avl microifem piezomodule

Application Software IndiSignal from v2.8Product Guide

MICROIFEM

PIEZO MODULE 4P3E/F/G/H

June 2008AT2626E, Rev. 01

The contents of this document may not be reproduced in any form or communicated to any third party without the prior written consent of AVL. While every effort is made to ensure its correctness, AVL assumes no responsibility neither for errors and omissions which may occur in this document nor for damage caused by them.

All mentioned trademarks or registered trademarks are owned by their respective owners.

Printed in Austria at AVL.All rights reserved.

Copyright 2008 by AVL List GmbH, Graz - Austria

DIN EN 62079: 11.2001Certificate n. Z2D 06 12 10049 007

Warnings and Safety Instructions 3Warnings and Safety Instructions

This manual contains important warnings and safety instructions, which must be observed by the user.The device is intended only for an exactly defined use which is described in the manual. The manual also explains the essential prerequisites for the application and operation of the device as well as the safety measures to ensure smooth operation. AVL can offer no warranty nor accept any liability if the device is used in applications other than those described and if the necessary requirements are not met and the safety instructions not followed.The device may only be used and operated by personnel, who, due to their qual-ifications, are capable of observing the necessary safety measures during use and operation.Any accessories and equipment used with the device must be supplied or approved by AVL. The operating principle of this device is such that the accuracy of the measurement results depends not only on the correct operation and func-tioning of the device, but also on a variety of peripheral conditions beyond the control of the manufacturer. Therefore, the results obtained from this device must be examined by an expert (e.g. for plausibility) before any action is taken based on those results.Any adjustment and maintenance work necessary on instruments when open and under voltage must be carried out by a professional technician who is aware of the dangers.Repairs to the device may be carried out by the manufacturer or qualified service personnel only.When the device is in use, an expert must ensure that neither the object under test nor the testing equipment is operated under conditions that may lead to damage or injury.

List GmbHProduct Guide

Warnings and Safety Instructions4microIFEM Piezo Module 4P3E/F/G/H

Grouped Safety Messages 5Grouped Safety Messages

WARNING

Danger of explosion and injuryThis device must not be used in any environment where there is a danger of explosion.

CAUTION

Danger of death from electrical voltageConnected equipment that uses voltages equal to or greater than 50 V AC or 75 V DC must comply with the requirements of the 2006/95/EC Low Voltage Directive.

To ensure that the risk of electric shock is minimized, the device may only be opened by qualified staff.To prevent the risk of fire and electric shock, the device must not be exposed to rain or permanent humidity or moisture.If a foreign body or liquid gets inside the device, disconnect the device from the power supply and have it checked by an expert before using it again.Make sure that the device is supplied with the correct supply voltage.Only use the supplied power supply cable with protective ground.Only connect the power supply cable to a grounded socket.Disconnect the equipment from the power supply system whenever you change a fuse.

NOTICE

Only shielded cables may be used with appropriately shielded connectors in order to comply with the 2004/108/EC Electromagnetic Compatibility Directive.Power supply connections with standardized connectors and the exceptions mentioned do not need to be shielded.Always place the device in a position that allows air to circulate freely through the device's venting aperture.

Information

When disposing of the product or of parts of it, make sure that the legal regula-tions in force in the country in which the device is operated are observed (e.g. regulations for the disposal of electronic scrap). The device must always be completely emptied of any fuel which might be present.Product Guide

Grouped Safety Messages6microIFEM Piezo Module 4P3E/F/G/H

Table of Contents 7Table of Contents

Warnings and Safety Instructions................................................................................................................ 3

Grouped Safety Messages ............................................................................................................................ 5

1 What You Should Know.................................................................................................... 91.1 Safety Instructions .................................................................................................................... 9

1.2 Intended Purpose of Application............................................................................................... 9

1.3 About this Documentation ...................................................................................................... 101.3.1 Abbreviations and Glossary Terms................................................................................... 101.3.2 Typographic Conventions ................................................................................................. 101.3.3 Online Help ....................................................................................................................... 111.3.4 We Want to Hear from You............................................................................................... 11

2 General ............................................................................................................................. 132.1 Applicability............................................................................................................................. 13

2.2 Application .............................................................................................................................. 13

2.3 Basic Equipment..................................................................................................................... 14

2.4 Options ................................................................................................................................... 142.4.1 External Voltage Supply.................................................................................................... 142.4.2 Cascading Package.......................................................................................................... 14

3 System Overview............................................................................................................. 153.1 Front View .............................................................................................................................. 15

3.2 Rear View............................................................................................................................... 16

3.3 Cascading............................................................................................................................... 17

4 General Operating Instructions, Input Cable................................................................ 194.1 Cable Length, Cable Installation............................................................................................. 19

4.2 Insulation ................................................................................................................................ 19

4.3 Cable Noise ............................................................................................................................ 19

4.4 Electromagnetic Compatibility ................................................................................................ 19Product Guide

Table of Contents85 IndiSignal Operating Software ....................................................................................... 215.1 Installation .............................................................................................................................. 21

5.2 IndiSignal View ....................................................................................................................... 225.2.1 Toolbar ..............................................................................................................................225.2.2 Rack View .........................................................................................................................235.2.3 Transducers and Calibration .............................................................................................235.2.4 Status Bar .........................................................................................................................23

5.3 General Information About Calibration ................................................................................... 24

5.4 Settings 4P3x ......................................................................................................................... 255.4.1 Piezo Amplifier Tab ...........................................................................................................255.4.2 Calibration Info Tab...........................................................................................................30

5.5 Functions ................................................................................................................................ 315.5.1 Drift Compensation ...........................................................................................................315.5.2 Calculation of the Calibration Factor ................................................................................325.5.3 Electronic Sensor Data TEDS (SDC)................................................................................325.5.4 Calibration with Dead-Weight Tester (IndiSignal Stand-alone Only).................................35

5.6 Measurement.......................................................................................................................... 45

5.7 Offline Mode ........................................................................................................................... 45

5.8 INDISIGNAL.INI...................................................................................................................... 465.8.1 INDISIGNAL.INI Settings ..................................................................................................46

5.9 SENSORCAL.TXT.................................................................................................................. 47

6 Maintenance..................................................................................................................... 49

7 Technical Data ................................................................................................................. 517.1 General................................................................................................................................... 51

7.2 Signal Input............................................................................................................................. 51

7.3 Signal Output.......................................................................................................................... 52

7.4 Transmission Data.................................................................................................................. 52

7.5 Data of Other Functions ......................................................................................................... 53

7.6 Pin Assignment - Rear Panel ................................................................................................. 547.6.1 Connector RS232 OUT (X7) / Socket RS232 IN (X8) .......................................................547.6.2 Connectors 9.5 ... 36 V DC IN (X1) / 9.5 ... 36 V DC OUT (X2) ........................................557.6.3 Connector X9 ....................................................................................................................557.6.4 Connector Socket to Connector X9...................................................................................56

8 Appendix .......................................................................................................................... 578.1 CE Compliance....................................................................................................................... 57

Index.............................................................................................................................................................. 59microIFEM Piezo Module 4P3E/F/G/H

What You Should Know 91 What You Should Know

This documentation describes the functionality of the microIFEM 4P3x Piezo Amplifier family, which includes the following types:Suitable for TEDS with Fischer connector (AVL SDC): 4P3E Piezo Amplifier Standard 4P3F Piezo Amplifier Double Range 4P3G Piezo Amplifier with SID Sensor Identification (with SAW print) 4P3H Piezo Amplifier Double Range and SID Sensor Identification

(with SAW print)Double Range If the expected sensor charge exceeds 14400 pC, this version provides the

option of using the double range.SID Using this option and the relevant sensors, the sensitivity values can be deter-

mined automatically by the amplifier.This chapter provides general information on the following topics: important warnings and safety instructions this documentation in general

1.1 Safety InstructionsThis documentation contains a number of important warnings and safety instructions that must be observed by the user. Smooth operation can only be ensured if the requirements are met and the safety instructions are followed.

