WIKA TFS35 - Manual (Page 8)

8
GB
11610115.03 11/2012 GB/D/F/E
WIKA operating instructions model TFS35
3. Specifications
„ Reset Switching Temperature (RST)
The reset switching temperature in bimetal temperature switches is typically 15 ... 30 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 ambient is
high enough; since otherwise the switch cannot cool back down to the reset switching
temperature and thus the equipment will not be able to return to its normal state.
„ Ambient temperature
-50 ... +125 °C
Note:
With small insertion lengths there is a possibility that the temperature at the connector
can reach impermissibly high values. This absolutely must be taken into account in the
design of the measuring point.
Vibration resistance
Depending on the mounting situation, the medium, temperature and insertion length, the
vibration resistance is up to 10 g.
Shock resistance
Up to 100 g, depending on the mounting situation, medium and temperature
Working pressure
max. 100 bar, depending on the medium, temperature and thermowell design
Max. switching voltage
Resistive load (cos ϕ = 1):
„ AC 48 V, 3 A
„ DC 24 V, 3 A
„ DC 12 V, 4 A
Contact resistance
< 50 mΩ
Dielectric strength
AC 1,500 V, 50 Hz
between electrical connections and housing
Electrical connection
„ Rectangular connector per DIN EN 175301-803, Form A (replacement for DIN 43650)
„ Connector AMP Junior Power Timer, contacts gold-plated
„ FASTON blade terminals 6.3 x 0.8 mm
Other connections on request.