Low Cost 1 PPM Weld Purge Monitor® For many years, oxygen monitors and gas analysers have been used for weld purging. These instruments have been designed and calibrated for accuracy at atmospheric oxygen level, but not for weld purging where accuracy is required when reading much lower oxygen levels. With their scientific background, Huntingdon Fusion Techniques HFT® have designed and manufactured the PurgEye® 300 Nano, the World’s first and only low cost, no frills, Weld Purge Monitor® that measures accurately down to 10 parts per million (ppm) on a large alpha numeric display. Ron Sewell, Chairman for HFT® said: “The PurgEye® 300 Nano has been developed for weld purging where data logging, alarms and welder control are not necessarily required. It is small, lightweight and inexpensive. There are no knobs, no switches, no controls, making this a really simple, ‘plug and play’ monitor.” 4 TUBE NEWS November 2017 “A unique long life sensor is used, that has the capacity to measure oxygen down to 1 ppm with very high accuracy down to 10 ppm. The Nano avoids the disadvantages of monitors with ‘wet cell’ technology that have to be regularly calibrated and have sensors replaced.” With its ‘leak tight’ connectors for weld purge hoses, the PurgEye® 300 Nano can be used with free flow from the exhaust of a purging system, or with an optional accessory hand pump and gas sampling probe that can take readings via a joint gap.