Explosion proof temperature controller and limiter STAHL
The liquid filled measuring system changes its volume as a function of temperature changes. A changeover contact therefore is actuated by mechanical transmission.
In case that the setpoint is overflow the controller switches off. After the temperature drops below the setpoint the temperature controller can be reset manually.
When the system leaks the temperature controller remains in the off-position. When the sensor temperature drops below the minimum the circuit opens but closes again when the temperature rises.
Explosion protection CENELEC, IEC
Can be used in Zone 1 and Zone 2, in Zone 21 and Zone 22
Liquid filled measuring system
Continuous interruption when setpoint overflow (manual reset)
Continuous interruption when measuring system is leaking
Expanded security in accordance with DIN 3440
Enclosure made of glass fibre reinforced polyester resin