1.2 Intended Purpose of ApplicationThe product is only intended for the area of application which is described in the documentation. If used contrary to its intended purpose or if the prerequisites and safety instructions mentioned are not observed, no guarantee and/or liability shall be assumed. Due to the operating principle of this product, the accuracy of measurement results which it produces does not only depend upon its correct operation and function, but also upon a variety of boundary conditions beyond the control of the manufacturer. Therefore the results obtained from this product must be subjected to careful examination by an expert (e.g. for plausibility) before action based upon the results is undertaken.It is explicitly stated that use of this product alone will not ensure safety-related monitoring of the operating condition of the combustion engine under test.

NOTICE

This documentation is not intended to and should not replace adequate training!Product Guide

What You Should Know101.3 About this DocumentationThis documentation has been written for test bed engineers/application engi-neers who set up and execute indicating measurements.It covers the following topics: Setup Parameterization Calibration and Maintenance

For details about working with AVL Indicating Systems, refer to the relevant IndiCom system manual.

1.3.1 Abbreviations and Glossary TermsSDB Sensor Data BaseSDC Sensor Data ConnectorSID Sensor IdentityTEDS Transducer Electronic Data Sheet

1.3.2 Typographic ConventionsSafety messages:

Additional safety symbols:

Notes:

WARNING

WARNING indicates a hazardous situation which if not avoided could result in death or serious injury.

CAUTION

CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury.

Voltage hazard warning

NOTICE

This text indicates situations or operation errors which could result in property damage or data loss.

Information

This text indicates important information or operating instructions. Not observing these instructions could inhibit or impede you from successfully completing the tasks described in this documentation.microIFEM Piezo Module 4P3E/F/G/H

What You Should Know 11Standard text styles:

Lists:

1.3.3 Online HelpThis printed manual is also available as online Help.To access online Help: open the Help menu or press the F1 key for context-sensitive Help.

1.3.4 We Want to Hear from YouYour comments and suggestions help us to improve the quality and practical relevance of our manuals.If you have any suggestions for improvement, please send them to:[email protected] look forward to hearing from you!

Bold Parameters; control elements in windows and dialog boxes; important text

Italics Cross-references; foreign-language or new terms; wildcards for elements that need to be entered by the user, i.e. characters or text. If you read, for example, macro name, you are required to type the name of a macro.

UPPERCASE LETTERS Operating statesCourier Programming examples, source codeTimes New Roman FormulasMenu | Option Description of how to select a menu item from a

given menu

1.2.

Step-by-step procedures with a given sequence

One-step instructions

Unordered series of concepts, items or options

Product Guide

What You Should Know12microIFEM Piezo Module 4P3E/F/G/H

General 132 General

2.1 Applicability4P3E bis 4P3H, Rev. Level 00

2.2 ApplicationThe microIFEM Piezo Module 4P3x is designed as a compact 4-channel ampli-fier. Its small size makes it perfectly suitable for use in test cells close to the pres-sure transducers or in the vehicle.The connections on the microIFEM Piezo Module permit the remote control of the amplfiers as well as the transmission of the output signals.Electrical isolation of each channel's power supply and use of a differential output amplifier ensure that the microIFEM Piezo Module is also suitable for use in environments with severe interference. The high upper cut-off frequency on the other hand permits highly dynamic measurements. AVL Piezo Amplifiers 4P3x are used to measure the electrostatic charges gener-ated by pressure transducers in pressure, force and acceleration measurement systems. The extremely high input resistance makes it possible to carry out quasi-static measurements. The large sensitivity range means that the amplifier can be used in conjunction with most piezoelectric measurement transducers. An integrated drift compensation function ensures drift free measurement results where the isolation conditions are less than ideal.The option of reading sensor data from a sensor data connector or a database (either manually or automatically via SID) is one of the most important new features. This includes both calibration values and sensor runtimes. AVL SDC (Sensor Data Connector) or

TEDS (Transducer Electronic Data Sheet)This additional connector contains a memory in which the characteristic data are stored. Type, serial number and sensitivity according to the set input range are read out of this memory.

SDB (Sensor Data Base) Here you can select a sensor type and a serial number via an input field. Sensitivity is then read out automatically from a Sensor Database according to the set input range.

SID (Sensor Identity) If SID is activated, the amplifier identifies the unique sensor ID number which allows to read the type, serial number and sensitivity of the sensor from the Sensor Database. (Requires amplifier with SID detection (4P3G, 4P3H) and piezo transducers provided with SID.)Product Guide

General142.3 Basic Equipment 1 microIFEM Piezo Module 4P3x 1 serial interface cable, 5m 1 power supply cable, 10m 4 BNC connecting cables E109 - 1.5 4 clamp-on ferrites 1 CD-ROM with IndiSignal program 1 Product Guide

2.4 Options

2.4.1 External Voltage SupplyTo supply the microIFEM 4FM2, 4P3x, 4C3x.

*) This type is out of production and will be replaced by TR70 =EN0457=

2.4.2 Cascading PackageThe Cascading Package (TI04FCCSA.01) includes 1 serial interface cable and 1 power supply cable, 30 cm each.

TypeModel

IN Maximum no. of connectable micro-

IFEM 4xxx

Maximum ambient temperature

TR70=EN0457=

100 - 240 V AC50 - 60 Hz

1.5 A

4 45 C

3 50 C

2 55 C

1 60 C

6FA1Z01*)

100 - 240 V AC50 - 60 Hz

1.3 A

3 55 C

2 60 C

Tab. 1 microIFEM Piezo Module 4P3E/F/G/H

System Overview 153 System Overview

3.1 Front View

Q1 to Q4 Connection for pressure transducers

Lefthand sockets BNC sockets for pressure transducers with BNC connector

Righthand sockets

4-pin FISCHER sockets for pressure transducers with Sensor Data Connector (SDC)

4 LEDs Status display of each amplifier channelGREEN: Regular operating state.ORANGE: Acknowledgement of a control signal.RED flashes: The amplifier channel is in saturation.

Fig. 1 microIFEM Piezo Module 4P3E/4P3F/4P3G/4P3H, front view

Q1

AVL MICRO IFEMQ2 Q3 Q4

PIEZOProduct Guide

System Overview163.2 Rear View

X1 IN9.5 ... 36 V DC Power supply connection (9.5 to 36 V DC)X2 OUT9.5 ... 36 V DC DC voltage output. If microIFEMs are cascaded, the next microIFEM can be

connected to this DC voltage output for power supply.

X3 to X6CH4 to CH1

BNC output sockets for the analog signal of the respective amplifier.

UNIT ADDRESS Address switch for cascading:Address must be set to 0 if only one microIFEM is used. If microIFEMs are cascaded, the first microIFEM must be set to address 0. The address must be increased by 1 for each subsequent microIFEM.

X7RS232 OUT Serial connection to another microIFEM if microIFEMs are cascaded.X8RS232 IN Connection to the PC serial port or to the RS232 OUT socket of the previous

microIFEM if microIFEMs are cascaded.X9 Connection for Mounting Tray for 4 microIFEMs (TI04F4MTA.02).

