SP-41

The SP-41 is a tin di-oxide semiconductor gas sensor which has a high sensitivity to HCFCs (e.g. Freon: R-22) with reduced sensitivity to other gases such as alcohol.

Structure

Gas sensitive semiconductor material is formed on the alumina substrate on which the gold electrodes are printed.
A thick film heater of ruthenium oxide is printed on the reverse of the substrate and placed in the plastic housing.

Application REFRIGERANT DETECTION: HCFCs (R-22)

Attachments