BEAMEX PO8C User manual

PO8C User Guide
Addendum to MCS100 User Guide

PO8C User Guide
Addendum to MCS100 User Guide
Dear user,
We have made every effort to ensure the accuracy of the contents
of this manual. Should any errors be detected, we would greatly
appreciate to receive suggestions to improve the quality of the
contents of this manual.
The above not withstanding, we can assume no responsibility for
any errors in this manual or their eventual consequences.
We reserve rights to make modifications to this manual without any
further notice.
For more detailed technical data about PO8C, please refer to
MCS100 User Guide or contact the manufacturer.
© Copyright 2007
BEAMEX OY AB
Ristisuonraitti 10
FIN - 68600 Pietarsaari
FINLAND
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: http://www.beamex.com
8889800 / PO8C / 002557

Contents
General............................................................................................................... 1
Connections .................................................................................................... 2
Specifications .................................................................................................. 3
Warnings............................................................................................................ 5
General............................................................................................................ 5
Connections .................................................................................................... 5
Pressure Regulator Specific Warnings and Notes........................................... 6
Vacuum Regulator Specific Warnings and Notes............................................ 7
Service............................................................................................................... 8
Selector Valve ................................................................................................. 8
Operation........................................................................................................... 9

PO8C User Guide 1
General
PRESSURE
A D J U S T
R E G U L A T E D
P R E S S U R E
O U T P U TS U P P L Y
O N
O F F
V A C U U M
A D J U S T
V A C U U M P R E S S U R E
R E G U L A T E D
V A C U U M
V E N T
C L O S E
A D J U S T A B L E
V O L U M E
S / N
P O 8 C
PO8C is a variable pressure output module with an output range
of -0.95 to 8 bar gauge (-13.7 to 116 psi).
PO8C includes
•On/Off valve for supply pressure
•Pressure adjuster for pressures above atmospheric
pressure. The adjuster includes a nozzle flapper type pilot
valve for precise pressure adjustment.
•Vacuum adjuster for pressures below atmospheric
pressure. The adjuster includes a nozzle flapper type pilot
valve for precise vacuum adjustment.
•Selector valve with four positions:
PRESSURE, VACUUM, CLOSE and VENT.
•Adjustable volume for exact pressure setting.
The maximum supply pressure to the PO8C Pressure Output
Module is 10 bar (145 psi).
To achieve pressure values lower than the atmospheric pressure,
a sufficient vacuum supply is required.

2 PO8C User Guide
Connections
The PO8C module is connected to the MCS100 chassis via the
supply pressure hose and the vacuum hose. Usually the output of
the vent valve is unconnected.
As the connection depends on the type of your MCS100, refer to
MCS100 User Guide part A, chapter Internal connections on
how the supply pressure is connected to your MCS100.
S u p p l y
p r e s s u r e
V a c u u
V e n t
A d j u s t a b l e v o l u m e
O u t p u t c o n n e c t o r
S e l e c t o r v a l v e
V a c u u m a d j u s t e r
P r e s s u r e a d j u s t e r
Simplified diagram of the connections on the rear side of PO8C.

PO8C User Guide 3
Specifications
General
Feature SI Unit Imperial
Width of module 214 mm 8.43"
Total weight of module 2.4 kg 5.3 lbs
Temperature range
- operating
- storage
10 to 60 °C
-20 to 60°C
50 to 150 °F
-4 to 140 °F
Sensitivity better than
(depends on user)
1 mbar 0.015 psi
Maximum pressure for the
delivered pressure hose 20 barg 290 psi g
Pressure Adjuster
Feature SI Unit Imperial
Medium Clean dry air or other inert,
non-toxic, non-corrosive gas
If you are using Nitrogen,
see Warnings on page 5.
Maximum supply pressure 10 bar 145 psi
Minimum supply pressure Set pressure
+ 0.5 bar
Set pressure
+ 7¼ psi
Regulating pressure range 0.1 to 8 bar 1.45 to 116 psi
Air consumption (discharged to the atmosphere)
●Bleed flow, max
(ANR)1with 10 bar
(14.5 psi) supply
3.5 l/min 0.124 ft3/min
●Exhaust flow, max
(ANR) at maximum set
pressure
0.9 l/min 0.032 ft3/min
Vacuum Adjuster
Feature SI Unit Imperial
Regulating pressure range2-1 to -0.013 bar -14.5 to -0.19 psi
Maximum atmospheric
intake consumption3(ANR) 0.6 l/min 0.021 ft3/min
1ANR = "Atmosphere Normale de Reference",
in English: "standard reference atmospheric conditions".
2Lowest possible pressure depends on the vacuum source and atmospheric pressure.
3Taking air from atmosphere all the time

