Teledyne 2002 Marine Instruments User Manual


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149-072011 Model 2002 Vacuum Gauge Page 3 of 38
Table of Contents
1.
GENERAL INFORMATION......................................................................................................................................... 4
1.1. FEATURES ................................................................................................................................................................. 4
1.2. MODEL 2002 SENSORS.............................................................................................................................................. 4
1.3. MODEL 2002 CONTROL UNIT ................................................................................................................................... 4
1.4. SPECIFICATIONS........................................................................................................................................................ 5
2. INSTALLATION............................................................................................................................................................. 6
2.1. RECEIVING INSPECTION ............................................................................................................................................ 6
2.2. QUICK START............................................................................................................................................................ 6
2.3. TRANSDUCER INSTALLATION.................................................................................................................................... 6
2.4. CONTROL UNIT INSTALLATION................................................................................................................................. 7
2.5. INITIAL OPERATION .................................................................................................................................................. 7
3. FRONT PANEL OPERATION...................................................................................................................................... 8
3.1. OVERALL FUNCTIONAL DESCRIPTION....................................................................................................................... 8
3.2. RUN MODE .............................................................................................................................................................. 9
3.3. HIGH AND LOW SET POINT MODES......................................................................................................................... 10
3.4. CAL MODE............................................................................................................................................................. 10
3.5. GAS MODE............................................................................................................................................................. 12
3.6. UNITS MODE......................................................................................................................................................... 13
4. REAR PANEL DESCRIPTION................................................................................................................................... 14
4.1. REMOTE ZERO INPUT .............................................................................................................................................. 14
4.2. ANALOG OUTPUT.................................................................................................................................................... 14
4.3. TTL OUTPUTS......................................................................................................................................................... 16
4.4. POWER ENTRY MODULE ......................................................................................................................................... 16
5. THEORY OF OPERATION ........................................................................................................................................ 18
5.1. PIEZORESISTIVE SENSOR......................................................................................................................................... 18
5.2. PIRANI SENSOR ....................................................................................................................................................... 20
5.3. DUAL SENSOR OPERATION ..................................................................................................................................... 22
6. COMMUNICATIONS OPTION BOARD .................................................................................................................. 23
6.1. RS-232-E INTERFACE SPECIFICATIONS................................................................................................................... 23
6.2. INTERFACE CONNECTOR PIN ASSIGNMENTS FOR RS-232 ....................................................................................... 24
6.3. OPERATION OF THE SERIAL INTERFACE .................................................................................................................. 24
7. RELAY INTERFACE OPTION BOARD................................................................................................................... 28
7.1. RELAY BOARD SPECIFICATIONS ............................................................................................................................. 28
7.2. RELAY CONNECTOR PIN ASSIGNMENT ................................................................................................................... 28
8. 4-20 MA INTERFACE OPTION BOARD.................................................................................................................. 29
8.1. 4-20 MA INTERFERENCE CONNECTOR PIN ASSIGNMENTS....................................................................................... 29
8.2. OPERATION............................................................................................................................................................. 30
9. 0-10V INTERFACE OPTION BOARD...................................................................................................................... 31
10. TROUBLESHOOTING GUIDE.................................................................................................................................. 33
11. WARRANTY................................................................................................................................................................. 34
11.1.
WARRANTY REPAIR POLICY................................................................................................................................... 34
11.2. NON-WARRANTY REPAIR POLICY .......................................................................................................................... 34
12. DIAGRAMS AND DRAWINGS.................................................................................................................................. 35
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