WIKA R74.100 Mode D'emploi page 8

2. Commissioning ... / 3. Special conditions for ...
2. Commissioning, operation
DANGER!
Danger to life from missing instrument grounding
EN
With missing or incorrect grounding, there exists a risk of
dangerous voltages (leading to, for example, mechanical
damage, electrostatic charge or induction).
▶
Observe the special conditions (see chapter 3 "Special conditions for
use (X conditions)").
3. Special conditions for use (X conditions)
1) Design temperatures
Ambient temperature:
Model 73:
■
-40 ... +60 °C without food-compatible liquid damping
Model 74:
■
-40 ... +60 °C without food-compatible liquid damping
0 ... 60 °C with food-compatible liquid damping
Medium temperature: -200 ... +700 °C
Continuous load (1 year): Measuring range (EN 13190)
Short term (max. 24 h): Scale range (EN 13190)
Observe the surface temperature for ATEX application:
The permissible medium temperature does not only depend on
the instrument design, but also on the ignition temperature of the
surrounding gases, vapours or dust. Take both aspects into account.
8
Ground thermometer!
WIKA additional information models 73, 74 (ATEX)