SP-42A是主要檢測以氟里昂R-134a為主的冷媒氣體.對于此類氣體有著優(yōu)越的檢出性能.可用于冷媒氣體泄露儀等設(shè)備.驅(qū)動條件電熱電壓:5.0V+/-4%DC或AC回路電壓:10V以下DC或AC負(fù)載電阻:可變Ps 15mW氣體感度特性傳感器阻值:4.0kΩ+/-2ΩR-134a100ppm中氣體感度-阻值比:0.50~0.65Rs(R-134a300ppm)/Rs(R-134a100ppm)氣體感度: 0.40Rs(R-134a300ppm)/Rs(潔凈大氣)