TPT July 2020

T E CHNOLOG Y

Oxygen monitor for field welding from HFT WELD purging experts Huntingdon Fusion Techniques HFT ® has designed an on-site monitor for extreme conditions. Huntingdon Fusion Techniques www.huntingdonfusion.com

The PurgEye ® Site, which is protected inside a secure, safe, waterproof and dust-proof carry case, makes it perfect for field welding. Georgia Gascoyne, CEO for HFT, said: “Field welding does not eliminate the need to measure oxygen levels when welding metals such as stainless steel, zirconium and titanium. Often, welders are left to guess at purge levels, due to some Weld Purge Monitors® not being able to handle various on site conditions.” “The PurgEye Site is our on-site monitor, that has been specifically designed for extreme conditions. By using the PurgEye Site, welders can ensure non-oxidised, zero colour welds are achieved regardless of conditions.” The PurgEye Site has a fast response, long life sensor and it is equipped with PurgeNet™, allowing the monitor to connect to a variety of accessories. One of the accessories, an automatic welding machine interface, allows controls to be based upon the oxygen level, to prevent welding if that level is too high. Other accessories include a traffic light visual indication system and a temperature gauge. With the housing case open, the PurgEye Site is IP65 rated and IP68 rated with the lid closed. The PurgEye Site measures oxygen levels very accurately from 1,000ppm, down to 1ppm (accurate to 10ppm). The large, bright, OLED display allows the data to be easily read and is mainly symbol based, rather than text. The display does not need a backlight and can be viewed from greater angles than LED screens. Oxygen levels can be indicated by the PurgEye Site gas analyser in parts per million (ppm) or percentage, depending on user preference. Flow detection ensures accurate reading of gas samples, along with a blocked filter icon and power on/off with a standby button for sensor warm up. The small, low volume, almost indestructible case, can be carried anywhere and the PurgEye Site used either with its internal battery, which lasts up to 10 hours, or connected to mains electricity from 90 – 250V, single phase AC.

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