Fig. 2 microIFEM Piezo Module 4P3x, rear view

FOLLOW THE DIRECTIONS! DONTOPERATE THIS INSTRUMENTIN EXPLOSIVE HAZARDOUS LOCATIONS!

UNIT ADDRESSCH4 X3 CH3 X4 CH2 X5 CH1 X6

X7 OUT RS232 IN X8X9X1 IN 9.5 ... 36 V DC OUT X2

012

34 6

8

7

NOTICE

For restrictions, see sections Cascading on page 17 and Technical Data on page 51.microIFEM Piezo Module 4P3E/F/G/H

System Overview 173.3 Cascading1. Up to 9 additional devices of the microIFEM family can be cascaded. Con-

nect the PCs serial interface to the RS232 IN socket on the rear panel of the first microIFEM. Set the UNIT ADDRESS switch on this rack to 0.

2. For cascading, connect the RS232 OUT socket of the first microIFEM to the RS232 IN socket of the second microIFEM. Connect the 9.5 ... 36 V DC OUT socket of the first microIFEM to the 9.5 ... 36 V DC IN socket of the second microIFEM. Set the UNIT ADDRESSswitch on the second microIFEM to 1.

3. Connect additional microIFEMs following the same principle, increasing the address by 1 for each rack added.

The RS232 and power supply connecting cables are 1:1 connecting cables. For the connector pin assignment and cable types, see section Pin Assignment - Rear Panel on page 54.

Information

Indimaster Advanced 671 only: If more than 9 devices are cascaded, it is possible to connect these devices to an additional serial interface on your PC.

NOTICE

Make sure that the maximum continuous current of the supply connector does not exceed 8 A.E.g.: 24 V DC power supply: 15 W/24 V = 0.625 A, i.e. 9 racks can be cascaded.E.g.: 12 V DC power supply: 15 W/12 V = 1.25 A, i.e. 6 racks can be cascaded.

Also ensure that the start-up power consumption (22 W per unit) of all micro-IFEMs does not exceed the maximum power output of the power supply! The optional AVL Power Supply Unit TR70 can supply up to four AVL micro-IFEMs.Product Guide

System Overview18microIFEM Piezo Module 4P3E/F/G/H

General Operating Instructions, Input Cable 194 General Operating Instructions, Input Cable

4.1 Cable Length, Cable InstallationFor best signal quality ensure that: The amplifier input cable is kept short. The amplifier input cable is installed as far away from other cables as pos-

sible. The amplifier input cable is not exposed to mechanical stress and vibra-

tions. The connections of the input cable are kept clean and dry.

4.2 InsulationFor quasi-static operation, the cable should have an insulation resistance of >1013 Ohm, otherwise the output voltage of the charge amplifier will drift signifi-cantly.

4.3 Cable NoiseNormal coaxial cables generate electrical charges as a result of vibrations due to friction between the shield and dielectric. To prevent this effect, coaxial cables used for piezo electric measurements should have an additional coating of graphite or conductive plastic on the dielectric material.

4.4 Electromagnetic CompatibilityTo comply with the Electromagnetic Compatibility (EMC) directive it is neces-sary to mount a clamp-on ferrite core onto the input signal cable (included in scope of supply, see the figures below) close to the connector:

Fig. 3 Position of ferrite core (thick cable)

Ferrit Core

Piezo Amplifier

Fig. 4 Position of ferrite core (thin cable)

Ferrit Core

Piezo AmplifierProduct Guide

General Operating Instructions, Input Cable20microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 215 IndiSignal Operating Software

5.1 InstallationThe AVL microIFEM system is fully remote controlled via a serial connection. The microIFEMs are parameterized by means of the operating software IndiSignal.Depending on your indicating system, the software is available in different versions. The basic operation is the same with all versions.

IndiCom IndiSignal is an integral part of the Graphical Parameter Explorer IndiPar in IndiCom. Not only the the data acquisition hardware, but also the microIFEMs are visualized.In this case, it is not necessary to do a separate IndiSignal installation. Set the relevant COM port in the [IndiSignal] section within the

INDICOM.INI file.Stand-alone For all other systems, install IndiSignal as a separate program, which is provided

on the CD that comes with the microIFEM.1. Insert the CD-ROM into the CD drive. The installation procedure will be

started automatically if the Autorun function is enabled. If it does not start automatically after inserting the CD-ROM, double-click the file INSTALL.EXE in the directory Install on your CD-ROM.

2. Follow the instructions on the screen.By default, IndiSignal assumes a connection to the microIFEM via serial connection COM1. however you are free to change this to COM2 to COM8 in file INDISIGNAL.INI (see section INDISIGNAL.INI on page 46).

Information

Administrator privileges are required for installation.Product Guide

IndiSignal Operating Software225.2 IndiSignal ViewThe IndiSignal window is composed of the following areas:

5.2.1 Toolbar

1 .... Toolbar2 .... Rack View3 .... Transducers and Calibration4 .... Status Bar

Fig. 5 IndiSignal main window

1

2

3

4

Check for new amplifiers Not relevant for microIFEM because the location of the amplifiers is fixed.

PropertiesDisplays the Properties dialog of the selected amplifier.

Overrange check onWhen this button is clicked, IndiSignal continuously monitors the overrange state of all amplifiers and displays it via different colors of the LED symbol. The state is checked every 5 seconds. Click the button again to deactivate the mode.Calling up a properties menu and reloading amplifiers or sensors will also deac-tivate the function.Reset all Piezo AmplifiersWhen you click this button, the system will reset all installed Piezo Amplifiers in all available racks (i.e. set their output voltage to 0 V or -8 V).Reset Piezo Amplifiers at BDCWhen you click this button, the system will reset all installed Piezo Amplifiers in all available racks in the correct pressure phase (i.e. to 0 V or 8 V).OverviewDisplays system information about the microIFEM and its amplifiers. Use the mouse to enlarge the window if you need to!TemperatureDisplays the current temperature of the amplifiers and the modules in deg. Celsius.microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 235.2.2 Rack ViewThis part of the view displays the selected microIFEM. Devices can be selected in the status bar at the bottom of the window. Just click the required microIFEM or the associated option button.

The selection of the Properties dialog of an amplifier may be done in different ways: Double-click the relevant amplifier. When you click an amplifier, it will be marked with a red frame. Click the

button to call up the Properties dialog.

Right-click an amplifier area to show a context menu.Select Properties from the menu.

For details about amplifier settings, see section Settings 4P3x on page 25.

5.2.3 Transducers and CalibrationThis view shows a simplified version of calibration data. You see there sensitivity, type and serial number of the connected sensors and the range of corre-sponding amplifier. If a connection to an input channel of the data acquisition unit exists, this is also shown. If you double-click into this view, a small input dialog will be opened and you can edit these parameters without having to open the full Properties dialog.Modifications are submitted by pressing RETURN.If the TEDS (SDC), SID or SDB functions are activated for a piezo transducer, the system will read in type, serial number and sensitivity from the data connector or the database. These values are not editable.

5.2.4 Status BarThe status bar shows all connected microIFEMs and is used to select micro-IFEMs for parameter setting.

HelpStarts the online Help.

Refresh Sensor DataReloads the sensor data of all connected sensors (SDC, SID) into the relevant amplifier.Auto connect (IndiCom)Calls up a dialog in which the amplifier channels can be connected automatically to an input channel group of a data acquisition unit.

