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3.5 CONNECTING THE NITROGEN GAS SUPPLY
Connect the viscometer to a 30 Bar nitrogen
supply via a gas regulator and / or gas tap. Turn
off the gas supply then connect the flexible inter-
connection tube between the regulator / tap and
the inlet connector on the left hand side of the
Viscometer base.
The connections must be firmly tightened to
ensure that they are gas tight.
Check for gas leaks around the inlet connection
by:
•
Obvious hissing
•
Soap solution around the joints.
If hissing is heard or a leak is shown up by soap
solution then gas will escape allowing a drop in
pressure. A leak can usually be cured by using
PTFE tape on the leaking connection and then
re-connecting and tightening using a spanner.
WARNING: Never subject the viscometer, the connecting hose or any of the accessories
to pressures greater than 35 Bar.
Have your gas regulator checked at regular intervals.
NoTE: The Viscometer has an overpressure detector that disconnects the Nitrogen
Supply if a pressure exceeding 35 Bar is inadvertently applied. Should this detector be
activated; it can only be re-set by reducing the pressure then switching the viscometer off
then on again.
Shown: Nitrogen supply connection
PET Plus User Manual
17
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