Nap-50a is a miniature & low power consumption type sensor. Nap-50a is Mainly used for gas detectors. Compared to nap-55a, nap-50a has a lower Alcohol sensitivity to eliminate false alarms caused by alcohol, thus more reliable Gas detectors can be produced with nap-50a. The following are the basic Characteristics but it is recommended to refer to the individual user’s manual for Further information. See nap-66a for measuring circuit for sensor evaluation. Target gases and concentration GasesDetection range MethaneCh40.05 - 5% (0.05 - 2%) EthaneC2h60.05 - 3.2% (0.05 - 1.5%) HydrogenH20.05 - 4% (0.05 - 1.5%) HydrocarbonsCnh2n+21 - 100%lel (1 - 50%lel) ( )is a detection range in high accuracy Gas sensitivity characteristics Gas & concentrationOutput voltage Output in clean air-35 - +35 mv Methane 3, 000 ppm10 - 16 mv Hydrogen 1, 400 ppm7 - 12 mv Ethanol 1 %Less than 10 mv Ratings ItemsRatings Supply voltageDc 2.5±0.25v Ac 2.5±0.25v(r.M.S. 50-60hz) Current (2.5v supplied)Dc 150 - 170ma Ac 150 - 170ma(r.M.S. 50-60hz) Ambient temperatureIn operation -10 - +50°c In storage -10 - +50°c Ambient humidityIn operation 95%rh or less In storage 99%rh or less(no dew condensation)