Stellar Instruments SI620 Hydrogen Gas Leak Detector

The Stellar SI620 Hydrogen Gas Leak Detector is a high-sensitivity trace gas leak detector designed for accurate detection of hydrogen gas leaks. It uses a heated semiconductor sensor with microprocessor control to provide reliable digital signal processing and fast leak detection. With sensitivity of less than 5 ppm / 2g per year, instant response time, adjustable leak sensitivity, and a 15.5 inch flexible stainless-steel probe, the SI620 is ideal for precise gas leak checking in industrial, maintenance, HVAC, refrigeration, and field service applications. Features: Detects 5% Hydrogen (H2) + 95% Nitrogen (N2) mixture High sensitivity: less than 5 ppm / 2g per year Heated semiconductor sensor for reliable detection Microprocessor-controlled digital signal processing Instantaneous response time Adjustable leak sensitivity levels 7 LED visual indicators for easy leak identification Warm-up time: 45 seconds Built-in DC brushless fan 15.5 inch / 40 cm flexible stainless-steel probe Ambient concentration reset function Automatic zero and background compensation Approx. 1-year sensor life Battery operated using 4 AA alkaline batteries Suitable for precise trace gas leak detection applications