0.00 - 1.00 0.00 - 1.00 0 - 500 2.00 - 12.00

0.00 - 2.00 0.00 - 2.00 0.00 - 2.00 0 - 1000 5.00 - 9.00

0.00 - 5.00 0.00 - 5.00 0.00 - 5.00 0 - 2000

0.00 - 10.00 0.00 - 10.00 0.00 - 10.00

0.00 - 20.00

NOTE

The measuring ranges are also freely-adjustable (within the above-mentioned range limits).

In the case of chlorine, chlorine dioxide and ozone, the free adjustment of the measuring range can be extended up to max. 50.0 mg/l.

Technical Data



16 3.5/354-00/03.03E

3.5 Dimensions

Wall-Mounted Enclosure Conex ® Duo 354-2200

59

1 2 5

84

5 9 ,

5

1 8 4

, 5

212

198

10

1 4

5

2 7

1 1 0

180

Ø 4,5

Control panel Enclosure Conex ® Duo 354-2205

9096

9 6

166

9 0

158

9 0

18

Technical Data



173.5/354-00/03.03E

4 Installation

4.1 Transport and Storage

● Transport device carefully, do not drop!

❏ Store at dry and cool location.

4.2 Unpacking

● Install as soon as possible following unpacking.

●Check device for damage.• Do not install or connect damaged devices!

NOTE

Retain packing material or dispose of according to local regulations.

4.3 Installation Requirements

❏ Dry room

❏ Room temperature 0 °C to 50 °C

❏ Vibration-free location

CAUTION

If you do not observe the installation requirements: ❏ The device may be damaged ❏ Faulty measurements may occur

Technical Data



18 3.5/354-00/03.03E

4.4 Installation in Control Panel

Conex ® Duo 354-2205 Sensor Interface

92+0.8

92+0.8

> 20

> 20

132

121

● For Conex ® Duo 354-2205:Make an opening (92 + 0.8) mm x (92 + 0.8) mm in the control panel.

● Slip on the supplied gasket.

● Insert device into opening from the front.

CAUTION

Do not damage the gasket! The gasket must be fitted exactly!

● Hook the clamps into the fastening cones on the sides at the top and bottom.

● Secure the device from the rear, using a screwdriver.

● Install seperate sensor Interface near the sensors (max. distance 3 m).

Installation



193.5/354-00/03.03E

4.5 Installation in Wall-Mounted Enclosure

WARNING

Switch off power supply before installing!

The degree of protection IP 65 is only guaranteed with the front panel of the terminals enclosure closed and with appropriate cable glands or dummy caps.

198

1 4 5

2 7

10,5

Installation



20 3.5/354-00/03.03E

● Drill three holes (8 mm diam.) as shown in the diagram and insert thesupplied dowels.

● Screw the screw (A) into the top center dowel until it projects by approx. 1 cm.

● Loosen the fastening screws of the front panel and remove the front panel.

● Hang the instrument onto the screw (A).

● Tighten the instrument with the two screws (B).

CAUTION

Degree of protection IP 65 is only guaranteed with the terminal cover correctly sealed! Do not damage the terminal cover gasket! The terminal cover gasket must sit exactly!

● Mount front panel of the enclosure.

DOWN

ENTER UP ESC

AUTO MAN

CALMESS

CONEX CONEX ® ®

B

B

A

Installation



213.5/354-00/03.03E

5 Commissioning/Electric Connections

WARNING

Switch off the power supply before connecting the mains cable and relay contacts!

Observe the local safety regulations!

Protect the cable connections and plugs from corrosion and moisture.

CAUTION

Before connecting the mains cable: Check that the power supply specified on the rating plate corresponds to the local supply. An incorrect supply voltage may destroy the device! To guarantee electromagnetic compatibility (EMC): The input- and current output cables must be screened! Connect screen at one end to PE.➜ Refer to the connection diagram! Route the input-, current output and power supply cables in separate ducts.

Installation



22 3.5/354-00/03.03E

5.1 Terminals

5.1.1 Wall-Mounted Enclosure ConexConexConexConexConex®®®®®DosiposDosiposDosiposDosiposDosipos 352-2200

● Remove cover of terminal.

15 17 19 21 23 25 27 29 31 33 35

3634323028262422201816

15 17 19 21 23 25 27 29 31 33 35

3634323028262422201816

1 3 5

2 4 6

37 38 39 40 41 42

L N PE

37 =38 = M

15 17 19 21 23 25 27 29 31 33 35

3634323028262422201816

Cells314-7xx

314-8xx

15 (wh)16 (br)

17 - 2223 - 30

32,34,36

8 10

7 9

Relays

1 2

Alarm

N.C.

N.O.

11 13

12 14

21/22 = Pt 100

19 = + H 2 O , 20 = – H 2 O (Water)

17/18 = Controller Stop

1

2

3

4

Cl 2 , ClO 2 , O 3,

H 2 O 2 , PAA

T /

+ –mA

pH, mV, F –mA

mA

mA

33/35

mA

L N PE

mASensors

Cells/Electrodes

39 = B/R 40 = G/C

mA

External

Input Outputs

+ –

+ –

+ –

+ –

41/42 = +/– mV

– pH

F

1 4

External

Input

Outputs 1 4Sensors

P1

P2

P2

P1

Commissioning / Electric Connections

Legend of the terminal plan

Relays: relay 1 + 2Alarm: alarm-relay

- N.O.: normally opened

- N.C.: normally closed- Pt100: temperature sensor Pt 100

- H2O: water sensor- Stop: controller stop (NO or NCselectable)Sensors:mA: current outputs1: Cl

2 (chlorine), ClO

2(chlorine dioxide),

O3:(ozone), H

2O

2(hydrogen peroxide),

PAA (peracetic acid)

2: pH, mV (redox), F– (fluoride)

3: T / P2: temperature / continuous

controller parameter 2

4: P1: output of continuous controller

parameter 1

External input:Electrodes:M: measuring electrode

: earth

B/R: reference electrode

mV: Redox electrode

G/C: counter electrode

F – : fluoride electrode: screen



233.5/354-00/03.03E

5.1.2 Control Panel Enclosure ConexConexConexConexConex®®®®®DuoDuoDuoDuoDuo 354-2205

Conex ® Duo 354-2205 back view of device

2/1

2/2

2/3

2/4

2/1, 2/2 = Controller Stop

5/1 - 5/5

2/3 (+), 2/4 (–)= WaterH 2 O

Sensor Interface

+ –

M B/R G/C Pt 100

3/1 - 3/4Electrodes

pH, mV, F –Cl 2 , ClO 2 ,

O 3, PAA,

H 2 O 2

Cells / Electrodes

pH, mV, F –

3/1

3/2

3/3

3/4

4/1

4/2

4/3

4/4

7/1

7/2

7/3N.C.

N.O.

Alarm

8/1

8/2

8/3

PE N

L

1/1 (br), 1/2 (wh)Cells: 314-7xx

314-8xx

Connection toConex 352

6/1

6/2

6/3

6/4Relays

1

2

A 1/1 (br)B 1/2 (wh)

Cells: 314-7xx 314-8xx

A 2/3 (+)B 2/4 (-)

Water H 2 O 1/111/13 4/1

1/12 1/14

4/3

4/2 4/4

3/1 3/3

3/2 3/4 B

A

1/11 -1/14Pt 100

4/1 - 4/4Cells

Conex 352

5/1

5/2

5/3

5/4

5/5

OFF On

DIP

Jumper

External

Input

5/1

5/2

5/3

5/4

5/5

1

2

3

4

/ T

mA

Cl 2 , ClO 2 ,

O 3 , H 2 O 2 ,

PAA (P1)

pH, mV,

F (P2) –

mA

+ –

Outputs

5/1 - 5/5

4 11/1

1/2

1/3

1/4

1/5

1/6

1/7

1/8

1/9

1/10

1/11

1/12

1/13

1/14

P1

P2

Control panel enclosure Conex ® Duo 354-2205❏ Conex ® Duo 354: for installation in the control panel❏ Sensor Interface: for installation near the sensors

Use the following cable to connect the sensor interface to the Conex ® Duo 354-2205:

Order No. Description

321-131 Shielded cable, 4 x 0.5 mm2, sold by meter




24 3.5/354-00/03.03E

5.2 Power Supply Connection

● Control panel enclosure: Plug the plug-strip into the correspondingterminal-strip at the rear side of the device. Ensure correct orientation.

