can be used for gas detectors as well as for gas densitometers. The following are the ratings and output characteristics of this sensor. It is recommended to refer to the individual user’s manual for further information. * Target gases and concentration Gases Detection range Methane CH40.05 ~ 5％(0.05 ~ 2％) Propane C3H80.03 ~ 2.2％(0.03~ 1％) Iso-butane Iso-C4H100.03 ~ 1.8％(0.03 ~ 0.8％) Hydrogen H20.05 ~ 4％(0.05 ~ 1.5％) Ethanol C2H5OH 0.05 ~ 3.2％(0.05 ~ 1.5％) Hydrocarbons CnH2n+21~100% LEL (1~50%LEL) ( ) is a detection range in high accuracy * Ratings Items Specifications Supply voltage DC 2.20 +/- 0.22ＶAC 2.20 +/- 0.22Ｖ (r.m.s. 50~60Hz) Current (When 2.2V is supplied) DC 340 ~ 380mA AC 340 ~ 380mA (r.m.s. 50~60Hz) Ambient Te m p e r a t u r e In operation -10 ~ +50°CIn storage -10 ~ +60°CAmbient humidity In operation 95％RH or less In storage 99％RH or less (No dew condensation)