Gas Sensors

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Manufacturer: Nissha-FIS

LPG-Propane (R290) semiconductor gas sensor - silica filter


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The SB-15B is a tin dioxide semiconductor gas sensor which has an excellent performance in LP-GAS (PROPANE/BUTANE) Detection.

The features are: high sensitivity, low sensitivity to noise gases, quick response speed, strong poisoning resistance and significant low power consumption design (120 mW).


Gas sensitive semiconductor material is a mini bead type and a heater coil and electrode wire are embedded in the element. The sensing element is installed in the metal housing which uses double stainless steel mesh (100 mesh) in the path of gas flow

Sensitivity characteristics

Sensitivity characteristics of our gas sensors are expressed by the relationship between the sensor resistance and gas concentration. The sensor resistance decreases with an increase of gas concentration based on a logarithmic function. The sensitivity characteristics of the SB-15B is specified by the following parameters.


  • Sensor resistance level: at iso-butane 1000 ppm
  • Sensor resistance change ratio: between iso-butane 1000 ppm and 3000 ppm
  • Sensor resistance change ratio: between and in air iso-butane 1000ppm
  • Purpose: Safety and Security
  • Use: Industrial gas leak detector
  • Target gas: Propane/Hydrocarbons/Refrigerant/Freon
  • Max concentration: 10000 ppm
  • Silica filter


Via Magenta, 77/16A
20017 Rho (MI) - Italy
Phone +39 02 3340 0846
VAT: IT04126380155
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Via Magenta, 77/16A
Rho 20017, Italy
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+39 02 3340 0846

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