● Connect protective conductor (PE) to terminal 5 (wall-mounted enclosure), toterminal 8/1 (control panel enclosure) resp.

● Connect neutral conductor (N) to terminal 3 (wall-mounted enclosure), toterminal 8/2 (control panel enclosure) resp.

● Connect phase (L1) to terminal 1 (wall-mounted enclosure), to 8/3 (controlpanel enclosure) resp.

Switch the device on and off by switching the supply voltage accordingly. The deviceitself does not feature a separate power switch.

5.3 Relay Outputs

NOTE

The connection of the relay outputs depends on the application and the final control elements used. Therefore the connections described below should only be considered as guidelines.

With inductive loads (also relays and contactors) interference suppression is

necessary. If this is not possible, protect the relay contacts using a suppressor circuitas described below.

❏ With AC voltage:

Current up to Capacitor C Resistor R

60 mA 10 nF 260 V 390 W 2 W

70 mA 47 nF 260 V 22 W 2 W

150 mA 100 nF 260 V 47 W 2 W

1.0 A 220 nF 260 V 47 W 2 W

❏ With DC voltage: connect free-wheeling diode in parallel to relay or contactor.

CAUTION

You must provide the relay outputs with a corresponding backup fuse!




253.5/354-00/03.03E

+

-

R

C

DC AC

5.4 Current Outputs

CAUTION

Ensure correct polarity! Maximum load: 500 W.

❏ The current loops can be set either to one of the two standard ranges“0-20 mA“, „4-20 mA“ resp., or can be freely adjusted.

●Connect screen to earth (PE) at one end.

Output 1: Chlorine, Chlorine Dioxide, Ozone or Hydrogen Peroxide (param. 1)

❏ This current output outputs the displayed measured value as an analogcurrent signal.

Use of current signal for measured values:

❏ As input signal for another indicator

❏ As input signal for an external controller

● Connect +conductor to terminal 23 (wall-mounted enclosure), to terminal 1/3(control panel enclosure) resp.

● Connect -conductor to terminal 24 (wall-mounted enclosure), to terminal 1/4(control panel enclosure) resp.




26 3.5/354-00/03.03E

Output 2: pH (parameter 2)

❏ This current output outputs the displayed measured value as an analogcurrent signal.

Use of current signal for pH:

❏ As input signal for another indicator

❏ As input signal for an external controller


● Connect -conductor to terminal 26 (wall-mounted enclosure), to terminal 1/4

(control panel enclosure) resp.

Output 3: Continuous Controller Parameter 2 (or Temperature)

❏ Outputs the calculated manipulated variable signal of the controller as an ana-log current signal.

Use of manipulated variable signal:

❏ As input signal for a final control element with current input

or temperature output:

❏ Outputs the temperature measured by the optional temperature sensor asan analog current signal.

Use of temperature current signal:❏ As input signal for an indicator



Output 4: Continuous Control Parameter 1

❏ This current output outputs the calculated actuating signal as an analogcurrent signal.

Use of actuating signal:

❏ As input signal for a continuous final control element






273.5/354-00/03.03E

5.5 Connection of Controller Stop, Sample-Water Sensor andTemperature Sensor

Connecting the Controller Stop


● Connect –conductor to terminal 18 (wall-mounted enclosure), to terminal 2/2(control panel enclosure) resp.

Connecting the Sample-Water Sensor

➜ Cable colours and -marking: see Connection of Measuring-Cell Types314-3xx/6xx/9xx



➜ If measuring cell 314-9xx is selected the water sensor has always to beconnected!

Connecting the Temperature Sensor Pt 100






28 3.5/354-00/03.03E

5.6 Connection of Measuring-Cells

Wall-Mounted Enclosure Conex ® Duo 354-2200

counter electrode

measuring

electrode

brown white

37 383940 4142

outside cable(shielding)

1517 192123252729313335

3634323028262422201816

brown

bluewater sensor

Measuring Cells 314-9xx

(reference electrode)

inside cableMeasuring Cells 314-6xx

(reference electrode)inside cable

counter

electrode

measuring

electrode

brown

green/

white

37 383940 41 42

1517 192123252729313335

3634323028262422201816

"11"

"12"

water sensor


single rod measuring

chains for pH

37 38 39 40 41 42

+ inside cable

- outside cable

single rodmeasuring chains


37 383940 4142inside cable

(measuring electrode)

counter electrode

outside cable(reference electrode)

water sensor

15 17 19 2123 25 27 29 31 3335

3634323028262422201816

brown

blue




293.5/354-00/03.03E

Control Panel Enclosure Conex ® Duo 354-2205

M B/RG/C


inside cable(reference electrode)

counter electrode

measuring electrode

brown

white

blue

brown1/111/134/1

1/121/14

4/3

4/2 4/4

3/1 3/3

3/2 3/4 B

A

water sensor

Conex

2/3 2/4+ -


Sensor-Interface


1/111/13 4/1

1/12 1/14

4/3

4/2 4/4

3/1 3/3

3/2 3/4 B

A

M B/R G/C

water sensor blue

brown

inside cable(measuring electrode)

counter electrode

outside cable(reference electrode)

Sensor-Interface

Conex

2/3 2/4+ -

M B/R G/C


inside cable(reference electrode)

counter electrodemeasuring electrode

brown

green/white

"12"

"11"1/11 1/13 4/1

1/12 1/14

4/3

4/2 4/4

3/1 3/3

3/2 3/4 B

A

water sensor

Conex

2/3 2/4+ -


Sensor-Interface

single rod measuring

chains for pH

+ –

pH, mV, F

inside cable

outside

cable

single rod

measuring

chains

–

Peculiarities with the connection at the control panel enclosure Conex ® Duo354-2205

● First connect the measuring cells and the water sensor (if present) to theseparate sensor interface.

● Then connect the sensor interface to the Conex ® Duo 354-2205 control panelenclosure.




30 3.5/354-00/03.03E

Connect Sensor Interface at Conex ® Duo 354-2205 (see back side of device)

● Measuring cells 314-3xx/6xx/9xx: Connect terminals 4/1 to 4/14 of SensorInterface with corresponding terminals of Conex ® Duo 354.

● Single rod measuring chains (pH): Connect terminals 3/1 to 3/4 of SensorInterface with corresponding terminals of Conex ® Duo 354.

● Sample water deficiency sensor: Connect terminal A with terminal 2/3 andterminal B with terminal 2/4 of Conex ® Duo 354.

➜ If measuring cell 314-9xx is selected the water sensor has always to be

connected!

DIP-switch and Jumper-setting:

● If necessary, set the DIP-switch for the desired measured value to „ON“ (movethe switch to the right, top switch 1 is not used)

● Jumper: Only for peroxide measurements: with cell types 314-3xx/6xx/-9xx:Move the wire strap of the jumper (blue) to the higher position (Pos. 2)

OFF OnDIP

2

3

4

1

H2O2

ClO2, O3

Cl2 Jumper

1

2 2: 314-3xx/6xx/9xx




313.5/354-00/03.03E

6 Operation

6.1 Controls and Displays

Wall-Mounted Enclosure Conex ® Duo 354-2200Control panel Enclosure Conex ® Duo 354-2205

DOWN

ENTER UP ESC

AUTO MAN

CALMESS

CONEX CONEX ® ®

1 86 5 4 3 7

AUTO MAN

MESS

CAL

ENTER DOWN

UP

ESC

CONEX CONEX ® ®

7 8 1

6 5 4 3

2

2

1 Alarm-LED flashes red in case of faults or incorrect entries

2 Display

Operator keys

3 Key ENTER :

❏ Enter the chosen menu.

