Installation In Hazardous Locations; Us And Canadian Requirements; European Requirements; Category 1 (Zone 0) - Vaisala HUMICAP HMT360 SERIES User Manual
Humidity and temperature transmitters
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Also See for HUMICAP HMT360 SERIES:
- User manual (114 pages) ,
- Safety manual (94 pages) ,
- User manual (113 pages)
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User's Guide ______________________________________________________________________
NOTE
NOTE
36 ___________________________________________________________________ M010056EN-I
Installation in Hazardous Locations
US and Canadian Requirements
USA (FM): Wiring for intrinsically safe operation is shown in
B, Wiring for Intrinsically Safe Operation, FM, on page
Canada (CSA): Wiring for intrinsically safe operation is shown in
Appendix C, Wiring for Intrinsically Safe Operation, CSA, on page
European Requirements
CATEGORY 1 (Zone 0)
HMT360 has to be connected to Exia-certified associated apparatus with
galvanic isolation, gas group IIB or IIC.
If both analog outputs are in use, the Ch 1 (-) and Ch 2 (-) must be short
circuited (see
Figure 19 on page
CATEGORY 2 or 3 (Zone 1 or 2)
HMT360 has to be connected either to a Zener barrier or galvanic isolator
If both analog outputs are in use with a galvanic isolator, the Ch 1 (-) and
Ch 2 (-) must be short circuited (see
Figure 17 on page 39
galvanic isolators and Zener barrier connections (only Ch 1 connected).
41).
Figure 19 on page
and
Figure 18 on page 40
Appendix
89.
41).
present examples of
91.
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