Information

If you are working with IndiCom, you also see here icons for the connected acquisition units. The corresponding unit is shown when you click the icon. These two views can also be used to define the connection between data acqui-sition and microIFEM.Product Guide

IndiSignal Operating Software245.3 General Information About CalibrationEvery amplifier is configured in the associated Properties dialog in IndiSignal. In this dialog, the sensor and measurement parameters are input, and the calibration factor is automatically calculated. It is also possible to input additional information about the sensor (i.e. type of sensor, serial number; etc.) and to set operating parameters of the amplifier. These parameters are then stored in a non-volatile memory in the amplifier.If the TEDS (SDC), SID or SDB functions are activated for a piezo transducer, the system will read in type, serial number and sensitivity from the data connector or the database. These values are not editable.The signal calibration factor, which is shown on the second page of the Proper-ties dialog of every amplifier, has to be used for the signal calibration in the connected indicating system.If you work with IndiCom, it is not necessary to manually transfer this calibration factor. When establishing a connection between an analog input channel in the indicating system and an amplifier in the microIFEM, the calibration factor is automatically transferred to IndiCom.For more information on this subject, see Users Guide IndiPar, chapter IFEM/microIFEM Signal Conditioning.microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 255.4 Settings 4P3x

5.4.1 Piezo Amplifier Tab

This Properties dialog shows all Piezo Amplifier settings, which can be changed if required.

5.4.1.1 Calibration

The calibration area of the dialog is where the gain is defined as a function of the measuring range (Signal Input Range input field) in the corresponding unit (bar, psi, MPa, kPa, Pa, g) and the sensor sensitivity (Transducer Sensitivity input field). The ideal gain is calculated internally with a resolution of 12 bit.The characteristic sensor data can be input in the Transducer Type and Serial Number fields.

Fig. 6 Piezo Amplifier Properties

Information

If this amplifier has already been calibrated with a dead weight tester, the calibra-tion parameters are locked for input.Product Guide

IndiSignal Operating Software265.4.1.2 TEDS (SDC)

Requirements IndiCom version: as of 1.6 SPbIndiSignal version: as of 2.8microIFEM: 4P3E / 4P3F / 4P3G / 4P3HSelecting the check box TEDS (SDC) activates the reading of the sensor data from a connected TEDS element (TEDS = Transducer Electronic Data Sheet).To call up the Properties dialog of the TEDS, click the button shown below. For details, see section Electronic Sensor Data TEDS (SDC) on page 32.

Fig. 7 Piezo Amplifier Properties, TEDS

Information

The system will automatically use the optimal gain, depending on the set signal input range.microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 275.4.1.3 SID (Sensor with ID)

Requirements IndiCom version: as of 1.6 SPbIndiSignal version: as of 2.8microIFEM: 4P3G / 4P3HIf a sensor with SID is used, the sensor identity will be determined if this check box is activated and the Apply button is clicked. For this purpose, the unique ID stored in the sensor is read out and searched for in the database. If a sensor with this ID is found in the database, the fields Transducer Sensi-tivity, Transducer Type and Serial Number are automatically filled with values.

Fig. 8 Piezo Amplifier Properties, SID

Information

The system will automatically use the optimal gain, depending on the set signal input range.

Information

A central Sensor Database is required to use this function. For installation and operation of the Sensor Database, please turn to your AVL branch for details.Product Guide

IndiSignal Operating Software285.4.1.4 SDB (Database)

Requirements IndiCom version: as of 1.6 SP bIf you are using a sensor without SID, you can nevertheless utilize the benefits of a database. Activating this check box allows you to select the Transducer Type and Serial Number. The Transducer Sensitivity will be read automatically from the database and input in the relevant field.

Fig. 9 Piezo Amplifier Properties, SDB

Information

The system will automatically use the optimal gain, depending on the set signal input range.

Information

A central Sensor Database is required to use this function. For installation and operation of the Sensor Database, please turn to your AVL branch for details.microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 295.4.1.5 Settings

-8 V Output OffsetIf the 8 V Output Offset check box is activated, an offset summing of -8 V ensures better ADC range utilization with cylinder pressure signals. This is effectively the same as shifting the zero line by -8 V.

Isolated SensorRequirements:IndiCom version: as of 1.6IndiSignal version: as of 2.8microIFEM: 4P3xIf this check box is activated, the sensor input ground is connected to pro-tective ground.

Drift CompensationIf this check box is activated, a field will be displayed to the right containing the two options Cyclic and Continuous. Cyclic is the mode used in the past and requires cyclic signals, such

as e.g. cylinder pressures or line pressures. Continuous mode has been implemented for offset correction of

low-pressure signals, because these signals cannot be corrected appropriately with the cyclic method.

Reset With the check box Reset you can reset this Piezo Amplifier (0 V or

-8 V) permanently. Needed if this channel is not used. If you want to reset the amplifier for a short time and then use it, you

have the following possibilities:Right-click the relevant amplifier to open the context menu. Select Reset to reset the amplifier.Click the following button on the toolbar:

All amplifiers of all cascaded microIFEM racks will be reset.

NOTICE

Only use with sensors whose housing is isolated from sensor ground!Using this setting with normal sensors (housing connected to sensor ground) may cause strong signal distortion due to ripple voltages.

NOTICE

Make sure to use the drift compensation appropriate for your signal type! The minimum signal lift for the detection of cyclic signals is approx. 0.7 V. Make sure that the amplitudes of the cylinder pressure signal exceed 0.7 V, even at idle.(Utilize the output offset of -8 V and set the gain in a way that, at full load, the output range is optimally used.)For Cyclic or Continuous drift compensation, the following firmware must be provided in the piezo module:Piezo Amplifier: 03Mainboard: 05The relevant versions can be shown via the Overview toolbar button in IndiSignal.Product Guide

IndiSignal Operating Software30 If you want to reset the amplifier in the correct pressure phase ("grounding"), click the button

on the toolbar. All amplifiers in all cascaded microIFEM 4P3x racks will be reset in the correct pressure phase. Phase-correct resetting means that the RESET function is activated in the low-pressure portion of the pressure signal. This prevents the pres-sure curve from being shifted downward in the high-pressure portion when the RESET button is pressed.

5.4.1.6 Drift

The check box that is activated shows the drift compensation method currently selected.

5.4.1.7 Filter

The displayed frequency shows the upper cut-off frequency currently set (-3 dB).

5.4.1.8 Buttons

OKSubmits the settings and stores them in the Piezo Amplifier. The dialog is then closed.

CancelThe modified settings are not submitted. The amplifier will keep the original settings. The dialog is then closed.

ApplySubmits the settings and stores them in the Piezo Amplifier. The dialog is not closed.

5.4.2 Calibration Info Tab

This tab displays the calibration factor determined by the set measuring range and the transducer sensitivity.

Fig. 10 Piezo Amplifier Calibration InfomicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 315.5 Functions

5.5.1 Drift CompensationConnectable device for compensating zero drift of the output voltage (Uout).

A charge amplifier with no zero point drift is achieved by feeding a compensation current (Icomp) to the input of the charge amplifier that is of the same magnitude as the leak current (Iinsul) that escapes via the total insulation resistances.A control loop (consisting of input amplifier and sample-hold stage) generates a control voltage (Ucontrol) which feeds a compensation current (Icomp) to the input of the Q/U converter via a high-resistance resistor (Rhigh-resistance) so that the output voltage of the Q/U converter is 0 V/-8 V.As long as no input signal is applied to the charge amplifier or the Drift/Contin-uous radio button is activated, the S/H stage is switched through and the control loop ensures continuous drift compensation, i.e. the system attempts to maintain the Q/U converter output permanently at 0 V/-8 V.When an input signal is applied and the Drift/Cyclic radio button is activated, a trigger signal has to be delivered to the control loop to mark the point in time at which the output signal should be 0 V/-8 V. These trigger signals are not deliv-ered to the S/H stage until the signal period T 1.2 s the control loop is in continuous drift compensation mode and attempts to keep the output at 0 V/-8 V.The trigger signals are generated from the input signal by an internal processor.

