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Installing/mounting
4.1 Basic safety notes
Note the following information for installation in a potentially explosive gas atmosphere:
The transmitter/local display must be installed in an enclosure of form B in accordance with
DIN 43729 or equivalent so that at least IP20 protection in accordance with IEC/EN 60529 is
guaranteed.
The enclosure must be suitable for the application and installed to meet the applicable
regulations.
Note the following information for installation in a potentially explosive dust atmosphere:
The transmitter/local display must be installed in a metal enclosure of form B in accordance with
DIN 43729 or equivalent so that at least IP6X protection in accordance with IEC/EN 60529 is
guaranteed.
The enclosure must be suitable for the application and installed to meet the applicable
regulations. Cable entries and dummy elements must meet the same requirements.
With dust deposits up to 5 mm, the maximum surface temperature on the outside of the
enclosure is 20 C higher than the maximum ambient temperature. Remove any dust deposits in
excess of 5 mm.
Note the following instructions for installation in mines:
The transmitter/local display must be installed in a metal enclosure which guarantees at least
IP6X protection in accordance with IEC/EN 60529.
Aluminum enclosure are not permitted in mines.
The enclosure must be suitable for the application and installed to meet the applicable
regulations.
Cable entries and dummy elements must meet the same requirements.
4.1.1.2
Safety information for installation in "Non-sparking nA/ec" and "Intrinsic safety ic"
Zones 2 and 22
General installation information
In the case of enclosures made of non-metallic materials or painted metal, electrostatic charging
must be prevented. At ambient temperatures ≥ 60 °C, heat-resistant cables with a temperature
rating of at least 20 K above ambient temperature must be used.
The enclosure must be suitable for the application and professionally installed. With dust
deposits up to 5 mm, the maximum surface temperature on the outside of the enclosure is 20 C
higher than the maximum ambient temperature. Remove any dust deposits in excess of 5 mm.
The distance between terminals, including the stripped core, must be a minimum of 3 mm from
each grounded metal part.
A test connection is only permissible if the area is safe or the supply/output circuit and the
utilized ammeter are intrinsically safe.
Note the following information for installation in a potentially explosive gas atmosphere:
In "Ex ic" areas, the transmitter/local display must be installed in an enclosure that ensures at
least IP20 degree of protection according to IEC 60529 and that is suitable for the application
and is installed professionally.
In "Ex nA" and "Ex ec" areas, the transmitter/local display must be installed in an enclosure that
ensures at least IP54 degree of protection according to IEC 60079-0. In addition, the enclosure
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SITRANS TH100/TH100Slim/TH320/TH420/TR320/TR420/TF320/TF420
Compact Operating Instructions, 07/2021, A5E41865021-AE
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