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Summary of Contents for Kistler 7614CG1
- Page 1 Instruction Manual Cylinder Pressure Sensor Type 7614CG1/CG2 ä 7614CG_002-663e-07.22...
- Page 3 Information in this document is subject to change without notice. Kistler reserves the right to change or improve its products and make changes in the content without obligation to notify any person or organization of such changes or improvements.
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Page 4: Table Of Contents
Content Content Introduction ............................3 Disposal instructions for electrical and electronic equipment ..........4 Description............................5 Introduction ............................5 Dimensions Type 7614CG1/CG2 ....................6 Working principle ..........................7 Installation ............................9 General ............................9 Recommended Mounting ....................... 10 3.2.1 Sealing ..........................10 3.2.2... -
Page 5: Introduction
It will help you with the installation, maintenance, and use of this product. To the extent permitted by law Kistler does not accept any liability if this instruction manual is not followed or products other than those listed under Accessories are used. -
Page 6: Disposal Instructions For Electrical And Electronic Equipment
Do not discard old electronic instruments in municipal trash. For disposal at end of life, please return this product to an authorized local electronic waste disposal service or contact the nearest Kistler Instrument sales office for return instructions. Page 4... -
Page 7: Description
6.5 mA (at dynamic pressure 0 bar). The output is ac-coupled, so static pressure measurements are not possible. Type 7614CG1 has a time constant >10 s and is recommended for medium speed engines. Type 7614CG2 has a time constant >110s and is recommended for low speed engines. -
Page 8: Dimensions Type 7614Cg1/Cg2
Cylinder Pressure Sensor, Type 7614CG1/CG2 2.2 Dimensions Type 7614CG1/CG2 Fig 1: Dimensions of Type 7614CG1/CG2 Page 6 7614CG_002-663e-07.22... -
Page 9: Working Principle
Description 2.3 Working principle The cylinder pressure is acting on the diaphragm. The diaphragm converts the pressure in proportional force on the sensor element. The piezoelectric sensor element converts the force into a charge. The charge is converted by a charge amplifier into a current. The complete measuring chain is designed for easy operation and very long life time. - Page 10 Cylinder Pressure Sensor, Type 7614CG1/CG2 Example of output signal from 2- and 4-stroke engine with signal span 12.5 mA time upper border bias current low er border signal 4-stroke signal 2-stroke Fig. Example of sensor output signal for 2- and 4-stroke engine Page 8 7614CG_002-663e-07.22...
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Page 11: Installation
10 … 15 mm distance from the combustion chamber Sensor must be tightened according the mounting torque of 25 N·m The cable must not be twisted during installation/ removal of the sensor If there are any question regarding installation please contact Kistler. 7614CG_002-663e-07.22 Page 9... -
Page 12: Recommended Mounting
Cylinder Pressure Sensor, Type 7614CG1/CG2 3.2 Recommended Mounting Fig. 4a: Mounting bore for conical sealing Fig. 4b: Mounting bore for shoulder sealing Mounting torque: 25 ±5 N·m Mounting torque: 25 ±5 N·m 3.2.1 Sealing A leak proof mounting of the sensor is essential to prevent overheating of the sensor by leaking hot gases. -
Page 13: Installing The Charge Amplifier
3.2.4 Cable between charge amplifier and data acquisition unit We recommend using cable type 1700B69A…, which is available in different lengths (for more detailed infor- mation see datasheet of Type 7614CG1/CG2, doc. no. 003-044). This cable can be made by the user. Use a shielded cable;... -
Page 14: Electric Block Diagram
Cylinder Pressure Sensor, Type 7614CG1/CG2 3.2.5 Electric block diagram 3.2.6 Pin connections Connector 1 Exct GND 2 don’t connect 3 don’t connect 4 don’t connect 5 Signal output 6 don’t connect 7 don’t connect 8 +Exct (18 … 32V) Fig 5: View on M12 connector of amplifier 3.2.7 Mounting tools... -
Page 15: Operation
Operation 4. Operation After the starting up the engine check for any gas leakage at once. If there is any gas leaking out, stop the engine and rectify the mounting to achieve a complete sealing (see chapter 5). Warning: If the sensor is mounted in an indicator valve: When the engine is operating do not open the indicator valve for more than one working circle as otherwise the sensor may be overheated. -
Page 16: Maintenance
Cylinder Pressure Sensor, Type 7614CG1/CG2 5. Maintenance After installation, the sensor needs no maintenance. Do not use a steam or high-pressure cleaner for cleaning purposes. Never use wire brushes, screw drivers or any other sharp pointed instrument for cleaning the diaphragm. -
Page 17: Trouble Shooting
Trouble shooting 6. Trouble shooting In case the sensor does not give a proper output signal, please disconnect the cable for a couple of seconds and connect it again. The amplifier works with a so-called time constant to ensure a reliable signal without drift, because of this time constant it can happen that the sensor is out of range for a short while.
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