With its proprietary semiconductor sensor, the digital refrigerant leak detector (RLD400) is built to detect all commercially available HFC, HFO, HC, HCFC, and CFC refrigerant gases, including many blends, such as R-22 and R-1234yf. The detector’s features include the lifespan of its proprietary semiconductor sensor — more than 300 hours of operation or 10 years normal use — and sensitivities of 0.05 ounce/year (1.4 g/year) to R-134a and R-22, 0.025 ounce/year (0.7g/year). A true mechanical pump draws in samples, which increases sensitivity, the company said. Three sensitivity levels let users choose the level for specific environments. Triple-redundant leak indication — a loud, fast beep; a bright-flashing LED; and a relative digital leak-size readout — make it easy to identify and characterize leaks in any setting. The detector’s automatic calibration and reset offers accurate leak readings not distorted by ambient levels. In addition, a leak test vial containing a refrigerant sample allows users to easily confirm the instrument is operating correctly.