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 mircoswitch.
The temperature is only sensed by
the themperature sensor.
When the actual temperature exceeds limit
temperature the mircoswitch opens or
closes the electric ciruit
by the sensor system.
Safety temperature limiter with
Change over contact.
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
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.