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1 About this manual
Temperature range
MID:
-20°C bis +55°C
18
Nach ATEX:
-40°C bis +80°C
Notice
In case of doubt, the limited range of the MID applies: -25°C to +55°C
(optional -40° bis +55°C)
1.4 Inspection and maintenance work
1.4.1
General information
Explosion-proof electrical control units must be regularly maintenanced. The time
intervals of this maintenance depend on the operating and environmental condi-
tions.
Notice
We recommend at least one check per year (e.g. in connection with the an-
nual calibration).
This chapter provides information on how you can extend the service life of the de-
vice through maintenance. You can only protect the device from premature wear if
you adhere to the maintenance interval described here.
Danger
Work on live electrical equipment is generally prohibited in hazardous ar-
eas (except for intrinsically safe circuits).
In special cases, work can also be carried out on live electrical equipment in haz-
ardous areas if it is ensured that no potentially explosive atmosphere is present.
This may only be done with explosion-proof, approved measuring instruments.
Manual USM GT400 · EN10 · May 2021
(Umgebungstemperatur, für eichamtliche Messung)
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