Fig. 11 Block diagram of a drift compensation

UcontrolLONG DRCO

TriggerSignal

UOUT

CkRhighresist

Icomp

IinsulRinsulPiezoTransducer

S/HProduct Guide

IndiSignal Operating Software325.5.2 Calculation of the Calibration Factor See also section Settings 4P3x on page 25.If you know the sensitivity of the Piezo Transducer (Transducer Sensitivity input field) and the expected maximum pressure (Signal Input Range input field), you can set a fixed relationship between the Piezo Amplifier output voltage and the pressure to be measured, without using external calibration facilities. The error caused by the Piezo Amplifier is then within +0.3% (800 pC/V to 25 pC/V) or +0.5% (25 pC/V to 8 pC/V).Gain A is calculated by sensor sensitivity S and the signal input range pN. When you click the Apply button after entering the parameters, the amplifier is set to the following gain:

4P3E / 4C3G:

4P3F / 4C3H:

This produces a signal calibration factor (SCF) of:4P3E / 4C3G:

4P3F / 4C3H:

Regarding transfer of the signal calibration factor to the connected indicating system see section General Information About Calibration on page 24.If the maximum pressure that occurs during operation is not known, we recom-mend starting with a high initial value and then reducing it until the Piezo Ampli-fier goes into saturation (check by means of LED or overrange check; red LED icon). Then increase the value until the overrange check shows a green LED icon.

5.5.3 Electronic Sensor Data TEDS (SDC)Based on the AVL SDC-TEDS, the following sections show the dialogs with which the data stored in a connected TEDS can be displayed or changed.The contents of these dialogs may differ, depending on TEDS type and sensor manufacturer.

A 8000 for 0 V offset( ) or 14400 for -8 V offset( ) pC ][ ]S pCbar

-------- pN bar[ ]----------------------------------------------------------------------------------------------------------------------------------

A 16000 for 0 V offset( ) or 28800 for -8 V offset( ) pC[ ]S pCbar

-------- pN bar[ ]----------------------------------------------------------------------------------------------------------------------------------

SCF barV-------- 800 pF[ ]

S pCbar-------- A

----------------------------=

SCF barV-------- 1600 pF[ ]

S pCbar-------- A

----------------------------=microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 335.5.3.1 Header

AVL Sensor TypeType of sensor.

AVL Serial NumberSerial number of sensor.

Sensor ID Layout Version

Version number of internal memory allocation. Total Operating Time

Total operating time of the sensor. When you start IndiCom, the operating time counter in the amplifier is set to 0. As soon the amplifier gets a cylinder pressure signal, this internal counter recognizes the duration. When IndiCom is stopped, the current counter content will be added to the field Total Operating Time. The time unit can be defined in the file INDICOM.INI (sec/h).; View SDC Operating Time in seconds or hours (sec/h)ViewTime=h

Total Operating CyclesTotal number of engine cycles of the sensor.

EditBy clicking Edit you can switch to the Edit mode, which enables you to edit the values in the Property column. At the same time, the button Burn is activated which allows you to save the modifications in the SDC.

CloseCloses the dialog.

Fig. 12 AVL SDC, Header tabProduct Guide

IndiSignal Operating Software345.5.3.2 Calibration

This tab displays the calibration data. Calibration Date

Date of the calibration. User Name

Name of the person who does the calibration. Remark

Commentary Operating Time

In this field you see the operating time for the current calibration. If you recalibrate the sensor, the current data including the operating time will be moved to the History 1 page and the operating time will be set to 0.

Range 1 to 3, Sensitivity 1 to 3 and Linearity 1 to 3In these fields you can input the calibration values for up to 3 ranges. The calibration factor is selected automatically according to the defined input signal range. The calibration values are taken from the Current page (see list box in upper righthand section of window).

Sensor calibrationTo calibrate a sensor, first click the button New. The calibration data of the Current page will be moved to the History 1 page. History 1 will become History 2, etc. The pages History 1 to 5 allow you to compare the current calibration with the previous ones and see whether there are any changes.

EditBy clicking Edit you can switch to the Edit mode, which enables you to edit the values in the Property column. At the same time, the button Burn is activated which allows you to save the modifications in the SDC.

CloseCloses the dialog.

Fig. 13 AVL SDC, Calibration tab

ExamplePressure Range (input signal range) = 80 barRange 1 to 15 barRange 2 to 50 barRange 3 to 100 barSelection of calibration factor from range 3microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 355.5.4 Calibration with Dead-Weight Tester (IndiSignal Stand-alone Only)Individual pressure transducers or the entire measurement system can be cali-brated with a dead weight tester. To do this, right-click the Piezo Amplifier and select the option Dead-Weight

Tester from the context menu. The first dialog of the Calibration Wizard is then displayed where you can choose one of three calibration methods: Transducer Calibration Calibration of the Entire Measurement System with Preselected Output

Voltage Calibration of the Entire Measurement System with Preselected Max-

imum Pressure

5.5.4.1 Transducer Calibration

The following example shows how to calibrate a sensor on a dead weight tester, i.e. how to determine the sensitivity in pC/bar.The selected calibration pressure is 120 bar, the voltage at ambient pressure is set to -8 V.1. If you want to calibrate the transducer with a dead-weight tester, activate

the Transducer Calibration check box.

2. Click Next.

3. Mount the pressure transducer on the dead weight tester and input the cali-bration pressure (Calibration Pressure input field) as well as the approxi-mate sensitivity (Estimated Transducer Sensitivity input field).

Fig. 14 Transducer Calibration

Fig. 15 Calibration parameters for transducer calibrationProduct Guide

IndiSignal Operating Software364. Enter the pressure transducer data. Select 8 V offset voltage for optimum utilization of the measurement range.

5. Enter the user ID (User-ID input field) and click Next.

6. Click Reset to reset the charge amplifier to its original status. Read the output voltage without calibration pressure (e.g. with the DVM function of the indicating instrument) and enter this voltage value in the Without Pres-sure Weight input field.

7. Apply the calibration pressure. Read the output voltage with calibration pressure and enter this voltage value in the With Pressure Weight field.

8. Click Next.

9. Read the automatically calculated pressure transducer sensitivity under Transducer Sensitivity. You can print out these data by clicking Print or save it to a text file by clicking Save.It is also possible to save or print out the calibration results. See section SENSORCAL.TXT on page 47.

10. Click Finish to close the Calibration Wizard.

Fig. 16 Voltages measured during transducer calibration

Fig. 17 Transducer calibration resultsmicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 375.5.4.2 Calibration of the Entire Measurement System with Preselected Output Voltage

The example given below shows the calibration of the entire measurement system with preselected output voltage.The selected calibration pressure is 120 bar, the required voltage difference between calibration pressure and offset is 16 V. The estimated sensitivity is 17 pC/bar.1. If you want to calibrate the entire measurement system using a dead weight

tester with preselected output voltage, activate the Measuring chain cali-bration check box and click the Output voltage predefined option button.

You can use this to obtain the required output voltage (maximum 10 V) for a specific calibration pressure.

