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Sensor Housing Connectors
The ‘leak tight’ sensor housing connectors are designed to accept 6
mm OD polyurethane purge gas tubing for its low oxygen outgassing
rates and best weld purging results.
Small lengths of this tubing will be supplied with your PurgEye
®
instrument, so that you can join your normal purge exhaust hose
as required.
We recommend that you purchase your desired length of
polyurethane purge tubing from HFT
®
to eliminate leaks that might
arise from joining multiple purge hoses together.
Connecting the Purge Gas Tubing
The weld purge gas inlets and exhaust
tubes simply push into the two tube
connectors on the sensor housing cover
as shown with the arrows on the picture.
It doesn’t matter which way around the
tubes are connected.
If the aspirator bulb hand pump is not
being used, always ensure that there is
an exhaust tube of at least 150 mm (6”)
in length connected to the other tube
connector (this may need to be longer
if using very low ow rates, in order
to prevent atmospheric oxygen from
migrating into the sensor chamber).
Extra 150 mm (6”) tail pipe is
included for free flow use
© HFT
®
UNDERSTANDING the MONITOR
BEFORE TURNING ON
Tube connectors
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