The ATP-C1 Carbon Dioxide Gas Leak Detector is the most technologically advanced of its kind. The fully automatic ATP-C1’s low power requirements, small size and high sensitivity combine to create a tool which is easy to handle and ultra effective at locating even the most difficult-to-find leaks. The ATP-C1’s long life sensor will detect concentrations of carbon dioxide gas as low as 400 ppm over ambient. False alarms are eliminated due to its high selectivity. The ATP-C1 is excellent for servicing carbon dioxide refrigeration systems or any general purpose leak detection application where compressed carbon dioxide can be used as the test gas.