Construction thermostat JUMO ATHF

Immersion thermostat model series ATH

Controlling thermostats and monitoring thermal processes. ATH model range devices are available as temperature controllers TR, temperature limiters TW, safety
temperature monitors STW (STB) and safety temperature limiters STB. In the event of any faults, the STB puts the monitored system into a reliable
state. • Setup thermostats work according to the principle of fluid expansion; a micro switch is used as switching element.
Self-monitoring with the safety temperature limiter STB
and the safety temperature monitor STW (STB)
If the measuring systems is destroyed, i.e if the expansion liquid escapes,
the pressure in the diaphragm drops with the STB and STW (STB), and the circuit
remains open. Unlocking is no longer possible. When the sensor
cools to a temperature under approx. -20°C, the circuit is also opened, when
the temperature rises above approx. -20°C, the STB must first be unlocked
manually via a re-activation button. STW (STB) reactivation takes place
automatically.
Reactivation lock with safety temperature limiter STB
If the pending temperature exceeds the set
limit value on the temperature sensor, the circuit is opened and the micro switch is mechanically locked.
Once the critical temperature remains lower that approx. 10% of the scale range
(approx. 15% with a limit value setting > +350°C), the micro switch can be unlocked
manually.

• Screw connection with counter nut M 18 x 1 and long-distance cable outlet on housing spigot
• Long-distance cable: 1000 mm.
• Sensor: 6 x 107 mm
• Switching differential: 3-4%
• Max. switching current: AC 230 V/10 amp.
• Control range: 0-100 °C