WIKA 55 - Page 8

EN
11583747.07 12/2021 EN/DE/FR/ES
8 WIKA additional operating instructions model 55 (ATEX)
Marking Designation Meaning
T85 °C ...
T450 °C
Maximum surface
temperature
Maximum surface temperature
The actual maximum surface temperature
depends not on the equipment itself, but
mainly on the operating conditions.
Gb Equipment Protection
Level (EPL)
Potential ignition sources that are eective
or may become eective during normal
operation and expected malfunction
Db
X Specic conditions
of use see operating
instructions
Ambient temperature with special range
Specic conditions of use apply.
2. Commissioning, operation
DANGER!
Danger to life from missing instrument grounding
With missing or incorrect grounding, there exists a risk of
dangerous voltages (leading to, for example, mechanical
damage, electrostatic charge or induction).
▶
Ground thermometer!
Observe the special conditions (see chapter 3 “Special conditions for
use (X conditions)”, point 4).
1. Safety / 2. Commissioning, operation