4 PO8C User Guide
Adjustable Volume
Typical pressure changes using volume's full stroke length.
With a Beamex T-pressure hose connected to
PO8C, MC5 and one end plugged.
From max. to min.
volume, starting pressure Final pressure SI Unit Final pressure Imperial Unit
0 barg (0 psig) => 0.83 barg 12 psig
7 barg (102 psig) => 12.6 barg 183 psig
From min. to max.
volume, starting pressure Final pressure SI Unit Final pressure Imperial Unit
0 barg (0 psig) => -0.46 barg -6.67 psig
7 barg (102 psig) => 3.37 barg 48.9 psig
-0.5 barg (-7.25 psig) => -0.73 barg -10.5 psig
-0.9 barg (-13.5 psig) => -0.94 barg -13.6 psig
Output Connector
The connector is delivered as shown in the leftmost picture
below. The connector includes an adapter to make it easy to
connect pressure hoses delivered by Beamex. By removing the
adapter, a standard ISO288/1-G 1/8" (internal parallel) thread is
revealed for connecting other type of pressure hoses.
O r i n g
I S O 2 8 8 / 1 - G 1 / 8 "
F e a l e
I S O 2 8 8 / 1 - G 1 / 8 " M a l e
w i t h a n i n t e r n a l c o n e ( f o r
B e a e x p r e s s u r e h o s e )

PO8C User Guide 5
Warnings
General
Only personnel with good experience and knowledge of
pressure equipment and pressurized gases are allowed to
work with the module. Read carefully all these instructions
and local safety instructions before starting to use PO8C.
High pressure gas is dangerous because it can break the
container and the flying splinters may cause injury. Also
small leaks of gas may be dangerous because the high
velocity of the leaking gas jet enables penetration through
skin. If a gas bubble gets into the blood circulation, it can
cause death. The leak jet is particularly penetrative, if some
liquid is coming with the gas.
Do not connect an external pressure source to PO8C's
Output connector.
The total volume of measurement hoses and instrument
measurement chambers connected to the PO8C's Output
connector should not exceed 100ml (6.1 in3).
Do not use PO8C if conditions or specifications are beyond
the given specifications. See Specifications on page 3.
Connections
When connecting an instrument to PO8C's OUTPUT con-
nector, make sure that PO8C's output pressure is not too
high/low to damage the instrument or any other equip-
ment/hose being part of the pneumatic system .
If you open the supply valve when an instrument is con-
nected to the pressure output connector, make sure that the
pressure regulator is adjusted to a pressure that can not
damage the connected instrument.
Do not use the same tubing with different liquids and gases.
Use hand tightening with the pressure tubing connections.
When checking a process device, take care that it does not
contain process fluid or particles. For vacuum instruments:
The suction may transport the particles into PO8C. For
positive gauge pressure instruments: When you VENT
PO8C, the fluid or particles might flow into PO8C. In both
cases, the result may be a damaged PO8C. If you are not
sure that the tubing and the instrument measurement
chamber are empty, use a proper collection chamber and/or
filter between the instrument and the module.
Always depressurize the system before opening or con-
necting any pressure fittings or connectors. Use proper
valves for venting the system.

6 PO8C User Guide
Pressure Regulator Specific Warnings and Notes
Air supply: If the drain removal from the air filter and mist
separator is missed, drain will be flown to the regulator (and
onwards), resulting in a possibly malfunctioning equipment.
When removing drain is difficult, use of a filter with auto-
drain is recommended.
If the supply pressure line contains drain or particlate etc.
the pressure regulator's fixed throttle can become clogged
leading to malfunction. Therefore, in addition to an air filter,
be sure to use a mist separator.
If you use nitrogen, minimize the leak to the atmosphere and
take care of sufficient ventilation. Please note the Pressure
Adjuster's Bleed Flow and Exhaust Flow rates found among
the Specifications starting from page 3. Close the valve of
the nitrogen cylinder, when the system is not in use.
Increase in the percentage of nitrogen in the ambient air may
cause unconsciousness and death without warning. Read
carefully the safety instructions for nitrogen and make sure
that the other people in the same space are aware of the
danger.
Do not use the regulator outside the range its specifications
as this can cause failure. Specifications can be found on
page 3 of this manual.
Air is normally released from the bleed hole (the hole in the side
of the body's mid-section). This is a necessary consumption of air
based on the construction of the precision regulator and is not an
abnormality.
When changing the set pressure, keep in mind that changes in
gas pressure affects the gas temperature (which again, affects
the pressure). Also, the tension/volume of the measurement
hoses vary depending on the set pressure.

