Siemens SITRANS T Series - Page 29

WARNING
Use in hazardous area
Risk of explosion.
• Only use equipment that is approved for use in the intended hazardous area and labeled
accordingly.
• Do not use devices that have been operated outside the conditions speci󹪝ed for hazardous
areas. If you have used the device outside the conditions for hazardous areas, make all Ex
markings unrecognizable on the nameplate.
WARNING
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device or its components have already been operated in non-intrinsically safe circuits or
the electrical speci󹪝cations have not been observed, the safety of the device is no longer
ensured for use in hazardous areas. There is a risk of explosion.
• Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe
circuit.
• Observe the speci󹪝cations for the electrical data on the certi󹪝cate and/or in Technical data
(Page 193).
WARNING
Incorrect mounting of temperature sensors on SITRANS TF
Risk of explosion in hazardous areas. If you attach a temperature sensor to an explosion-proof
SITRANS TF enclosure via the cable inlet, you must observe the special conditions.
• Observe the ambient temperature, the type of protection and the electrical data in the
certi󹪝cate of the SITRANS TF device and/or in the chapter Technical data (Page 193).
• The medium temperature in󹪞uences the ambient temperature of the SITRANS TF device. If
necessary, reduce the ambient temperature for the SITRANS TF. Refer to the information on
the nameplate and/or in Technical data (Page 193).
• The installation of a temperature sensor may increase the volume for the pressure-resistant
enclosure.
• Arrange to have the installation of a temperature sensor on a SITRANS TF evaluated by an
accredited approval body.
Safety notes
3.3 Use in hazardous areas
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB 29