2. Mount the pressure transducer on the dead-weight tester.3. Input the calibration pressure (Calibration Pressure input field) and the

approximate sensitivity (Estimated Transducer Sensitivity input field).4. Enter the pressure transducer data.5. In the Voltage at calibration pressure input field, enter the required output

voltage at the applied calibration pressure (in the example 8 V).6. Select 8 V offset voltage for optimum utilization of the measurement range.

The internal gain will be calculated with the following values: Calibration Pressure (in the example 120 bar) Estimated Transducer Sensitivity (in the example 17 pC/bar), and an Output voltage ~16 V (= voltage difference between calibration pres-

sure and offset).

Fig. 18 Calibration of measurement system with predefined output voltage

Fig. 19 Calibration parameters with predefined output voltageProduct Guide

IndiSignal Operating Software387. Enter the user ID (User-ID input field) and click Next.

8. Click Reset to reset the charge amplifier to its original status.9. Read the output voltage without calibration pressure (e.g. with the DVM

function of the indicating instrument) and enter this voltage value in the Without Pressure Weight input field.

10. Apply the calibration pressure.11. Read the output voltage with calibration pressure and enter this voltage

value in the With Pressure Weight field.12. Click Next.

A calibration protocol is shown in a dialog. You can print out these data by clicking Print or save it to a text file by clicking Save.After this calibration, the system can calculate the exact sensitivity of this transducer (in our example 16.81 pC/bar instead of the estimated 17 pC/bar).If you now repeat the calibration (click Repeat calibration), the calculated sensitivity (in the example 16.81 pC/V) will be transferred automatically into the field Estimated Transducer Sensitivity and the Calibration Wizard dialog will be displayed again.

Fig. 20 Measured voltages with predefined output voltage

Fig. 21 Calibration results with predefined output voltagemicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 3913. Carry out the calibration again as described.

14. Enter the measurement values in the corresponding fields and click Next.

Based on the correct sensor sensitivity you now get the expected voltage difference of 16 V for 120 bar.It is also possible to save or print out the calibration results. See section SENSORCAL.TXT on page 47.

15. Click Finish to close the Calibration Wizard.The calibration values of the entire measurement system including the pres-sure transducer are stored in the Piezo Amplifier and can be checked on the Calibration Info tab of the Properties dialog.These calibration values cannot be deleted until the link on the Calibration Info tab of the Properties dialog is canceled.

16. To do this, click Cancel. The password to unlock the calibration values is defined in the INDISIGNAL.INI file (entry CAL PW = ).

Fig. 22 Measured voltages (adjusted) with predefined output voltage

Fig. 23 Calibration results (adjusted) with predefined output voltageProduct Guide

IndiSignal Operating Software405.5.4.3 Calibration of the Entire Measurement System with Preselected Maximum Pressure

The example given below shows the calibration of the entire measurement system with preselected maximum pressure. A maximum pressure of 140 bar is assumed. However, calibration is performed using a pressure of 120 bar. The estimated sensitivity is again assumed to be 17 pC/bar.1. If you want to calibrate the entire measurement system using a dead weight

tester with preselected output voltage, activate the Measuring chain cali-bration check box and click the Maximum pressure predefined option button.

You can use this if you want to carry out a measurement with a higher oper-ating pressure than the one you use for calibration.

2. Mount the pressure transducer on the dead-weight tester.3. Input the calibration pressure (Calibration Pressure input field) and the

approximate sensitivity (Estimated Transducer Sensitivity input field).4. Enter the pressure transducer data.5. Enter the required maximum operating pressure in the Maximum Pressure

input field.6. Select 8 V offset voltage for optimum utilization of the measurement range.

The internal gain will be calculated with the following values: Maximum Pressure Estimated Transducer Sensitivity

Fig. 24 Measurement system calibration with predefined maximum pressure

Fig. 25 Calibration parameters with predefined maximum pressuremicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 417. Enter the user ID (User-ID input field) and click Next.

8. Click Reset to reset the charge amplifier to its original status.9. Read the output voltage without calibration pressure (e.g. with the DVM

function of the indicating instrument) and enter this voltage value in the Without Pressure Weight input field.

10. Apply the calibration pressure.11. Read the output voltage with calibration pressure and enter this voltage

value in the With Pressure Weight field.12. Click Next.

A calibration protocol is shown in a dialog. You can print out these data by clicking Print or save it to a text file by clicking Save. After this calibration, the system can calculate the exact sensitivity of this transducer (in our example 16.81 pC/bar instead of the estimated 17 pC/bar).If you now repeat the calibration (click Repeat calibration), the calculated sensitivity (in the example 16.81 pC/V) will be transferred automatically into the field Estimated Transducer Sensitivity and the Calibration Wizard dialog will be displayed again.

Fig. 26 Measured voltages with predefined maximum pressure

Fig. 27 Calibration results with predefined maximum pressureProduct Guide

IndiSignal Operating Software4213. Carry out the calibration again as described.

14. Enter the measurement values in V and click Next.

Based on the correct transducer sensitivity you now get a maximum pres-sure range of 140.1 bar.It is also possible to save or print out the calibration results. See section SENSORCAL.TXT on page 47.

15. Click Finish to close the Calibration Wizard.The calibration values of the entire measurement system including the pres-sure transducer are stored in the Piezo Amplifier of the microIFEM and can be checked on the Calibration Info tab of the Properties dialog. The pass-word to unlock the calibration values is defined in the INDISIGNAL.INI file (entry CAL PW =).

5.5.4.4 Deleting the Saved Calibration Data

If you want to enter parameters directly or use a new calibration method, you first have to unlock the calibration data. To do this, click the Unlink button on the Calibration Info tab of the Prop-

erties dialog. The password to unlock the calibration values is defined in the INDISIGNAL.INI file (entry CAL PW =).

Fig. 28 Measured voltages (adjusted) with predefined maximum pressure

Fig. 29 Calibration results (adjusted) with predefined maximum pressuremicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 435.5.4.5 Calibration of the Entire Measurement System with Preselected Output Voltage for all Piezo Amplifiers

The example given below also demonstrates how to calibrate the entire measurement chain with preselected output voltage,but for multiple sensors.1. If you want to calibrate more sensors at the same time, activate the check

box All Piezo Amplifiers.

The calibrating parameters are valid for all sensors, the sensor parameters have to be defined individually.

2. After the pressure drop at the dead-weight tester, fill in the displayed voltage values for every amplifier.

Fig. 30 Calibration of measurement system with predefined output voltage for all Piezo Amplifiers

Fig. 31 Calibration parameters with predefined output voltage for all Piezo Amplifiers

Fig. 32 Measured voltages with predefined output voltage for all Piezo AmplifiersProduct Guide

IndiSignal Operating Software44Finally, the system calculates the calibrating factors and writes them into each amplifier.

3. Carry out the calibration again as described.4. Enter the measured values in the relevant fields and click Next.

Based on the correct sensor sensitivity you now get the expected voltage difference of 16 V for 120 bar.It is also possible to save or print out the calibration results. See section SENSORCAL.TXT on page 47.

5. Click Finish to close the Calibration Wizard.

Fig. 33 Calibration results with predefined output voltage for all Piezo Amplifiers

Fig. 34 Measured voltages (adjusted) with predefined output voltage for all Piezo Amplifiers

Fig. 35 Calibration results (adjusted) with predefined output voltage for all Piezo AmplifiersmicroIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 455.6 MeasurementA measurement can only be carried out when a pressure transducer is connected and the calibration has been performed. You have a choice of three modes - LONG (with no drift compensation) and DRCO (with drift compensation) Cyclic or Continuous:

LONG For quasi-static measurements. The Drift Compensation check box is deacti-vated (e.g. dead weight calibration).AdvantageAmplitude and phase of the measurement signal are not affected.DisadvantageZero point drift; reset required prior to each measurement.

