‘The PurgEye® 1000 is one of our five Weld Purge
Monitors® to now feature PurgeNet™, a networking
device designed for communicating the current
oxygen reading from the Monitor, to another piece
of equipment, such as the visual warning accessory
PurgeAlarm™ or a Dew Point Monitor with additional
inter-pass temperature monitoring.” The sensor is secured in a tiny module, which is
mounted inside the purging system and is connected
to the measuring instrument by a data cable. The
purge reading is sent back to the instrument at
the speed of light, so operators and quality control
personnel know immediately when the purge is
satisfactory.
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, for a stable reading 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. 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.
In the event the oxygen level is too high, the weld
would become oxidised at best and might even
have nitrogen and hydrogen absorbed into the joint
at worst, which could cause metallurgical defects
leading to other problems. The PurgEye® 1000 Weld
Purge Monitor® has been designed and developed
specifically to prevent oxidation under distance
monitoring conditions and has a sensor placed
immediately next to the weld purge site.
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.
.
Huntingdon Fusion Techniques HFT®
have a Worldwide Exclusive Distributor
network, which can be found at:
www.huntingdonfusion.com.
TUBE NEWS October 2017
15