Jumo ATHs-1 surface-mount immersion thermostat, immersion tube 8x120mm, stainless steel

• The ATH series devices are available as temperature controllers (TR), temperature monitors (TW), safety temperature monitors (STW/STB), and safety temperature limiters (STB). In the event of a malfunction, the STB puts the monitored system into a safe operating state. The thermostats operate on the principle of liquid expansion; a microswitch serves as the electrical switching element.

Self-monitoring at the safety temperature limiter STB and safety temperature monitor STW (STB).

If the measuring system is damaged, i.e., if the expansion fluid escapes, the pressure in the diaphragm of the STB and STW (STB) drops and permanently opens the circuit. Resetting is no longer possible.

• When the sensor cools to a temperature below approximately 20°C, the circuit is also opened; when the temperature rises above approximately 20°C, the safety temperature limiter (STB) must first be manually reset using the reset button. The STB resets automatically.

Restart lockout on the safety temperature limiter (STB)

If the temperature at the temperature sensor exceeds the set limit, the circuit opens and the microswitch locks mechanically. Once the temperature drops below the danger threshold by approximately 10% of its scale range (approximately 15% if the limit is set above +350°C), the microswitch can be manually unlocked.

• Protection class IP 54.

• Immersion tube with DN 15 (1/2”) connection
• Control range: 0...100°C