The SB-53 is a semiconductor gas sensor which has a high sensitivity to ammonia. This model is suitable for deodorizing apparatus, air purifiers, ventilators, etc.
Structure
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 (100mesh) in the path of gas flow. The mesh is anti-explosion feature.
The sensitivity characteristics of the SB-53 is specified by the following parameters.
Features
Sensor resistance level: in clean air
Sensor resistance change ratio: between ammonia 100ppm and 250ppm
Sensor resistance change ratio: between ammonia 10 ppm and in air