DRCO Continuous For signals with no distinctive pressure maximum. The Drift Compensation check box is activated (e.g. low-pressure signals, such as e.g. intake manifold pressure). In this mode, the device attempts to keep the output permanently at 0 V or -8 V and, thus, also influences the wanted signal. For this reason, this mode is not suitable for cylinder pressure signals (IMEP errors might occur).AdvantageNo zero point drift; no reset required prior to each measurement.DisadvantageAmplitude and phase of the measurement signal might be affected.

DRCO Cyclic For periodical signals, such as e.g. cylinder pressure.AdvantageNo zero point drift, no effect on amplitude and phase, no reset necessary prior to each measurement.With signal periods T

IndiSignal Operating Software465.8 INDISIGNAL.INIThe software can be adjusted to your system configuration by changing several INI file entries. For IndiCom, you find these settings in the [IndiSignal] section of the

INDICOM.INI file. For the stand-alone version, edit the file INDISIGNAL.INI.

5.8.1 INDISIGNAL.INI Settings

Example[IndiSignal];===Language (ENG,GER)===Language = GER

;===ComPort 1,2...or OFFLINE, OFF===;===IFEM COMPORT or GLOBAL OFFLINEComPort=1

;===PreLoad Amplifier-Properties, Off=0, On=1;PreLoad=0

;===Password for removing Amplifier / Transducer Link=== CalPW=AVL

;Password for SDC EditorTEDSEditPW=AVL

;View SDC OperatingTime in seconds or hours (sec/h)ViewTime=sec

Entry Input Options Description

Language= GERENG

Dialog language GermanDialog language English(IndiSignal only)

ComPort= 1, 2 OFFLINE, OFF

Serial interface 1 or 2 Offline mode

CalPW= AVL (factory setting) or any password

Password to unlock the calibration values after dead-weight tester calibration

PreLoad= 01

0 = NO1 = YES

This parameter defines whether or not the settings of the amplifiers come from the IndiCom parameter file. The system makes a configu-ration check of racks and ampli-fiers. (Only if used with IndiCom.)

TEDSEditPW= AVL (factory setting) or any password

Password which is requested if you want to change the settings of the SDC connector.

ViewTime= sech

Defines whether the operating time of the SDC connector is displayed in seconds or hours.

Tab. 2 microIFEM Piezo Module 4P3E/F/G/H

IndiSignal Operating Software 475.9 SENSORCAL.TXTCalibration Results:--------------------

Transducer Type: QH33DSerialnumber: N199Maximum Pressure Range: 120.1 barCalibration Pressure: 120 bar

Sensitivity: 16.84 pC/barSignal Calibration Factor: 6.67162 bar/V

User: WGDate: 07-25-2005********************Calibration Results:--------------------

Transducer Type: QH33DSerialnumber: N120Maximum Pressure Range: 120.2 barCalibration Pressure: 120 bar



Transducer Type: QH33DSerialnumber: 1745Maximum Pressure Range: 120.1 barCalibration Pressure: 120 bar



Transducer Type: QH33DSerialnumber: A188Maximum Pressure Range: 120.0 barCalibration Pressure: 120 bar


User: WGDate: 07-25-2005********************Product Guide

IndiSignal Operating Software48microIFEM Piezo Module 4P3E/F/G/H

Maintenance 496 Maintenance

General The AVL microIFEM 4P3x needs no routine maintenance. However, every charge amplifier that works on a quasi-static principle requires an extremely high insulation resistance at the input to prevent the tendency to drift (i.e. its output voltage gradually changes even without an input signal).The high insulation resistance of Piezo Amplifiers at the time of delivery can only be maintained if the devices are always kept dry and clean.If the Piezo Amplifier is in perfect condition, the drift is

Maintenance50microIFEM Piezo Module 4P3E/F/G/H

Technical Data 517 Technical Data

7.1 GeneralPollution degree 2Power supplyInput voltage range 9.5 V to 36 V DCMax. continuous current load of supply connector8 APower consumption22 W start-up power, 15 W continuous powerDimensions218 x 42 x 230 mm (width x height x depth), depth including cable connections: 250 mmWeight1 microIFEM = 1.5 kg19" trough including 2 pieces microIFEM = 4 kgAmbient temperature-40 C ... +60 C(see also section External Voltage Supply on page 14)Storage temperature0 C ... +80 CMaximum relative humidity 80% for temperatures up to 31 C, with a linear decrease to 50% relative humidity at 40 C, non-condensing.

7.2 Signal InputTypeAsymmetric, highly insulated for connecting piezoelectric measurement trans-ducers.ConnectionBNC socket or FISCHER sockets Q1 to Q4 on the front panel.Insulation resistance>1013 OhmOverload capacityInput protected against electrostatic voltages and charges occurring during oper-ation and handling.Product Guide

Technical Data527.3 Signal OutputTypeAsymmetric, output ground connected to protective ground and decoupled from the input ground by means of a differential amplifier.ConnectionBNC socket on the rear panel of the microIFEM.Voltage-11 V ... +11 V at load >333 OhmCurrent+30 mA max.Output offset0 V or 8 V selectableTemperature drift

Technical Data 53Frequency Response

Upper cut-off frequency(-3 dB)Adjustable: 100 kHz / 50 kHz / 12 kHzLower cut-off frequency DRCO OFF

Quasi-static measurements possible. The time constant depends mainly on the degree of soiling and humidity of the highly insulated elements, the con-nected cable and the measurement transducer.

DRCO ONZero point drift-free, depending on the measurement signal period: Measurement signal period T 1.2 s:

Continuous drift compensation(i.e. amplitude and phase are affected)

Drift (due to leakage current)+0.03 pC/s (at 25 C, DRCO OFF)Hum and noise

Technical Data547.6 Pin Assignment - Rear Panel

7.6.1 Connector RS232 OUT (X7) / Socket RS232 IN (X8)

Assignment Signal

Pin 1 Not used.Pin 2 TXDPin 3 RXDPin 4 Not used.Pin 5 GroundPin 6 Not used.Pin 7 Not used.Pin 8 Not used.Pin 9 Not used.Socket housing Cable shield (protective

ground)

Tab. 3

Fig. 36 9-pin Sub-D connector RS232 OUT (X7)

Fig. 37 9-pin Sub-D socket RS232 IN (X8)microIFEM Piezo Module 4P3E/F/G/H

Technical Data 557.6.2 Connectors 9.5 ... 36 V DC IN (X1) / 9.5 ... 36 V DC OUT (X2)

7.6.3 Connector X9

Assignment Signal

Pin 1 GroundPin 2 Protective groundPin 3 +24VSocket housing Cable shield (protective

ground)

Tab. 4

Fig. 38 3-pin Sub-D connectors 9.5 ... 36 V DC IN (X1) / 9.5 ... 36 V DC OUT (X2)

3 2 1

Assignment for 25-pin SUB-D connector

Signal

Pin 13 GroundPin 16 RESET CH1Pin 17 RESET CH2Pin 18 RESET CH3Pin 19 RESET CH4Socket housing Cable shield (protective

ground)

Tab. 5

Fig. 39 25-pin Sub-D connector X9Product Guide

Technical Data567.6.4 Connector Socket to Connector X9

Assignment for 37-pin SUB-D socket

Signal

Pin 16 GroundPin 25 RESET CH1Pin 26 RESET CH2Pin 27 RESET CH3Pin 28 RESET CH4Socket housing Cable shield (protective

ground)

Tab. 6

Fig. 40 37-pin Sub-D socket to connector X9microIFEM Piezo Module 4P3E/F/G/H

Appendix 578 Appendix

8.1 CE ComplianceThe microIFEM complies with the following Directives and Standards:2004/108/EC Directive on Electromagnetic Compatibility met by complying with the following standards: EN 61326-1:06 Electrical Equipment for Measurement, Control and Labora-

tory UseEMC Requirements

Area of application:Class A equipment:Equipment suitable for use in establishments other than domestic and those directly connected to a low voltage power supply network which supplies build-ings used for domestic purposes.Piezo Amplifier 4P3xThe charge inputs Q1 to Q4 are not EMC-protected.Because: The inputs must have high external impedance (>1013 Ohm) so that no

EMC filters can be used. The main sources of interference on the test bed are ground loop problems.