❏ Confirm chosen line or chosen value.

4 Arrow key DOWN :

❏ Move the data shown in thedisplay one line downward.

- The chosen line is inverted.

❏ Reduce value to be set.

5 Arrow key UP :

❏ Move the data shown in thedisplay one line upward.

- The chosen line is inverted.

❏ Increase value to be set.




32 3.5/354-00/03.03E

6 Key ESC

❏ Return to the menu one level higher.

❏ The data which were input last are not changed.

Function Keys with LED

CALMESS

7 CAL / MESS:

Switch over between calibration mode-(CAL-) andmeasuring mode

❏ In the CAL-mode the LED next to it lights up yellow.

AUTO MAN 8 AUTO / MAN :

Switch over between automatic and manual modes

❏ In the MAN-mode the LED next to it lights up yellow.

6.2 Display Elements during Initial Commissioning

Connected to the mains on the device’s initial commissioning and following thestartup-indication the display shows the menu „Sprache/language“:

❏ The word „language“ in the header is displayed in allavailable languages successively at intervals ofapprox. 1s.

Language / L a n g u e . . .

Engl ish

Français

Neder lands

Deutsch

● Starting the device by selecting the respective nationalor operator’s language:

• Select the desired language using the arrow keys UP and DOWN .

- The chosen language is displayed inversely (white letters onblack background).

• Press ENTER to confirm your choice.




333.5/354-00/03.03E

NOTE

The selected language will be stored and will remain the operator’s language when the device is rebooted. If necessary, the operator’s language can be changed in the submenu „language“ of the menu „setup“.

➜ see Section 6.5 Setup

❏ Die Begriffe „Grundeinstellung“ und „Sprache“ lauten in den derzeitrealisierten Sprachen:

Deutsch Hauptmenü Grundeinstellung Sprache

English main menu setup Language

Français Menu principal Paramétrage Langue

Nederlands hoofdmenu basisinstelling taal

Español Menu principal Ajuste básico Idioma

italiano Menu principale programm. fond. lingua

Português Menu principal Posição inicial Língua

❏ After you have selected and confirmed your choice of

the operator’s language by pressing ENTER duringinititial commissioning the display shows „chlorine“as value to be measured.

c h l o r i n e

0 .43 m g / l

- On subsequent startups the display will show themeasured value selected the time before.

❏ On upward violation, downward violation resp. of thechosen measuring range the display shows the lower,upper limit resp. and flashes.

chlorine

0.50 mg/l

5.20 pH

22 °C c

c

➜ ➜ ➜ ➜ ➜ see Section 3.4 Measuring Rangesand Section 6.5.4 Selection of Measuring Ran-ges

Operation



34 3.5/354-00/03.03E

6.2.1 Display Modes

Switching over between display modes 1 and 2:

● Use the "Up" / "Down" keys to switch over betweenthe two display modes:

Display mode 1 with two parameters

ClO2

pH

0.30 mg/l

4.00 pH

Large display of measured values for the two parameters(e.g. ClO

2and pH). The inverted font in the header

displays the two parameters left-justified and right- justified.

The measured value for the left-justified parameter 1 isdisplayed in the 1st line, the measured value for the right- justified parameter 2 is displayed in the 2nd lineunderneath the header. The measured value for apossibly active temperature measurement is not output inthis display mode.

Display mode 2 with two parameters

ClO2

pH

0.30 mg/l

pH c

°C c

4.00

100.0

Large display of measured values for parameter 1, smalldisplay of measured values for parameter 2 and thepossibly active temperature measurement. "c" isdisplayed if the compensation functions are active.

Display with one parameter

ClO2

0.30 mg/l

°C c100.0

Large display of measured values, the selectedparameter is displayed in the header. The measuredvalue for a possibly active temperature measurement isoutput in the 2nd line. "c" is displayed if the compensationfunctions are active.

Operation



353.5/354-00/03.03E

Alarm signals

A parameter-based alarm refers to the flashing parameterin the header. Parameter-independent alarms aredisplayed in the bottom line, but the display does not flashfor this alarm.

If several alarms are present, they can be scrolled using"Up" / "Down" - they are displayed in chronologicalorder. The respectively selected alarm signal is displayedwith inverted font. Switching over is subsequently made tothe last display mode set.

Display mode with active alarms and two parameters

ClO2

pH

4.000.30

alarm line 1

alarm line 2

The parameters are displayed left-justified and right- justified in the header, the measured values of theparameters directly underneath. The measured value fora possibly active temperature measurement and thedisplay "c" if the compensation functions are active aresuppressed.

Display mode with active alarms and one parameter

ClO2

alarm line 1

alarm line 2

0.30 mg/l

Large display of measured values, the selectedparameter is displayed in the header. The measuredvalue for a possibly active temperature measurement andthe display "c" if the compensation functions are active

are suppressed.

Operation



36 3.5/354-00/03.03E

6.3 Software OverviewOperation

––

indication level

Servicecalibration logbook 1 / 2 (the last 10 calibrations)

calling up controller 1 / 2 settingstest of functioning of current outputs

test of functioning of relaystest of functioning of display

ENTER

main menucontroller 1 *):

setting the

parameters

alarm

settings 1

service function

setup

press ENTER to switch to the

corresponding

menu

"controller" is

only available if a

controller hasbeen selected in

the menu "setup"!

!

controller (main menu)relay 1 / 2

continuous

controller- setpoint

- controller parameters

V- controller parameters

- setpoint

alarm 1 / 2

alarm 1 / 2settings:

- alarm values (switching points)

- effective direction

- hysteresis

- alarm delay

dosing time

monitoringmax. dosing time

(at constant dosing flow level of 100%)

V

setup

selecting language

selecting parameter 2selecting measuring cell

selecting measuring rangeconfigation controller 1

switching water sensor on-/offtime setting

code function

display contrast

calling up factory settings

current output :- assignment of currentoutputs to measuring ranges

calling up program version

ENTER

VENTER

selecting parameter 1

configation controller 2

controller 2 *):

setting theparameters

alarm

settings 2



373.5/354-00/03.03E

Operation

press the key

example: controller (setup)

controller- selection:

limit contactinterpulse period controllerpulse frequency controller

- configuration:

effective- /control directionP-/PI-/PID-control

mainmenue

controller

relay 1 / 2

- controller parameter

continuous controller- setpoint- controller parameter

- setpoint

ENTER ENTER

- adaption

- adaption

- controller stop (N.O. / N.C.)

example:parameter 1

chlorine

chlorine dioxide

ozone

peroxide

pH

- temperature compensation for pH on-/off

example: chlorinechlorine measurement with pH mearurement

- pH compensation on-/off

- temperature compensation for chlorine on-/off

chlorine measurement messung without pH- temperature measurement on-/off- temperature compensation on-/off

- temperature measurement on-/off

ENTER

off

example:parameter 2off

CAL/MESS

press the key AUTO/MAN

cal. rights

full rights

Provided that the code numbers for access right have beenset, some menues and submenues as well as the functionsCAL and MAN are protected against unauthorized access.

C

V

run thepreconfigurated

controllers manually

manual operation MAN

Ccalibration of selected

parameters

- chlorine, chlorine dioxid, ozone,peroxide, pH

calibration function CAL

C




38 3.5/354-00/03.03E

6.4 Main Menu

main menu

a l a r m

s e r v i c e

s e tu p

contro l le r

● Switch to the „main menu“ by pressing the keyENTER , or, if necessary by pressing the key ESC several times.

Options in the Main Menu

❏ „controller“ In this submenu a controller can be parameterized.

This option will only be displayed if a type of controllerhas been preselected in the menu“setup“

❏ „alarm“ In this submenu the measured value is comparedwith the permitted value and an alarm is triggeredif necessary.

❏ „service“ Diagnosis-submenu, the measured values as well asthe last 10 alterations of calibration data can beviewed. In this mode values can not be altered.

If measuring cell 314-9xx is selected the data of thewater sensor can be viewed.

o „setup“ In this submenu the settings for language,parameters, measuring ranges, controllers etc. canbe adjusted.

Selecting the functions „calibration“ and „manual operation“ (see keys CAL/ MESS and AUTO/MAN to the right of the display):

❏ Calibration Press the key CAL/MESS to switch to the calibrationmenu“CAL“ (yellow LED lights up).

❏ Man. operation Press the key AUTO/MAN to switch over to manualoperation“MAN“ (yellow LED lights up).

NOTE

Switching over to manual operation „MAN“ is only possible if a controller type has been preselected in the menu „setup“.The functions „CAL“ and „MAN“ can only be accessed by persons having cal rights or full rights.

Operation



393.5/354-00/03.03E

6.5 Setup

All standard settings of the device can be defined in the "Setup" menu. During the firstcommissioning basic functions are configured which later on have to be altered veryseldom or even not at all.

Access to the "Setup" menu with the code set is only possible with full privileges.

➜ ➜ ➜ ➜ ➜ see Section 6.5.8 code function

● Enter code-No.

6.5.1 Selection of Measured Values Chlorine, Chlorine Dioxide, Ozone

and pH

Selection of Measured Value in the Menu "Parameter 1" and "Parameter 2"

setup

parameter 1

off

chlorine

chlorine dioxide

ozonperoxide

temp.-meas

on

off

temp.-comp.

on

off

parameter 2

off

pH

temp.-meas

on

off

pH-comp. chlorine *

on

off

* pH-comp. chlorine

is only available if chlorine and pH

have been selected as parameters

temp.-comp.

on

off

● Select the line „Parameter 1“ / "Parameter 2" using the keys UP/DOWN andpress ENTER to switch to the corresponding menu.

● Use UP/DOWN to select the measured variable (parameter), and confirm withENTER .

● Use UP/DOWN to select further settings, and confirm with ENTER .

Operation



40 3.5/354-00/03.03E

6.5.2 pH- and Temperature Compensation

pH-Compensation with Chlorine Measurement

❏ The dissociation of hypochlorous acid (HOCl) into the hypochlorit-anion(OCl–) leads to a loss of slope (loss of sensitivity) of the sensor in chlorinemeasurement.

- Using a mathematical compensation function this loss of sensitivity canbe eliminated.

Temperature Compensation

❏ Using a compensation function, the influence of temperature on themeasurement can be eliminated mathematically.

Control Field for pH-Value, pH-Compensation, Temperature and TemperatureCompensation in the Display measured value

● Press ESC once or twice to change over to the displaymeasured value.(figure on the left: chlorine measurement with pH- andtemperature compensation)

chlorine pH

0.43 mg/l

5.20 pH

22 °C c

c ➜ ➜ ➜ ➜ ➜ see Section 6.2 Display Elements during InitialCommissioning

and Section 6.6.3 Indication of measured valuewith controller-control field

- In addition to the current measured value, the current pH-valueand the temperature of the sample water are indicated as well.

- With activated pH- compensation, temperature compensationresp., the letter „c“ for „compensation“ is displayed to the right ofthe respective line.

6.5.3 Selection of Measuring Cell

NOTE

The submenu „measuring cell“ is shown only if the

measured values chlorine, chlorine dioxide, ozone or peroxide were selected during the parameterization.

Here the measuring cell that corresponds to the selected measured value can beselected:

❏ 314-3xx/6xx/9xx with chlorine, chlorine dioxide or ozone

❏ 314-3xx/6xx with peroxide

Operation



413.5/354-00/03.03E

Monitoring the Cleaning Motor (measuring cells 314-3xx)

After having chosen measuringcell type 314-3xx press ENTER to get to thesubmenu „cleaning motor“:

● Switch the monitoring of the cleaning motor on/off.

Measuring cell Messzelle 314-9xx selected

A black bar on the display indicates the actual data ofthe water sensor (figure on the left: chlorinemeasurementwith 314-9xx).

chlorine

0.43 mg/l➜ ➜ ➜ ➜ ➜ see Technical Information potentiostatic measuring

cell 314-900, compact measuring systems 314-912 /-922 /-914 /-915

6.5.4 Setting the Measuring Ranges for Chlorine, Chlorine Dioxide, Ozone,

Peroxide and pH

In the menu „measuring ranges“ the corresponding measuring ranges are assigned tothe measured values which have been selected in the menu „parameters“.

❏ In the menu „measuring ranges“ the following options are available:

- Standard measuring ranges and

- optional settings "Other"➜ ➜ ➜ ➜ ➜ see Section 3.4 Measuring ranges

❏

The measuring ranges for temperature can be defined in °C (Celsius) or in °F(Fahrenheit).

NOTE

The submenu „temperature“ will be shown only if the temperature measurement was switched on in the menu „parameter“.

6.5.5 Controller Parameters 1 / 2

See Section 6.6 Selection, Configuration and Parameterization of the Controller inorder to adjust the controllers.

Operation



42 3.5/354-00/03.03E

6.5.6 Water Sensor

In the menu „wat. def. sensor“ the water sensor can be switched on/off.

❏ With the measuring cells 314-3xx/9xx and 314-6xx different types ofsensors are employed:

314-3xx/9xx : Namur switch

314-6xx: reed contact

❏ In the event of sample-water deficiency:

- the malfunction-indicating relay will be activated, the alarmmessage“fault wat.def.sensor“ will be triggered,

- with devices with control functions, the actuators will be switched to

„passive“, closed resp.

Caution

If measuring cell 314-9xx is selected the water sensor has to be switched ON!

6.5.7 Setting the Current Time (Date/Time/Summer Time)

● Switch from the menu „setup“ to the menu „date/time“.

● Set the device to the current time in the menu „time set“ in the formathh.mm.ss:

01: 18 : 40 pm

t ime se t

t ime

• Press ENTER to switch to the next number field.

The number field which is currently activatedflashes.

• Alter the settings by pressing the keys UP , DOWN resp.

- Pressing the keys continuously makes theadjustment dynamically faster.

● Set the device to the current date in the menu „date“ in the format mm.dd.yyyyanalogous to the adjustment of the time. (wenn Betriebssprache nicht Eng-lisch: DatumsFormat dd.mm.yyyy) The corresponding day of the week(Mo...Su) will be displayed automatically.

● If necessary, enter beginning and end of the summer time, the kind of timeshift and the number of hours of the time shift.

Operation



433.5/354-00/03.03E

6.5.8 Code Function

The code function is designed to protect the device from unauthorized access.

Entering the four-digit code number and changing it

code: 0000

o l d c o d e

ca l r ight ● Select the line „code function“ from the menu"setup“, using the keys UP or DOWN and pressENTER to switch to the corresponding menu.

- There are two types of access rights:

CAL right Only allows access to the calibration menu „CAL“ and tomanual operation (menu „MAN“). Allows the owner ofthese rights:to alter calibration datato operate control relays manually

full right The owner of full rights has full acces to all settingsincl. calibration dataThe owner of full rights may:alter calibration dataalter setupparameterize the controlleralter alarm settingsrun the device manually

● Select the desired type of access rights and press ENTER to get to thecorresponding menu.

● If there is one, confirm the old code number first(on first use confirm code 0000):

• Select „change“.

• Enter the old code in the submenu (see comment line at the bottom of thedisplay), using the keys UP or DOWN , press ENTER to confirm your entryand switch to the query „new code“ (see comment line at the bottom of thedisplay).

• Enter a new four-digit code number using the keys UP or DOWN . PressENTER to confirm your entry.

• Repeat to confirm: set new four-digit code number using UP orDOWN , press ENTER to confirm.

● If you want to cancel access rights, delete the corresponding code number inthe submenu „delete“.

Operation



44 3.5/354-00/03.03E

❏ Entering a valid four-digit code number gives the operator access to thecorresponding functions for a limited time of 60 min.

❏ If no code was entered before, the respective menu can be accessed withoutrestrictions. The code No. 0000 will not be displayed/ the operator will not beasked to enter it.

NOTE

If a wrong code is entered - Access to the corresponding menus will be denied,- An error message will be triggered (length 5 s),

- The device will return to the main menu.

RESET-Function

❏ Entering the code No. „1998“ deletes all previously entered code numbers.

❏ All prior access codes will be deleted and reseted on „0000“.

6.5.9 Adjusting Display Contrast

In the menu „Display“ the contrast of the display can be adjusted.

● Switch from the menu „setup“ to the menu „display“ using the keys UP or

DOWN ,and press ENTER to confirm your choice.

Operation



453.5/354-00/03.03E

6.5.10 Factory Settings

Entering the ALLDOS works code 6742 resets the amplifier to factory settings.

General Factory Settings

Language**) Device is waiting for language input: the languages„Deutsch/English/Français....“ are indicated alternatly

Summer time off

Code numbers 0000 cal right0000 full rights

Current outputs 1-4 0–20 mA

Dosing monitoring On (value 60 minutes)

Parameter 1 Chlorine

Parameter 2 Off

**) For first calibration, then default value = last setting

Default values for parameter group 1

Cl2

ClO2

O3

H2O

2

Measuring range [mg/l] 0.00-2.00 0.00-1.00 0.00-1.00 0-100

Measuring cell 314-9xx 314-9xx 314-9xx 314-9xx

Temp.measuring off off off offwater sensor on on on on

Default values for parameter group 2

pH

Measuring range 0.00 -14.00

Temp.measuring off

water sensor off

Operation



46 3.5/354-00/03.03E

6.5.11 Current Outputs

In the menu „current output“ the operator can assign the preselected values to thecurrent outputs and then assign the current loops to the preselected measuringranges.

❏ In the menu „current output“ the preselected parameters are listed in thefollowing order:

- Output 1: Parameter group 1: chlorine,chlorine dioxide, ozone, hydrogenand peroxidec u r r e n t o u tp u t

c h l o r i n e

p Hte m p e r a tu r e

- Output 2: Parameter group 2: pH

- Output 3: Temperature or continuouscontroller for parameters fromgroup 2

- Output 4: Continuous controller forparameters from group 1

Assignment of the Current Outputs to the Measuring Range (Example ChlorineMeasurement):

❏ There are two standard ranges,“0-20 mA“ and „4-20mA“ which can beassigned to the current outputs.They are assigned to the measuring rangelinearly.

❏ In addition, the start-of-scale and full-scale values can be freely-defined within0 to 20 mA in an additional optional setting for the current outputs 1 and 2 aswell as for current output 3 with temperature measurements:

0 - 20 m A

4-20 mA

ch lo r in e

o t h ers• In the corresponding submenu (e.g. chlorine),select the "Other" line using UP/DOWN andconfirm with ENTER .

• In the subsequent display "0.00 mg/l" , enter thestart-of-scale value of the range using UP , andconfirm with ENTER .

- The scan "= 0 mA" is additionallydisplayed in the same line

c u r r e n t o u tp u t

c h l o r i n e

pH

tempera ture

• Enter the associated start-of-scale current valueusing UP . Confirm with ENTER .

- An additional l ine is displayed with the scanfor the full-scale value of the range"20.00 mg/l"

Operation



473.5/354-00/03.03E

0.20 mg/l = 0 mA

15.00 mg/l = 20 mA

ch lo r in e • Enter the full-scale value of the range usingDOWN , and confirm with ENTER .

- The scan "= 20 mA" is additionallydisplayed in the same line.

• Enter the associated full-scale current value usingDOWN . Confirm with ENTER , and then return tothe "Current output" menu.

6.5.12 Program Version

In the event of any problems that make it necessary to contact our service

department, the menu „program version“ enables the operator to easily identify thesoftware components of his actual device.

v1.11.1 20030304

CONEX DUO

program version❏ version e.g. v0.20.1

❏ last update JJJJMMTT

Operation



48 3.5/354-00/03.03E

6.6 Selection, Configuration and Parameterization of theController

It takes two steps to set up the controller:

❏ first: selection and configuration of the controller type in the menu „setup“,submenu „controller“

❏ then: parameterization of the selected controller type in the main menu,submenu „controller“

6.6.1 Selection and Configuration of the Controller

setup

controller

parameter 1

setpoint contrlctrl. charact.

P

PI

PID

setpt controller

off

limit contact

interpulse ctrl.

pulse freq. ctrl

cont. controller

ctrl. direction

downward control

upward control

Limit contact

downward viol.

upward violation

controller

parameter 2

parameter 2 as controller

parameter 1

● In the "Setup" menu, select the "Controller parameter 1" or "Controllerparameter 2" line using the UP/DOWN keys, and select the menu with thesame name using ENTER .

Operation



493.5/354-00/03.03E

Selection and configuration of the setpoint controller

● Mark the "Setpoint controller" line using UP/DOWN , and select with ENTER .

● Select the controller using UP/DOWN as

- off,

- limit monitor,

- interpulse controller (two-position controller),

- pulse frequency controller (two-position controller) or

- continuous controller

and confirm using ENTER .

If "Limit monitor" is selected:

● Use UP/DOWN to select the switching direction as

- downward violation or

- upward violation


If "Interpulse controller", "Pulse frequency controller" or "Continuous controller" isselected:

● Use UP/DOWN to select the control direction as

- downward control (switches with upward violation of setpoint) or

- upward control (switches with downward violation of setpoint)


● Use UP/DOWN to select the control response as

- P (proportional controller),

- PI (proportional-plus-integral controller) or

- PID (proportional-plus-integral-plus-derivative controller)


Operation



50 3.5/354-00/03.03E

Operation

limithysteresis

stop

settings in the setup menu

Setpoint controller

pulse freq. contrl

Setpoint controller

continuous contrlSetpoint controller

Limit monitor

Setpoint controller

interpulse contrl

set pointprop. band xp

reset time TN **

deriv. action TV *

Pulse + pause time

Min. ON time

constant load

max. dosing flow

adaption **

stop


reset time TN **

deriv. action TV *

max. frequency

constant load

max. dosing flow

adaption **

stop


reset time TN **

deriv. action TV *

constant load

max. dosing flow

adaption **

stop

* only with PID

** only with PI, PID

controller

parameter 1 / 2

main menu

6.6.2 Setting the Controller Parameters

● Select controller in the menu „setup“ and configure it.

➜ ➜ ➜ ➜ ➜ see Section 6.5.5 Controller Parameters 1 / 2

● Select the line „controller“ from the main menu, using the keys UP/DOWN andpress ENTER to switch to the menu „controller“.

➜ ➜ ➜ ➜ ➜ see Section 6.4 main menu

NOTE

The option „controller“ in the main menu is only available if a controller has been selected in the menu „setup“!

