Specifications - WIKA TFS135 Mode D'emploi

8. Specifications

8. Specifications
Specifications
EN
Temperature ranges
Nominal Switching
Temperature (NST)
Switch point accuracy
Reset Switching
Temperature (RST)
Ambient temperature
- Rectangular connector
per EN 175301-803
- Circular connector
M12 x 1
Operating pressure
20
50 ... 130 °C
Note:
The nominal switching temperature can be
selected in steps of 5 K. It is preset on delivery and
cannot be changed.
±5 K
Typically 15 ... 40 K below the switching
temperature
To ensure a safe reset of the switch at low
switching temperatures, care must be taken
that the temperature difference between the
measuring point and environment is high
enough; since otherwise the switch cannot cool
back down to the reset switching temperature
and thus the instrument will not be able to
return to its normal state.
The maximum permissible ambient temperature
depends on the electrical connection.
Note:
Due to short installation length there is a risk that
the temperature at the connector will rise up to an
inadmissibly high value. This absolutely must be
taken into account when designing the measuring
point. The temperature at the connector must not
exceed the above mentioned temperature range.
-30 ... +85 °C
-25 ... +55 °C
Max. 50 bar
WIKA operating instructions model TFS135