To suppress such interference, the shields of input cables at the amplifier end must not be connected to protective ground because the sensors are connected to the engine ground at the engine end. In this way, no effective HF shielding can be achieved.

The CE test was therefore carried out with no measurement cables and pressure transducers connected.Product Guide

Appendix58microIFEM Piezo Module 4P3E/F/G/H

Index 59Index

AAmbient temperature 51AVL SDC 13

CCalibration factor 32Calibration with dead-weight tester 35Cascading 16Cascading Package 14CE Conformity 57Coaxial cable 19Connector

Rear panel 54Continuous current load 51Current 52

DDimensions 51Double Range 9DRCO 52-53

Continuous 45Cyclic 45

Drift 49, 53Drift compensation 31, 53

EElectronic sensor data 32Error 52

FFrequency Response 53Front View 15

GGain

error 52factor 52

General information about calibration 24

HHum 53

IINDISIGNAL.INI 46Installation 21Insulation resistance 19, 51Isolated sensor 29

LLeakage current 53Linearity error 52LONG 45Lower cut-off frequency 53

MMeasurement range 52

NNoise 53

OOffset voltage 45Output

signal lift 53voltage selection 37, 43

Output offset 52Overload display 53

PPassword 46Polarity 52Power consumption 51Preselected maximum pressure 40Pressure drop 43Pressure transducer 15

RRear View 16

SSDB 13SDC 15Sensitivity 52Sensor

Calibration 35Data Connector 13Database 13Identification 13SDC data 32

SID 9, 13Signal

input 51Input range 25Output 52period 53

Storage temperature 51

TTemperature

drift 52sensitivity 52

Total OperatingCycles 33Time 33

Transmission Data 52

UUNIT ADDRESS 16Upper cut-off frequency 53

VVoltage 52

Output 16Supply 16, 51

WWeight 51Product Guide

Index60microIFEM Piezo Module 4P3E/F/G/H

AVL List GmbHHans-List-Platz 1, A-8020 Graz, AustriaPhone: +43 316 787-0, Fax: +43 316 787-400http://www.avl.com

AVL microIFEM Piezo Module 4P3E/F/G/HWarnings and Safety InstructionsGrouped Safety MessagesTable of Contents1 What You Should Know1.1 Safety Instructions1.2 Intended Purpose of Application1.3 About this Documentation1.3.1 Abbreviations and Glossary Terms1.3.2 Typographic Conventions1.3.3 Online Help1.3.4 We Want to Hear from You

2 General2.1 Applicability2.2 Application2.3 Basic Equipment2.4 Options2.4.1 External Voltage Supply2.4.2 Cascading Package

3 System Overview3.1 Front View3.2 Rear View3.3 Cascading

4 General Operating Instructions, Input Cable4.1 Cable Length, Cable Installation4.2 Insulation4.3 Cable Noise4.4 Electromagnetic Compatibility

5 IndiSignal Operating Software5.1 Installation5.2 IndiSignal View5.2.1 Toolbar5.2.2 Rack View5.2.3 Transducers and Calibration5.2.4 Status Bar

5.3 General Information About Calibration5.4 Settings 4P3x5.4.1 Piezo Amplifier Tab5.4.2 Calibration Info Tab

5.5 Functions5.5.1 Drift Compensation5.5.2 Calculation of the Calibration Factor5.5.3 Electronic Sensor Data TEDS (SDC)5.5.4 Calibration with Dead-Weight Tester (IndiSignal Stand-alone Only)

5.6 Measurement5.7 Offline Mode5.8 INDISIGNAL.INI5.8.1 INDISIGNAL.INI Settings

5.9 SENSORCAL.TXT

6 Maintenance7 Technical Data7.1 General7.2 Signal Input7.3 Signal Output7.4 Transmission Data7.5 Data of Other Functions7.6 Pin Assignment - Rear Panel7.6.1 Connector RS232 OUT (X7) / Socket RS232 IN (X8)7.6.2 Connectors 9.5 ... 36 V DC IN (X1) / 9.5 ... 36 V DC OUT (X2)7.6.3 Connector X97.6.4 Connector Socket to Connector X9

8 Appendix8.1 CE Compliance

Index

/ColorImageDict > /JPEG2000ColorACSImageDict > /JPEG2000ColorImageDict > /AntiAliasGrayImages false /CropGrayImages true /GrayImageMinResolution 300 /GrayImageMinResolutionPolicy /OK /DownsampleGrayImages true /GrayImageDownsampleType /Bicubic /GrayImageResolution 300 /GrayImageDepth -1 /GrayImageMinDownsampleDepth 2 /GrayImageDownsampleThreshold 1.50000 /EncodeGrayImages true /GrayImageFilter /DCTEncode /AutoFilterGrayImages true /GrayImageAutoFilterStrategy /JPEG /GrayACSImageDict > /GrayImageDict > /JPEG2000GrayACSImageDict > /JPEG2000GrayImageDict > /AntiAliasMonoImages false /CropMonoImages true /MonoImageMinResolution 1200 /MonoImageMinResolutionPolicy /OK /DownsampleMonoImages true /MonoImageDownsampleType /Bicubic /MonoImageResolution 1200 /MonoImageDepth -1 /MonoImageDownsampleThreshold 1.50000 /EncodeMonoImages true /MonoImageFilter /CCITTFaxEncode /MonoImageDict > /AllowPSXObjects false /CheckCompliance [ /None ] /PDFX1aCheck false /PDFX3Check false /PDFXCompliantPDFOnly false /PDFXNoTrimBoxError true /PDFXTrimBoxToMediaBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXSetBleedBoxToMediaBox true /PDFXBleedBoxToTrimBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXOutputIntentProfile (None) /PDFXOutputConditionIdentifier () /PDFXOutputCondition () /PDFXRegistryName () /PDFXTrapped /False

/Description > /Namespace [ (Adobe) (Common) (1.0) ] /OtherNamespaces [ > /FormElements false /GenerateStructure true /IncludeBookmarks false /IncludeHyperlinks false /IncludeInteractive false /IncludeLayers false /IncludeProfiles true /MultimediaHandling /UseObjectSettings /Namespace [ (Adobe) (CreativeSuite) (2.0) ] /PDFXOutputIntentProfileSelector /NA /PreserveEditing true /UntaggedCMYKHandling /LeaveUntagged /UntaggedRGBHandling /LeaveUntagged /UseDocumentBleed false >> ]>> setdistillerparams> setpagedevice

avl microifem piezomodule

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