❏ The options available in the submenu „controller“ (main menu) correspond tothe configuration made in the menu „setup“.

● Use the keys UP/DOWN to alter internal setpoints within the selectedmeasuring range

➜ ➜ ➜ ➜ ➜ see Section 3.4 Measuring Ranges

● Select displayed controller parameters using the keys UP/DOWN , pressENTER to switch to the respective submenu and use UP/DOWN to adjust thesetpoints to your needs within the permitted ranges.

➜ ➜ ➜ ➜ ➜ see Section 3.3 Control Functions

settings for setpoint controllers:



513.5/354-00/03.03E

Operation6.6.3 Controller Control Fields on the Display

● Press ESC once or twice to switch to the display „measured value“(fig.: chlorine measurement with pH- and temperature compensation).

➜ ➜ ➜ ➜ ➜ see Section 6.2 Display Elements during Initial Commissioningand Section 6.2.1 Display Modes

1continuous controller

output

relay 1 or 2

chlorine

0.43

1

5.20 pH c22 °C c

mg/l

controller control fields

control fieldsfor pH or temperature :pH- meas. value, temp.- meas. value"c" = compensation ON

- The control fields for relays 1 and 2 appear as follows for preconfiguredlimit monitors / two-position controllers:

Unfilled field for relay "OFF": 1

Filled field (inverted font) for relay "ON": 1 .

- The control field for the continuous controller is empty, partially filled orcompletely filled depending on the set dosing rate - and whenpreconfigured accordingly - and the filling of the bar always refers to 100%dosing rate.

e.g. at 0% at 50% and at 100% .



52 3.5/354-00/03.03E

Operation6.6.4 Adaptation

An adaptation can be started to simplify the setting of the controller parameters.

❏ The adaptation is only available for PI- and PID-controllers.

chlorine

0.43mg/l

adaptation

● Start adaptation in menu „controller“ (main menu)under „adaptation“ by pressing „start“.

❏ Return to display „measured value“ automatically. Ablack bar on the display indicates the adaptationprocess (figure on the left: chlorine measurement withadaptation continuous controller).

The LED MAN/AUTO flashes during the wholeadaptation. A progress bar shows the advancement ofthe adaptation.

- The configured controllers can only be adapted seperately.- On upward control the measuring value has to be more than 20%

below the set point- On downward control the measuring value has to be more than 20%

above the set point.

In case of a fault the message „Starting conditions false“ is shown directlyafter the start.

❏ The message „Adaptation successful“ is shown after ending the adaptation.Press Enter or ESC to quit. The determined controller settings will beautomatically adaptet by the parameterization of the controller. They aredisplayed in the adaptation menu under „Adapt. result“.

❏ If the adaptation wasn´t successful the message „Adaptation failed“ is shown.Press ENTER or ESC to quit.The adaptation may be aborted,

- if an error message was shown during the adaptation

- if the controller is switched on manual operation

- if the stand down time was more than 1 h.

- if the total measuring time was more than 2 h.

NOTE

With selected temperature-/pH-measurement the temperature value, pH-value and their compensations will not be displayed during the adaptation.



533.5/354-00/03.03E

Operation6.7 Menu „alarm“

❏ With the help of the alarm function the measured value can be monitored andcompared with the permitted range.

❏ If the measured value violates the limits of the measuring range, an alarm willbe triggered.

- The alarm relay is switched on after the preselected alarm delay time.

- When the cause for the alarm has been removed, the relay switches over(without delay).

Menu „alarm“ in main menu


main menu

alarm 1

alarm value

alarm value 2

(switch. point 2)

hysteresis

alarm value 1

(switch. point 1)

alarm off

alarm on

alarm delay

downward

violation

upwardviolation

downward

violation

upward

violation

alarm 2

further as with alarm 1



54 3.5/354-00/03.03E

● Select the line „alarm“ in the „main menu“, using the keys UP or DOWN .Press ENTER to switch to the menu „alarm“. Two functions are availablethere:

a la rm va lues

d o s . t i m e m o n i t .

a la rm - alarm values: If the measured value leaves thepermitted range, the alarm relay will be activatedand an alarm message will be triggered.The red alarm-LED starts flashing.

- dos. time monitoring: If the dosing flow constantlyremains at 100% during a preselected maximumdosing time, the alarm relay will be activated andan alarm message will be triggered.

The red alarm-LED starts flashing.

6.7.1 Setting Alarm Values

● Select the "Alarm values" line using UP or DOWN , and select the "Alarmvalues" on/off switching menu using ENTER .

● Confirm "Alarm on" line using ENTER , and select the "Alarm values" selectionmenu.

Setting the Upper and the Lower Switching Point (limits)

● Select the line „alarm value 1“, „alarm value 2“ resp.

Press ENTER to confirm your choice and to switch tothe respective menu: 0 .00 mg/ l

s w i tc h i n g p t . 1

a la rm va lue 1

• Set switching points between 0 and the upper endof the measuring range defined earlier, using thekeys UP and DOWN (in unit und resolution of themeasured value).

➜ see Section 6.5.4 Setting the Measuring Ran-ges

● Press ENTER to switch to the menu „eff. direction“.

- Options: Alarm message in the event of upward/downward violation ofthe chosen switching point

• Select the respective line, using the keys UP or DOWN .

- Press ENTER to return to the menu „alarm values“ automatically.

Operation



553.5/354-00/03.03E

0 .00 mg/ l

hys te res is

a la rm va lues

● Select the line „hysteresis“ in the menu „alarm values“and press ENTER to switch to the correspondingsubmenu.

• Set hysteresis to a value between 0 and half of themeasuring range, using the keys UP and DOWN .

- The hysteresis makes sure that the relays switch more smoothly in theevent of upward, downward violation resp. of the limits.

● Press ENTER to return to the menu „alarm values“ .

0 s e c .

a la rm de lay

a la rm va lues

● Select the line „alarm delay“ in the menu „alarm

values“ and press ENTER to the correspondingsubmenu.

• Set alarm delay to a value between 0 and 300seconds, using the keys UP and DOWN .

6.7.2 Dosing Time Monitoring

This function can be used to monitor the dosing process. If the dosing flow remains ata constant level of 100% during a preselected period, an alarm message will betriggered.

● Select the line“dos.time monit.“ in the menu „alarm“ and press ENTER toswitch to the corresponding submenu.

❏ In the menu „dos.time monit.“ the monitoring functioncan be switched „on“, „off“ resp.

10 min .

max. dosing t ime

dos. t ime moni t .

- If „off“ has been selected, the device returns to themenu „alarm“.

- If „on“ has been selected, another submenu„dos.time monit.“ will be displayed.

• Set the maximum dosing time to a value between0 and 600 minutes, using the keys UP or DOWN .

Operation



56 3.5/354-00/03.03E

6.8 Checking the Settings in the Menu „service“

In the menu „service“ the operator can check all important settings and test thefunctions of the device in the event of problems that make service necessary.

NOTE

In the menu „service“ calibration data and controller settings can not be altered. Therefore it can be accessed without access code.

● Select the line „service“ in the „main menu“ and press ENTER to switch to the

corresponding menu.

Operation



573.5/354-00/03.03E

Example: Chlorine Measurement

test display

main menu

service

chlorine

- cal date

- slope

- cal no (1.– 10. data set)Cal Data /

LogBook

measured

- cal temp(1)

- cal time

- cal pH(2)

actual cell current in µA/

actual measured value in mg/l

controller 2(3)

controller parameters

test current

test relay

current outputs 1–4

relays 1/2 on/off

values 0(4) m/10mA / 20 mA

on/off

water-

sensor

cal value in 1/min

actual measured value in 1/min(4)

value

(5)

controller 1(3)

controller parameters

(1) „cal temperature“ will only be displayed, if temperature measurement,temperature compensation resp. have been switched „on“ in the setup.

