STS-ST-STEX-LNZ450EX22 Atex Thermal Flow Switch Sensor

Atex Flow Switch

Atex Rated Flow Switch models STS-ST-STEX-LNZ 450 EX22. The function of the flow controller is based on the thermodynamic principle. The sensor is heated internally a few degrees °C compared to the medium into which it projects. When the medium flows, the heat generated in the sensor is conducted away by the medium, i. e. the sensor cools down. The temperature within the sensor is measured and compared to the temperature of the medium. The state of flow can be derived for each medium by the temperature difference attained.

  • Atex Catagory 1G/2G Installation in partition wall Zone 0 / Zone 1 (gas) and 1D Installation in Zone 20 (dust)
  • Atex Catagory 2G Installation in Zone 1 (gas) and 2D Installation in Zone 21 (dust)
  • Atex Catagory Category 1/2 - 1 • Zone 0/1 - 20
  • Atex Catagory 3D II 3D IP 65 T 90 °C X
  • IP67
  • Voltage:24Vdc or Supply from SZA Amplifier
  • Output:SZA Amplifier / SPDT Relay / 4...20mA