GasTech D-Guard2 Operator's Manual page 5

14.1.2 Detector Fault - Detector Over-Range ............................................................................................ 48
14.1.3 Detector Fault - Detector Under-Range .......................................................................................... 48
14.1.4 Detector Fault - Upper Operating Temperature ............................................................................ 49
14.1.5 Detector Fault - Lower Operating Temperature ............................................................................ 49
14.1.6 Detector Fault - Sensor Presence Failure ....................................................................................... 49
14.1.7 Detector Fault - Low Sensor Sensitivity .......................................................................................... 49
14.2. F L A I
AULT OG ND NFORMATION
14.2.1 Detector Fault Log .......................................................................................................................... 49
14.2.2 Detector Information Screen .......................................................................................................... 49
14.2.3 Resetting the Detector Life Counter ............................................................................................................ 49
14.2.4 Calibration Fault ............................................................................................................................. 50
14.2.5 Internal Parameter Storage Fault ................................................................................................... 50
15. ALARM INDICATION.............................................................................................................................. 50
15.1.1 Warn Alarm Indication ................................................................................................................... 50
15.1.2 Danger Alarm Indication ................................................................................................................ 50
15.1.3 Latched Alarm Indication................................................................................................................ 50
15.1.4 Resetting From Alarm State ........................................................................................................... 50
15.1.5 Temporarily Silencing An Alarm ..................................................................................................... 51
15.1.6 Clearing An Alarm State ................................................................................................................. 51
15.1.7 Setting The display Heading (Banner) ............................................................................................ 51
16. CONNECTING A HART FIELD COMMUNICATOR ..................................................................................... 52
17. DETECTOR MAINTENANCE .................................................................................................................... 53
17.1. V I .................................................................................................................................... 53
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 ............................................................................................... 54
17.3.2 Replacing the Sensor ...................................................................................................................... 54
17.4. G D R
ENERAL ETECTOR
17.5. D D-G
ISPOSAL OF UARD
18. APPENDIX A: ......................................................................................................................................... 56
18.1. O C S
UTPUT URRENT IGNAL
18.1.1 Loop Resistance - Group I D-Guard
18.1.2 Loop Resistance - Group I D-Guard
18.1.3 Loop Resistance - Group II D-Guard
18.1.4 Loop Resistance - Group II D-Guard
19. APPENDIX B: ......................................................................................................................................... 58
19.1. D D
ISABLING THE ISPLAY
20. APPENDIX C: ......................................................................................................................................... 59
20.1. CHEMICAL COMPATIBILITY ................................................................................................................... 59
21. APPENDIX D: ......................................................................................................................................... 60
21.1. C S - T
ROSS ENSITIVITY
21.2. C S - I
ROSS ENSITIVITY
22. APPENDIX E: ......................................................................................................................................... 61
22.1. E E
NVIRONMENTAL FFECTS ON
22.2. T .......................................................................................................................................... 61
EMPERATURE
22.3. P ................................................................................................................................................. 61
RESSURE
22.4. H ................................................................................................................................................ 61
UMIDITY
23. APPENDIX F: ......................................................................................................................................... 62
23.1. S M M .................................................................................................................................. 62
YSTEM ENU AP
24. APPENDIX G: ......................................................................................................................................... 63
S ....................................................................................................... 49
CREENS
) I ............................................................................................................ 53
NSPECTIONS
.................................................................................................................. 54
........................................................................................................................ 55
EPAIR
2
C ......................................................................................................... 55
OMPONENTS
- T L R
OTAL OOP ESISTANCE VS
2
With Backlight Disabled - loop at 22mA ............................... 56
2
With Backlight Enabled - loop at 22mA ................................ 56
2
With Backlight Disabled - loop at 22mA .............................. 57
2
With Backlight Enabled - loop at 22mA ............................... 57
B .............................................................................................................. 58
ACKLIGHT
S ............................................................................................................. 60
OXIC ENSORS
-R S ...................................................................................................... 60
NFRA ED ENSORS
D P
ETECTOR ERFORMANCE
2
P S V ............................................... 56
OWER UPPLY OLTAGE
.................................................................................. 61
2
D-Guard