The operation of the
surfacemounting thermostat relies
upon phenomenon of liqudia expansion.
The volume of a liquid filled
sensor system(consisting of sensor,
capillary tubing and membrane)varies with
varying temperatures. The resulting
membrane displacement actuates the
The temperature is only sensed by the
When the actual temperature exceeds
limit temperature the mircoswitch opens or
closes the electric ciruit by the
Safety temperature limiter with Change over
When the limit temperature is exceeded,
the electric circuit is opened (or closed)
and the microswitch is mechanically locked.
After the temperature has returned down to
the set limit the microswitch can be
unlocked manually, only.
Temperature Monitor with Automatic Reset
After the temperature has returned
down to the hysteresis loop´s limit, the
mirco-switch sets the circuit to
Cased mircoswitch with change over
contact and automatic reset..
Cased microswitch with change over
contact and manual reset.