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Contents
TABLE OF CONTENTS
1.
PRODUCT DESCRIPTION .............................................................................................................................1
1.1 GENERAL........................................................................................................................................................1
1.2 PRODUCT CONFIGURATION........................................................................................................................1
1.3 THEORY OF OPERATION..............................................................................................................................1
1.4 MODES OF OPERATION................................................................................................................................1
1.4.1 SENTRY INTERFACE..............................................................................................................................1
1.4.2 MODBUS OPERATION............................................................................................................................2
1.4.3 ANALOG OPERATION ............................................................................................................................2
1.4.4 REMOTE SENSOR AND DISPLAY (APPENDIX D)................................................................................2
1.4.5 REMOTE ALARM RESET (DIGITAL INPUT) (Figure 3-7) ......................................................................2
1.4.6 OPTIONAL INTEGRAL RELAYS.............................................................................................................2
MECHANICAL ............................................................................................................................................................2
1.4.7 ENCLOSURE ...........................................................................................................................................2
1.4.8 TRANSMITTER ELECTRONICS .............................................................................................................4
1.4.9 SENSOR ASSEMBLY..............................................................................................................................4
1.5 INTERCONNECT WIRING..............................................................................................................................4
1.6 POWER REQUIREMENTS .............................................................................................................................4
2. CAUTIONS & WARNINGS .............................................................................................................................5
2.1 INTRODUCTION .............................................................................................................................................5
2.2 IT MODULES - GENERAL...............................................................................................................................5
2.3 WIRING............................................................................................................................................................5
3. INSTALLATION ..............................................................................................................................................7
3.1 SENSOR MODULE LOCATIONS....................................................................................................................7
3.2 WIRING............................................................................................................................................................7
3.2.1 ANALOG 4-20 mA OPERATION..............................................................................................................7
3.2.2 MODBUS OPERATION USING RS-485 CONNECTION ........................................................................7
3.2.3 SENTRY OPERATION USING SMC SENTRY CONNECTION..............................................................7
3.2.4 GENERAL ................................................................................................................................................7
3.3 ENCLOSURE INSTALLATION........................................................................................................................8
3.4 TRANSMITTER AND SENSOR INSTALLATION............................................................................................8
3.5 MODULE ADDRESS SWITCH......................................................................................................................10
4. OPERATION .................................................................................................................................................17
4.1 INTRODUCTION – HUMAN-MACHINE INTERFACE SYSTEM ...................................................................17
4.2 HUMAN-MACHINE INTERFACE ..................................................................................................................17
4.3 MAIN MENU...................................................................................................................................................18
4.4 CONFIGURE SET-POINTS...........................................................................................................................19
4.5 MAINTENANCE FUNCTIONS.......................................................................................................................22
5. CALIBRATION..............................................................................................................................................24
5.1 CALIBRATION FREQUENCY .......................................................................................................................24
5.2 CALIBRATION PREPARATION....................................................................................................................24
5.2.1 CALIBRATION GAS DELIVERY METHODS.........................................................................................24
5.3 CALIBRATION PROCEDURE.......................................................................................................................24
5.3.1 SENSOR EXPOSURE TO GAS.............................................................................................................25
6. SERVICE .......................................................................................................................................................26
6.1 SENSOR MODULE CONFIGURATION ........................................................................................................26
6.2 ENCLOSURE REPLACEMENT ....................................................................................................................26
6.3 TRANSMITTER REPLACEMENT .................................................................................................................27
6.4 SENSOR REPLACEMENT............................................................................................................................27