(2) „cal pH-value“ will only be indicated, if pH-measurement, pH-compensationresp. have been switched „on“ in the setup.

(3) „controller“ will only be displayed, if a controller has been selected andconfigured in the setup and in the „main menu“.

(4) „water sensor“ will only be displayed, if measuring cell 314-9xx has beenselected in the setup.

(5) "Cal Data / Log" is only displayed if a calibration has already been made.

Operation



58 3.5/354-00/03.03E

❏ In the menu „service“ the following items are listed:

- Parameter : displaying data of the previous10 calibrations

chlor ine

te s t c u r r e n t

serv ice

te s t r e l a i s

- Controller: checking controller settings

- Test current: testing the functioning of thecurrent outputs

- Test relay: testing the functioning of the relays

- Test display: testing the functioning of the display

"Parameter": Logbook Registration of Calibration Data

❏The calibration data of all activated measuring values are registered inchronological order by a logbook function.

Example: With pH-measurement the logbook lists the following data:

- calibration number (cal number) with date/time

- slope (Sensitivity of the electrode)

- asymmetric potential of the electrode

- temperature of the buffer solution used cal temperature)

❏ Under measured value the following data are displayed:

- current measured value

- the current cell voltage, cell current resp.

❏ Under water sensor the following data are displayed:

- Speed of water sensor during last calibration

- actual speed of the water sensor

„controller“ (Checking Controller Settings)

● Select UP/DOWN depending on the controller, and select the correspondingmenu using ENTER .

- In the first line the configured type of controller is displayed and in the sub-sequent lines the current controller settings are listed.

„test current“ (Testing the Functioning of the Current Outputs)

● Select the current output to be tested, using the keys UP/DOWN and press

ENTER to switch to the corresponding menu.❏ Depending on the configuration of the current loops, the current outputs can

be switched „on“ with the following current values and the current value canbe output to the system:

- Test currents of 0, 10, 20 mA with preselected standard range 0-20 mA,

- Test currents of 4, 12, 20 mA with preselected standard range 4-20 mA,with freely adjusted current loops resp.

Operation



593.5/354-00/03.03E

● Select the current values, using the keys UP/DOWN

- When a line is selected, the state of the current output with thecorresponding value is automatically set to „on“.

- As soon as another line is selected, the previous current value isautomatically switched „off“ and the new current value is set to „on“.

„test relay“ (Testing the Functioning of the Relays)

● Select the relay to be tested, using the keys UP/DOWN and press ENTER toswitch it „on“, „off“ resp.

- If either of the lines „relay 1“, „relay 2“ or "alarm" has been selected, therelay that was the last one activated before entering the test menu will beswitched off. Considering the current alarm values, controller values resp.,

the relay will be switched on again when the test menu is left,

„test display“ (Testing the Functioning of the Display)

❏ if the display turns competely dark: Function o.k.

❏ if the display stays partly bright: Display faulty

● Press ENTER to leave the test menu .

6.9 Calibration

● Press the key MESS/CAL to switch to the calibration menu.

- The LED next to the key MESS/CAL lights up.

● Depending on the access rights situation, you may have to enter your four-digitcode number, using the keys UP/DOWN . Confirm using ENTER .

● Select parameter for the calibration.

❏ In order to avoid an overdosing, the controllers are switched off and the finalcontrol elements are closed.

6.9.1 Peculiarities with the Calibration for Chlorine with pH-Compensation

CAUTION

pH-calibration is of prime importance , since during the calibration of the chlorine value the device uses the already calibrated measured value for pH as a reference value.Therefore calibrate pH-value first! Only then calibrate chlorine value!

Operation



60 3.5/354-00/03.03E

6.9.2 Calibrating the pH-Value

buffer 1/2

pHcal. meas.

value

cal resultslope/

asymmetry pot.

1-100 dayscal cycle

"CAL / MESS "

automaticreading-in of - measuring water

temperature- measuring signaland automaticcalibration

on

cal-result:

slope/

asymmetry pot.

DIN/NIST

ALLDOS

others

temperature

of buffer

solution

❏ The pH-calibration is carried out as a two-point calibration.

pH

cal cyc le

cal resu l t

ca l . meas. va lue

● Press the key MESS/CAL to switch to the calibrationfunction. Select the line „pH“ and press ENTER toswitch to the calibration menu „pH“.

● Select „cal meas. value“ and press ENTER to switchto the corresponding menu.

Selecting Buffer Types and Buffer Values, Reading-in Buffer Values andCalibrating

❏ Three optional buffer types are available:

- ALLDOS: buffer values pH 4.01, 7.00, 9.18

A L L D O SD I N / N I S T

o th e r s

b u f fe r

- DIN/NIST buffer values pH 4.01, 6.86, 9.18- „others“: lower and upper buffer value can be

freely adjusted (difference at least 1 pH) within thepreconfigured pH-value measuring range (menu„setup“)

• Select a buffer type, using the keys UP/DOWN .

Operation



613.5/354-00/03.03E

t e m p e r a tu r e

25 °C

❏ Press ENTER to jump to the menu „temperature“automatically.

• Enter temperature of the buffer solution used.

❏ Press ENTER to jump to the menu „buffer value 1“automatically.

4 .01 pH

7 .00 pH

9 .18 pH

b u f fe r v a l u e 1

• elect one of the three optional buffer values offeredfor the buffer solutions ALLDOS or DIN/NIST.

• Fill buffer 1 from the storage bottle into a cleanvessel .

• Dip electrode into buffer solution.

❏ Select ENTER to start the automatic read function AUTO READ (reading in ofmeasured signal) and the calibration.

- The display shows the message „please wait“ during the calibration.

- The automatic reading function during pH-calibration has the effectthatthe correct electrode signal for the buffer value is read-in only when themeasuring signal remains stable during a defined interval.

• Dispose of first buffer solution (i.e. do not return it to the storagebottle!), rinse electrode with water.

❏ Press ENTER to jump to the menu „buffer value 2“automatically.

7 .00 pH

9 .18 pH

b u f fe r v a l u e 2

- Here you can only choose between the tworemaining buffer values.

• Fill buffer solution 2 from the respective storagebottle into a clean vessel/bowel.

• Dip electrode into the second buffer solution.

❏ Press ENTER to start the automatic reading function and to start thecalibration.

● Then dispose of buffer solution and rinse electrode with water.

❏Immediately after the calibration its result is displayedautomatically:

- 6 0 . 1 7 m V / p H

a s y m m e t r y p o t .

C A L D A T A p H

s l o p e

1 9 m V

- Sensor slope in mV/pH,

- Asymmetry potential of the electrode in mV.

Operation



62 3.5/354-00/03.03E

Error Messages while the Voltage Signal of the pH-Electrode is read-in

The calibration may be aborted,

❏ if the electrode is faulty or a wrong buffer has been used.

- The message“fault of electrode/buffer“ will be displayed,

❏ if the electrode does not come to a stable measuring signal in a defined

period of 120 s.

- The message „calibration time exceeded“ will be displayed.

❏ if the result of the plausibility testing of the pH calibration data is:

Upward/downward violation of the slope range of -50 to -62 mV/pH:

- The message „faulty slope“ will be displayed.

❏ ownward/upward violation of the precision/exactness range from

-60 to +60 mV:

- The message „faulty asymmetry potential“ is indicated.

The calibration process will be aborted in all four cases.

❏ Press ENTER to return to the menu „calibration“ automatically.

❏ In the event of an abortion the old calibration date will not be overwritten!

Cal interval

❏ Following selection of "Cal interval" in the "Measured variable" menu, acountdown function is started which triggers the alarm signal "Calibratesensor" following expiry of a defined time interval of 1-100 days.

