Service and maintenance
10
10.1 Basic safety notes
Note
The device is maintenance-free.
10.1.1 Maintenance
The device is maintenance-free. However, a periodic inspection according to pertinent directives
and regulations must be carried out.
An inspection can include, for example, check of:
• Ambient conditions
• Seal integrity of the process connections, cable entries, and cover
• Reliability of power supply, lightning protection, and grounds
10.1.2 SITRANS TF
WARNING
Use of a computer in a hazardous area
If the interface to the computer is used in the hazardous area, there is a risk of explosion.
• Ensure that the atmosphere is explosion-free (hot work permit).
WARNING
Dust layers above 5 mm
Risk of explosion in hazardous areas.
Device may overheat due to dust build up.
• Remove dust layers in excess of 5 mm.
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB 177
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