Description
The thermo-element of the thermo detector TM 1/9 has two different trigger functions that work in parallel. It reacts to the adjusted temperature threshold and triggers an alarm upon a rapid temperature rise which is typical of fire. In case of smouldering fire, i.e. slowly rising temperatures, the system heats up steadily and triggers an alarm when the nominal value of the sensor is reached. In case of quickly rising temperatures, typical of an open fire, an alarm is triggered before the nominal value is reached.
Specifications
- Supply voltage range: 13 V to 30 V DC
- Current drawn at 20 V: min. 3 mA to max. 30 mA
- Temperature switching point: classes according to DIN EN 54-5
- Ambient temperature range: ex-free zone -40 °C to +85 °C, ex-zone -20 °C to +60 °C
- Process temperature range: ex-free zone -40 °C to +160 °C, ex-zone -20 °C to +60 °C
- Storage temperature: -40 °C to +70 °C
- Storage temperature: -20 °C to +60 °C
- Relative humidity: 0 to 95 %, non-condensing
- Application area: dust explosive zones 20, 21, 22
- Connection: pre-fitted pluggable connecting cable, number of wires/wire cross section: 3 x 0.5 mm²
- Cable length: 2.5 m (VdS-compliant), 25 m (optionally)
- Material of housing: Aluminium die casting (GD-AlSi12)
- Degree of protection: IP 65
- Connection: pre-fitted connecting cable, pluggable: cable length 2.5 m (3 x 0.5 mm²) optionally 25 m (3 x 0.5 mm²)
- Housing dimensions: 84 mm x 84 mm x 31 mm
- Sensor length: 60 mm
- Material of sensor (material number): 1.4571 (food safe)
- Housing color: orange (RAL 2004), lacquered
- Weight: approx. 320 g
- Available mounting adapters: threaded mounting adapter FM 1/8 Ex, welding mounting adapter FM 1/8 Ex, room monitoring mounting adapter (VdS-compliant)
