Electrical Connection Values; Use In Methane Atmospheres - WIKA TC82-F Zusatzbetriebsanleitung

3. Commissioning, operation

Electrical connection values

Variant 1
■
U = DC 30 V (depending on the operating system)
max

Use in methane atmospheres

As a result of the higher Minimum Experimental Safe Gap (MESG) and Minimum
Ignition Current (MIC) of methane, the instruments can also be used in hazardous gas
atmospheres caused by this.
Variant 2
■
U = DC 30 V
max
P = 2 W
max
Variant 3
■
U = depending on the transmitter/digital display
max
P = in the case: depending on the transmitter/digital display
max
3.7 Temperature carry-over from the process
Prevent any heat reflux from the process!
Observe the special conditions (see chapter 4 "Special conditions for use (X conditions)").
3.8 Thread gap
For fitting, the following permitted thread gaps for electrical equipment for gas hazardous
areas must be maintained:
Thread gap for parallel threads (IEC/EN 60079-1, table 4):
■
Case volumes ≤ 100 cm³: ≥ 5 mm
Case volumes > 100 cm³: ≥ 8 mm
There must be at least 5 threads engaged
Thread gap for tapered threads (IEC/EN 60079-1, table 5):
■
on each component ≥ 5
There must be at least 4.5 threads engaged
WIKA additional operating instructions TC82, TC83, flameproof enclosure (Ex d)
AI_14302226_TC82_TC83_ATEX_Ex-d_en_de_fr_es.indd 13 AI_14302226_TC82_TC83_ATEX_Ex-d_en_de_fr_es.indd 13
EN
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18.01.2023 07:54:48 18.01.2023 07:54:48