Description
FM 3/8 sensors with fibre optic cables are used where processing or drying temperatures exceed 600 °C (1112 °F). Three separate stainless steel covered glass fibre cables transmit the infrared radiation to the sensor, with each cable ending on a separate photo optic diode. Solid glass adapters are added to the cable end for extremely high temperatures. Detection reliability is achieved by using three detection elements per sensor. The fibre optic cables are available in different lengths for different duct diameters.
Specifications
- Supply voltage range: 18 V to 22 V DC
- Current drawan at 20 V: 10 mA ± 1 mA
- Spectral sensitivity: 780 nm to 1100 nm
- Temperature range, environment –40 °C to +70 °C
- The ambient temperature in the material flow: max. +80 °C at the lens
- Temperature range, storage: -40 °C to +70 °C
- Relative atmospheric humidity: 0 to 95 %, non-condensing
- Transportation speed: 2 to 50 m/s (other speeds on demand)
- Use: in non-explosive areas, in areas without daylight and artificial light
- Connection: ready-to-use connecting cable, plug-in, cable length 2.5 m (3 x 0.5 mm²) optionally 25 m (3 x 0.5 mm²)
- Material of housing: aluminum 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 x 84 x 31 mm
- Housing color: red (RAL 3000), lacquered
- Weight: 490 g (excluding connecting cable)
- Available mounting adapters: threaded adapter FM 1/8 Ex, welding adapter FM 1/8 Ex, air purge adapter SPA and SPA Ex
