Manual Conventions; Warnings, Cautions And Notes - GasTech D-Guard2 Operator's Manual

Manual Conventions

To aid with the process of bringing attention to key points, graphical notices are used in this manual. These
notices are graded based upon the consequence of ignoring or incorrectly applying the information given.
Warning.
Significant risk to health and safety with the possibility of serious injury or death.
Caution. Possibility of unsafe operation of D-Guard
Ex Certification of D-Guard
Note. Additional information is provided to assist with understanding of detector
operation, configuration, calibration or maintenance.

1. Warnings, Cautions and Notes

For safety reasons, D-Guard
trained personnel. Reading and understand this instruction manual completely is essential before installing,
operating or servicing this equipment. Failure to install or operate this instrument in accordance with
instructions contained in this manual may result in invalidation of the conditions of certification and additionally
create hazardous operating conditions.
2
D-Guard Carries the following Group II Hazardous area certifications :-
Ex ia IIC T4 Ga (-20°C ≤ Ta ≤ +70°C)
II 1G
U = 28V, I = 93mA, P
i i
Includes: All Electro-Chemical sensor versions covering both standard ranges and user specified types.
Excludes: Infra-Red types 65-1080-LEL, 65-1080-CH4, 65-1080-CO2
Ex ia IIB T4 Ga (-20°C ≤ Ta ≤ +55°C)
II 1G
U = 28V, I = 93mA, P
i i
Includes: Infra-Red types 65-1080-LEL, 65-1080-CH4, 65-1080-CO2.
Includes: All Electro-Chemical sensor versions covering both standard ranges and user specified types.
2
D-Guard Carries the following Group I Hazardous area certifications, applicable to all product versions,
Ex ia I Ma (-20°C ≤ Ta ≤ +55°C)
I M1
U = 22V, C = 0, L
i i i
Includes: Infra-Red types 65-1080-LEL, 65-1080-CH4, 65-1080-CO2.
Includes: All Electro-Chemical sensor versions covering both standard ranges and user specified types.
2
and connected equipment may be invalidated.
2
must be installed, operated and serviced only by competent and appropriately
= 0.7W, C = 0, L = 0.
i i i
= 0.7W, C = 0, L = 0.
i i i
= 0.
7
2
and connected equipment.
HART Communication Port (where fitted):
U = 28V, I = 93mA, P = 700mW, C
i i i
U = 28V, I = 93mA, P = 700mW.
o o o
.
HART Communication Port (where fitted):
U = 28V, I = 93mA, P = 700mW, C
i i i
U = 28V, I = 93mA, P = 700mW.
o o o
HART Communication Port (where fitted):
U = 28V, C = 0, L = 0.
i i i
U = 22V, I / P as per power supply input.
o o o
2
D-Guard
= 0, L = 0.
i i
= 0, L = 0.
i i