D-Guard
2
2
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
AULT
L
OG
A
ND
I
NFORMATION
S
CREENS
....................................................................................................... 49
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
ISUAL
I
NSPECTION
.................................................................................................................................... 53
17.2.
H
ANDS
-O
N
(D
ETAILED
)
I
NSPECTIONS
............................................................................................................ 53
17.3.
G
AS SENSING CELL REPLACEMENT
.................................................................................................................. 54
17.3.1
Removing the Detector Main Board ............................................................................................... 54
17.3.2
Replacing the Sensor ...................................................................................................................... 54
17.4.
G
ENERAL
D
ETECTOR
R
EPAIR
........................................................................................................................ 55
17.5.
D
ISPOSAL OF
D-G
UARD
2
C
OMPONENTS
......................................................................................................... 55
18.
APPENDIX A: ......................................................................................................................................... 56
18.1.
O
UTPUT
C
URRENT
S
IGNAL
-
T
OTAL
L
OOP
R
ESISTANCE VS
P
OWER
S
UPPLY
V
OLTAGE
............................................... 56
18.1.1
Loop Resistance - Group I D-Guard
2
With Backlight Disabled - loop at 22mA ............................... 56
18.1.2
Loop Resistance - Group I D-Guard
2
With Backlight Enabled - loop at 22mA ................................ 56
18.1.3
Loop Resistance - Group II D-Guard
2
With Backlight Disabled - loop at 22mA .............................. 57
18.1.4
Loop Resistance - Group II D-Guard
2
With Backlight Enabled - loop at 22mA ............................... 57
19.
APPENDIX B: ......................................................................................................................................... 58
19.1.
D
ISABLING THE
D
ISPLAY
B
ACKLIGHT
.............................................................................................................. 58
20.
APPENDIX C: ......................................................................................................................................... 59
20.1.
CHEMICAL
COMPATIBILITY ................................................................................................................... 59
21.
APPENDIX D: ......................................................................................................................................... 60
21.1.
C
ROSS
S
ENSITIVITY
-
T
OXIC
S
ENSORS
............................................................................................................. 60
21.2.
C
ROSS
S
ENSITIVITY
-
I
NFRA
-R
ED
S
ENSORS
...................................................................................................... 60
22.
APPENDIX E: ......................................................................................................................................... 61
22.1.
E
NVIRONMENTAL
E
FFECTS ON
D
ETECTOR
P
ERFORMANCE
.................................................................................. 61
22.2.
T
EMPERATURE
.......................................................................................................................................... 61
22.3.
P
RESSURE
................................................................................................................................................. 61
22.4.
H
UMIDITY
................................................................................................................................................ 61
23.
APPENDIX F: ......................................................................................................................................... 62
23.1.
S
YSTEM
M
ENU
M
AP
.................................................................................................................................. 62
24.
APPENDIX G: ......................................................................................................................................... 63
Summary of Contents for D-Guard2
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Page 68: ...D Guard2 65 25 APPENDIX H Product Certificates 25 1 IECEx Product Certificate ...
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Page 72: ...D Guard2 69 25 2 ATEX Product Certificate ...
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