美國(guó)VTI公司生產(chǎn),針對(duì)致冷劑R-22檢測(cè)模塊,有擴(kuò)散式和泵吸式兩種型號(hào),測(cè)量范圍0-3000ppm OEMopticalbench Costeffective-Highquality Nondispersiveinfrared(NDIR)technology DiffusionGasCell-nomovingparts Precisiongascalibrationkitavailable Solidstatethroughout Fastwarm-up Notaffectedbywatervapor Industriallyrobust Linear0-5V 4-20mAcurrentloopoutputs 14to24VDCinputpower