EiUK ‐ Eutrotron Instruments UK Ltd. • Unit 13 Riley Close • Royal Oak Ind Est • Daventry • Northants NN11 8QT • England U.K.
Phone: +44 (0) 1327 871044 • E‐Mail: sales@eurotron‐uk.com • Internet h p://www.eurotron‐uk.com
Operang Manual
•PGS‐40 PGS‐60
Never actuate the change‐over valve (4)
when the test pump is under pressure or
vacuum! Actuate the change‐over valve
only, when the relief valve (3) is open.
Make sure that the pressure relief valve (3) is not
closed completely.
Turn the fine adjustment valve (2) anclockwise up
to the end (smooth „stop“ can be felt).
Make sure, that the adjustable knurled nut (6) is in
such a posion, that the visible spring (or bushing)
above the nut has some clearance, if the handles
(5) are pressed together.
Carefully turn the pressure relief valve (3) unl the
valve closes. You will not nofy any „hard stop“.
Operate the hand pump (5) unl the max. priming
pressure is achieved:
PGS‐40: approx. 20 ‐ 25 bar
PGS‐60: approx. 35 ‐ 40 bar
Turn the fine adjustment valve (2) clockwise to
increase the pressure to maximum
PGS‐40: approx. 40 bar
PGS‐60: approx. 60 bar.
The max. pressure value depends on the volume of
the calibraon circuit.
Move the fine adjustment valve (2) unl the
requested test pressure has been reached
precisely (to be read on the reference instrument).
Aer increasing the pressure, the reading
may slightly drop again for about 30 sec.
This is caused by thermodynamic effects,
the tube connecon and the sealing
gaskets. If the pressure drop does not
come to a standsll, check the measuring
circuit for ghtness.
Due to the low volume of each
compression stroke of the test pump,
only small volume test specimen should
be tested.
A pressure reducon is achieved by turning the
fine adjustment valve (2) counter‐clockwise first
and then by carefully opening the relief valve (3).
Remove the reference instrument or the
test specimen only when the relief
valve (3) is open and no pressure is in the
test pump any more.
5. Operan (vacuum)
First, check wether the change‐over valve (4) has
to be actuated (see scker on the device). For this
purpose use a pen or a small screw‐driver. The
encasement of the switch is intended to help
prevent unintenonal actuaon.
Never actuate the change‐over valve (4)
when the test pump is under pressure
or vacuum! Actuate the change‐over
valve only when the relief valve (3) is
open.
Make sure that the pressure relief valve (3) is not
closed completely.
Make sure, that the adjustable knurled nut (6) is in
such a posion, that the visible spring (or bushing)
above the nut has some clearance, if the handles
(5) are pressed together.
Turn the fine adjustment valve (2) clockwise up to
the end (“stop“ can be felt).
Carefully turn the pressure relieve valve (3) unl
the valve closes. You will not nocy any „hard
stop“.
Operate the handles (5) smoothly and slowly unl
approx. ‐0.9 bar of vacuum are reached.
Turn the fine adjustment valve (2) an‐clockwise to
increase vacuum up to ‐0.95 bar. Turn this valve for
fine‐adjustment.
Aer increasing the vacuum, the reading
may slightly drop again for about 30 sec.
This is caused by thermodynamic effects,
the tube connecon and the sealing
gaskets. If the vaccum drop does not
come to a standsll, check the measuring
circuit for ghtness. Due to the low
volume of each compression stroke of the
test pump, only small volume test
specimen should be tested.
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