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