Cal result

❏ The result of the current (last) calibration can be displayed at any time usingthe menu item "Cal result".

Operation



633.5/354-00/03.03E

6.9.3 Calibration for the Parameters Chlorine, Chlorine Dioxide, Peroxide

and Ozone

chlorine,

chlorine dioxide,

peroxide,

ozone

cal result

cal. meas.

value

reference

value

slope

cal cycle 0–100 days

automatic reading-in of

the cell signal and

calibration

"CAL / MESS "

on

cal-result:

slope

❏ After having switched to the calibration function bypressing the key CAL , the display is in the mode"measured value“ and indicates the current measuredvalue.

c h l o r i n e

c a l . c y c l e

c a l . r e s u l t

ca l . meas . va lue

● Press ENTER to switch to the calibration menu (firstline reads „chlorine“, for instance“).

● Select the line „cal meas. value“ and press ENTER toswitch to the corresponding menu.

ca l . meas . va lue

0 . 4 5 m g / l

I -cel l 10.4 µA

❏ In the bottom line the entry field (value in mg/l) for thereference value determined photometricly oranalytically) and the current cell current, electrodecurrent resp. (in µA) are displayed.

● Enter reference value (e.g. determined photometriclywith Allcon Test).

34 .67 µA/ppm

CALDATA chlor ine

s l o p e

● Press ENTER to start calibration.

- An automatic read function reads in the sensordata and the calibration is carried out.

- The slope (sensitivity) of the sensor is calculated.❏ Immediately after calibration the result of the

calibration is indicated automatically (first line „cal-meas. value“) is indicated:

- The slope of the sensor in µA/ppm is displayed.

Operation



64 3.5/354-00/03.03E

6.10 Manual Operation

The manual operation mode is used to switch off the automatic control and to run thecontrol relays manually

NOTE

Manual operation is only possible after a controller has been configured.Manual operation can only be accessed with cal right or with full rights.

● Press the key AUTO/MAN .• Depending on the access rights situation you may have to enter yourfour-digit code number, using the keys UP/DOWN .

- The LED next to the key AUTO/MAN lights up.

❏ The display reads „controller stop“: All configuredcontrollers are switched off.

m a n u a l o p e r a t i o n

c o n t r o l l e r s to p

- With preconfigured two-position- and continuouscontrollers the manipulated variable is set to 0.

- With preconfigured limit contacts the corresponding relay is switchedoff.

● Press the key AUTO/MAN to return to automatic operation.

- The LED next to the key goes out.m a n u a l o p e r a t i o n

c o n t r o l l e r ac t ive

- The message „controllers active“ is shown on thedisplay for 5 s.

- Then the device automatically returns to the menufrom which the manual operation was started.

NOTE

Every time the manual-operation mode is entered, every single controller type must be activated again !

Operation



653.5/354-00/03.03E

6.10.1 Manual Operation with Preconfigured Two-position- and Continuous

Controllers

"AUTO / MAN "

controller

stoprelay 1

manual

operation

dosing flow

0–100%relay 2

dosing flow

0–100%

❏ With preconfigured two-position controllers the relay outputs 1 and 2 as well asthe output „continuous controller“ can be separately run manually.

❏ By choosing the respective relay output the dosing flow of the pump/pumpscan be changed.

❏ After having switched to manual operation themessage „controller stop“ is displayed for 5 s.

m a n u a l o p e r a t i o n

c o n t r o l l e r s to p

- All controllers are switched off.

- The final control elements are closed (set to 0).

❏ Then the device automatically switches to the mode „display measured value“(first line: „manual operation“)

- The controller control display is output on the rightside of the screen. Either control field 1 is presentfor relay 1, or a field for the continuous controller.

manual operation

0.01 mg/l

1

5.20 pH c22 °C c

➜ ➜ ➜ ➜ ➜ see Section 6.6.3 Controller Control Fields onthe Display

- Since by switching to manual operation all controllers were switchedoff, none of the control fields is filled (there are no inverted areas)

Operation



66 3.5/354-00/03.03E

● Press ENTER to switch to the subsequent menu. Herethese options are available:

manual operation

controller 2

controller 1 - Relay output 1

- Relay output 2

re lay 1

d o s i n g f l o w

0 %

● Select relay output 1, using the keys UP/DOWN .Press ENTER to switch to the corresponding menu.

• Set the desired dosing rate using UP/DOWN .

● For relay output 2 and the output continuous controller proceed analogously torelay output 1.

● Press ENTER to start the controller at the preselected dosing flow.

- The display shows the controller-control display in its dependence on thepreselected dosing flows. ➜ ➜ ➜ ➜ ➜ see Section 6.6.3 Controller Control Fieldson the Display

6.10.2 Manual Operation with Preconfigured Limit Contact / Continuous

Controller

"AUTO / MAN "

controller

stoprelay 1

manual

operation

on

off

dosing flow

0–100%relay 2

Manual operation with preconfigured limit contacts is mostly analogous to manualoperation with two-position- and continuous controllers

The difference: When the respective relay output is selected, the relay can beswitched „on“, „off“ resp.

● Press ENTER to start the controller.

- The display shows the controllor-control display in its depencence on theswitching state of the relay, on the preselected dosing flow with continuouscontrol resp. ➜ ➜ ➜ ➜ ➜ see Section 6.6.3 Controller Control Fields on theDisplay

Operation



673.5/354-00/03.03E

7 Troubleshooting

NOTE

Faults during the measurement: Refer to the Operation Manual of electrode, measuring cell resp.!

Fault Cause Remedy

No display following startup - No supply voltage. • Connect supply voltage.

With ph-Measurement:Display permanently indicates pHapprox.7.

With Measurement of oxidizers:Display permanently indicates zero.

- Short-circuit in cable betweenmeasuring cell and instrumentamplifier, moisture in connectors.

• Check connection cable andeliminate short-circuit, eliminatemoisture.

Display permanently at full-scale value. - Open-circuit in cable betweenmeasuring cell and instrumentamplifier.

• Check connection cable and makeconnection.

Measured-value display unsteady. - Interferences on cable fromelectrode/measuring cell.

- With pH-measurement:air in sample water flow.

- With pH-measurement:sample water flow interrupted.

- Cable between electrode/measuringcell and instrument amplifier broken.

- Sensor/elect rode faulty.

• Check that the screen is properlyconnected.

• Check sample water supply system(pipes...) and make changes if necessary.

• Check sample water supply system(pipes...) and make changes if necessary

• Check connection cable and makeconnection.

• Replace sensor/electrode.

Troubleshooting



68 3.5/354-00/03.03E

Fault Cause Remedy

With measurement of oxidizers:Insufficient sensitivity of measuring cell.

- Measuring cell contaminated or passivated by deposits.

• Disassemble measuring cell andclean surface of electrode.

With pH-measurement:Measured-value display reacts extremelyslowly.

- Electrode aged.

- Electrode dirty.

• Replace electrode.

• Clean electrode.

With pH-measurement:Error message during calibration.

- Wrong buffer solution used.

- Electrode aged.

- Electrode dirty.

• Use correct buffer solution.

• Replace electrode.

• Clean electrode.

Device cannot be set. - Incorrect code set (device protectedagainst adjustment).

see chap. 8 „Code Function“

Faulty control. - Device is incorrectly parameterized. • Check settings and match to localconditions.

• If necessary reset device to factorysettings.

Troubleshooting



693.5/354-00/03.03E

Maintenance

8 Maintenance

The device is maintenance-free.

Repairs can only be carried out in the factory by autorized specialists.

You can contact the ALLDOS service department by fax or via our hotline:

Fax No.: ++49 (0) 7240 61-211 - Reference „Quality-Service“Hotline: ++49 (0) 7240 61-226.



70 3.5/354-00/03.03E



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conex manual

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