GasTech D-Guard2S Operator's Manual page 5

14.1.2 Detector Fault - Detector Over-Range ............................................................................................ 47
14.1.3 Detector Fault - Detector Under-Range .......................................................................................... 47
14.1.4 Detector Fault - Upper Operating Temperature ............................................................................ 48
14.1.5 Detector Fault - Lower Operating Temperature ............................................................................ 48
14.1.6 Detector Fault - Sensor Presence Failure ....................................................................................... 48
14.1.7 Detector Fault - Low Sensor Sensitivity .......................................................................................... 48
14.2. F L A I
AULT OG ND NFORMATION
14.2.1 Detector Fault Log .......................................................................................................................... 48
14.2.2 Detector Information Screen .......................................................................................................... 48
14.2.3 Resetting the Detector Life Counter ............................................................................................................ 48
14.2.4 Calibration Fault ............................................................................................................................. 49
14.2.5 Internal Parameter Storage Fault ................................................................................................... 49
15. ALARM INDICATION.............................................................................................................................. 49
15.1.1 Warn Alarm Indication ................................................................................................................... 49
15.1.2 Danger Alarm Indication ................................................................................................................ 49
15.1.3 Latched Alarm Indication................................................................................................................ 49
15.1.4 Resetting From Alarm State ........................................................................................................... 49
15.1.5 Temporarily Silencing An Alarm ..................................................................................................... 50
15.1.6 Clearing An Alarm State ................................................................................................................. 50
16. CONNECTING A HART FIELD COMMUNICATOR ..................................................................................... 51
17. DETECTOR MAINTENANCE .................................................................................................................... 52
17.1. V I .................................................................................................................................... 52
ISUAL NSPECTION
17.2. H -O (D
ANDS N ETAILED
17.3. G
AS SENSING CELL REPLACEMENT
17.3.1 Removing the Detector Main Board ............................................................................................... 53
17.3.2 Replacing the Sensor ...................................................................................................................... 53
17.4. G D R
ENERAL ETECTOR
17.5. D D-G
ISPOSAL OF UARD
18. APPENDIX A: ......................................................................................................................................... 55
18.1. O C S
UTPUT URRENT IGNAL
18.1.1 Loop Resistance - D-Guard
18.1.2 Loop Resistance - D-Guard
19. APPENDIX B: ......................................................................................................................................... 56
19.1. R B S
ELAY OARD AND OUNDER
19.1.1 Relay Board Functionality ............................................................................................................... 56
19.1.2 Table of Functions (identified by silk screen legend on relay board and photo annotations) ........ 57
19.2. R B C
ELAY OARD ONNECTIONS
19.2.1 Current Loop Connection Scheme ................................................................................................... 58
19.2.2 Stand-Alone Connection Scheme .................................................................................................... 58
20. APPENDIX C: ......................................................................................................................................... 59
20.1. D D
ISABLING THE ISPLAY
21. APPENDIX D: ......................................................................................................................................... 60
21.1. CHEMICAL COMPATIBILITY ................................................................................................................... 60
22. APPENDIX E: ......................................................................................................................................... 61
22.1. C S - T
ROSS ENSITIVITY
22.2. C S - I
ROSS ENSITIVITY
23. APPENDIX F: ......................................................................................................................................... 62
23.1. E E
NVIRONMENTAL FFECTS ON
23.2. T .......................................................................................................................................... 62
EMPERATURE
23.3. P ................................................................................................................................................. 62
RESSURE
23.4. H ................................................................................................................................................ 62
UMIDITY
S ....................................................................................................... 48
CREENS
) I ............................................................................................................ 52
NSPECTIONS
.................................................................................................................. 53
........................................................................................................................ 54
EPAIR
2
C ......................................................................................................... 54
OMPONENTS
- T L R
OTAL OOP ESISTANCE VS
2
With Backlight Disabled - loop at 22mA ............................................ 55
2
With Backlight Enabled - loop at 22mA ............................................. 55
O . ......................................................................................................... 56
PTIONS
....................................................................................................................... 58
B .............................................................................................................. 59
ACKLIGHT
S ............................................................................................................. 61
OXIC ENSORS
-R S ...................................................................................................... 61
NFRA ED ENSORS
D P
ETECTOR ERFORMANCE
2
P S V ............................................... 55
OWER UPPLY OLTAGE
.................................................................................. 62
2
D-Guard