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The TPI 720b is a combustible gas leak detector designed for locating gas leaks in residential and commercial service applications. The unit features a 16-inch flexible gooseneck probe that allows technicians to access tight spaces around fittings, valves, and appliance connections. Detection sensitivity reaches 10 PPM, allowing early identification of leaks before concentrations become hazardous. An audible tick alert signals the presence of combustible gas, with tick rate increasing as gas concentration rises. HVAC technicians, gas fitters, and plumbers use this tool during commissioning, routine service, and leak investigations.
The 720b is suited for residential and light commercial environments where combustible gas systems require inspection. The probe design makes it practical for checking gas appliance connections, meter sets, distribution piping, and flexible connectors. The detector responds to a range of combustible gases including natural gas, propane, methane, butane, and acetone vapors, making it a versatile tool for multi-fuel service work.
Designed for general combustible gas leak detection across residential and light commercial gas distribution systems and appliance connections.
This instrument is used by licensed gas fitters, HVAC technicians, and plumbers during gas system inspection and leak verification. Before using the detector near an open flame or suspected active leak, ensure ignition sources are eliminated and ventilate the area if gas odor is present. The detector is a survey tool and does not replace pressure testing per applicable codes such as IFGC or local gas utility requirements. Allow the sensor to warm up per manufacturer instructions before beginning a sweep.
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