Alltemp D-340气体检漏仪技术参数FEATURES          Designed for leak sensing requirements of R22, R410a & R134a but will also detect all commercially available HCFC, HFC, CFC as well as the newer replacement blend refrigerants.          The most sensitive hand held leak detector on the market when adjusted          to MAX mode.          Adjustable sensitivity levels.          No false alarms.          No calibration required.          Long life heated sensor.          Audio volume control.          Low battery indicator.          Finds leaks in contaminated areas.          Includes holster with belt clip. SPECIFICATIONS          Alarm Sensitivity: 0.05 oz/yr. (R134a), 0.025 oz/yr. (R22)          Sensitivity: Exceeds SAE standard J1627.          Power: 4 AA batteries          BatteryLife: 8 to 10 continuous hrs with low          battery indicator.          Warm Up: Less than 30 seconds.          Operating Temperature: 0°c to 40°c (-32°F to 104°F)          Probe Length: 42 cm (16.5")          Total Reach: 61 cm (24")          Weight: 0.35 kg (12.3 oz.) APPLICATIONS          Motor vehicle A/C          Centrifugal chillers         Refrigerant transport         Industrial process          refrigeration.          Industrial process air          conditioning          Ice skating rinks          Cold storage warehouses          Heat transfer systems         Household refrigerators, freezers & A/C          Reciprocating & screw chillers          Retail food refrigeration          Ice machines          Vending machines          Water coolers          Refrigerated transport