Weld purging stainless steel and CRAs at a distance

28 August 2019

Huntingdon Fusion Techniques® (HFT®) has made it possible to have an immediate reading of a weld purge gas from any distance up to 1,000 metres away, with the PurgEye® 1000.

The Weld Purge Monitor® has a stainless steel sensing head that can be fitted onto any pipe weld purging system, or can be left in the welding zone and have the oxygen levels transmitted electronically to a monitor up to 1 km away.

“If exhaust gas from a normal weld purge system is piped down a hose to a distant measuring instrument, it may take many minutes, or even hours in some cases, to reach the sensor. The exhaust gas may even be contaminated on the way by outgassing from the walls of the hose material or from air drawn in through a leaky connection,” Luke Keane, Technical Sales Manager for HFT® explains. “The PurgEye® 1000 Weld Purge Monitor® has been designed and developed specifically to overcome such difficulties and has a sensor placed immediately next to the weld purge site. This way, the operator can be certain that the weld purge reading is correct and that the joint will not be adversely affected by oxidation, allowing welders to achieve that sought after zero colour weld.”

The PurgEye® 1000 measures oxygen levels from 1,000 parts per million (ppm), right down to 1 ppm (accurate to 10 ppm), ideal for welding metals such as stainless steels, duplex steels, titanium and zirconium where oxide free, zero colour welds are required time after time. 

Image courtesy of Huntingdon Fusion Techniques®