PO8C User Guide 7
Vacuum Regulator Specific Warnings and Notes
The vacuum regulator uses atmospheric air (continuous
suction). Use it in environments with clean dry air only. Do
not use regulator in such environments where corrosive
gases, chemicals or brine or water or steam is airborne, or
where the regulator can be directly exposed to one of those.
Do not use in locations influenced by vibrations or impacts.
The vacuum regulator is for use of negative pressure only.
Be sure that positive pressure is not applied instead. The
vacuum regulator in itself is not damaged, however the
positive pressure will enter vacuum pump. This may cause
malfunction of the vacuum pump.
Note that an ejector's flow rate is smaller than that of the vacuum
regulator and therefore is not suitable as a "vacuum supply". See
Specifications on page 3 for details on atmospheric intake
consumption.
Pressure response time when changing the set pressure
depends on the inside diameter and length of the piping and also
the capacity of the vacuum source.

8 PO8C User Guide
Service
No serviceable parts inside except as noted further on. In case
PO8C needs service, contact Beamex or your local represent-
ative. Beamex' contact info is on the prepages of this manual.
When disassembling PO8C, first make sure pressure and
vacuum sources are disconnected.
Selector Valve
Packing adjustments may be required for leak-tight performance.
Before servicing any installed valve you must depressurize the
system, cycle the valve and purge the valve. Adjust the packing
bolt clockwise in 1/16 turn increments until leak-tight performance
is achieved.
To adjust the packing, remove the directional handle to see the
packing bolt. Then use Swagelok adapter MS-WK-43 or a
suitable tool to adjust packing.
WARNING!
Failure to periodically inspect and maintain valve packing
may lead to product malfunction.

PO8C User Guide 9
Operation
Turn the selector valve to VENT position.
Ensure that the regulated pressure is set to zero by turning the
PRESSURE ADJUST knob counterclockwise. Also turn the
VACUUM ADJUST knob counterclockwise and set the
ADJUSTABLE VOLUME to its mid point.
Connect the output of PO8C module to the instrument under test
and to a suitable pressure measurement module.
Turn selector valve to either PRESSURE or VACUUM position
depending on your pressure needs. If you want to create
pressures above atmospheric pressure, open SUPPLY valve to
ON position.
To regulate the pressure, use either PRESSURE ADJUST or
VACUUM ADJUST4knobs (again, depending on your pressure
needs). Observe the regulated pressure/vacuum value from the
pressure calibrator’s display. For exact pressure adjustment,
close the selector valve and use the ADJUSTABLE VOLUME
knob. Remember to make small changes and wait for the
pressure to settle. Changes in gas pressure affects the gas
temperature and the tension/volume of the measurement hoses.
To vent pressure, turn selector valve to VENT position. To avoid
pressure shocks, rotate the selector valve to VENT position via
the regulator used for creating the pressure.
When ready, ensure that the regulated pressure is set to zero by
turning the PRESSURE ADJUST knob counterclockwise. Also
turn the VACUUM ADJUST knob counterclockwise, return the
ADJUSTABLE VOLUME to its mid point and set the selector
valve to CLOSE position..
Note!
High pressure is always dangerous. Read carefully the
instructions in chapter Warnings on page 5. Additional
warnings can be found in MCS100 User Guide, chapters:
Warnings When Using Pressure Modules on page 51 and
Additional Warnings When Using High Pressure Modules on
page 52.
4Vacuum adjuster: Pull to adjust, push to lock.

10 PO8C User Guide
Notes

© Copyright 2007
BEAMEX OY AB
Ristisuonraitti 10
FIN - 68600 Pietarsaari
FINLAND
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
[email protected]
Internet http://www.beamex.com
Beamex Inc
2270 Northwest Parkway
Suite 185
Marietta, GA 30067, USA
Phone [phone]
[phone]
Fax [phone]
E-mail [email protected]
Beamex Limited
Newtown Grange Farm Business Park
Desford Road
NEWTOWN UNTHANK
Leicestershire LE9 9FL, UK
Phone [phone]
Fax [phone]
E-mail [email protected]
Representative: