Leaks on a refrigeration system or heat pump have serious consequences. A leaking system no longer provides its required cooling capacity, and, in the worst case scenario, system components can be damaged, not to mention the environmental damage and costs incurred by your customer. You need fast, reliable measuring instruments such as the testo 316-4 leak detector, in order to be able to detect even the smallest of leaks. *Part No: 0563164 *Operating humidity: 20 to 80 %rH * Reaction time: < 1 sec * Operating temperature: -4.0° to 122.0 °F / -20 to +50 °C * Product colour: Black *Length of gooseneck: 14.567 in. / 370 mm * Start-up time: <50 sec (0 ... +50 °C); <80 sec (-20 ... 0 °C) * Detectable * R134a; R22; R404A; H2 and all common refrigerants such as CFC, HCFC, HFC NH₃ (separate sensor head) * Sensitivity: 3 g/a * Leakage alarm: optical and audible alarm * Alarmsignal: rpm - Optical; audible * Battery type: 1 battery block (6 cell NiMh) * Battery life:6 h (Continuous operation) * Storage temperature: -13.0° to 158.0 °F / -25 to +70 °C * Weight: 12.28 oz. / 348 g