We currently have 8 Weld Purge Monitors® in our Range, all with different features, capabilities and of course, price! Some features include: OLED screen for clear, bright figures and text, user settable warning alarm levels between 1 – 999 ppm, readings from 1,000 ppm – 1ppm, reads accurately to 10 ppm, audible alarm features to indicate low and high levels of oxygen, PurgeNet™ controls the welding power sources such as orbital welders and any other automatic welding system to switch on and off accordingly to oxygen levels, transferring data easily with the ability to link to external devices.