Specifications

14
ThePV621,622and623
Pressure Stations
Features
•Auniquelycapable,re-rangeableandselfcontainedpressuretest
system
•Advancedpressuregeneration
 -95%vacuumto20bar(300psi)pneumatic
 -95%vacuumto100bar(1500psi)pneumatic
 -0to1000bar(15000psi)hydraulic
• Standalonereplacementsforhandpumps
• Benchtopuseascomparators
Therearethreepressuregenerationstations:thePV621,a
pneumaticpressuregeneratorforpressures95%vacuumto
20bar(300psi);thePV622,apneumaticpressuregeneratorfor
pressures95%vacuumto100bar(1500psi);andthePV623,a
hydraulicpressuregeneratorforpressuresupto1000bar
(15000psi).Eachpressurestationisdesignedforstand-alone
operation as a pressure generator and can replace conventional
handpumpstoprovidegreatereciencyandeaseofuse.Theycan
alsobeusedontheworkbenchasacomparators.
ThePV621hasaconventionalhandpump,volumeadjusterand
pressure/vacuumselector,butwillgeneratepressurewithhalfthe
eortofconventionalsystems.
ThePV622100bar(1500psi)pneumaticstationrepresentsa
ve-foldincreaseincapabilityandsolvesthetransportationand
health and safety issues of using gas bottles and regulators as a
pressuresourceineldlocations.Itfeaturesaninnovativedual
stage system incorporating a hand pump to generate pressure and
ascrewpresstointensifythepressure.Foratypical4”gauge
mountedonthestation,100bar(1500psi)canbeachievedinjust
onecycle,buttheprocesscanberepeatedasmanytimesas
requiredforhighervolumesystems.Thescrewpressconvertstoa
precision volume adjuster allowing the test pressure to be increased
ordecreasedasrequired.
ThePV623solvesmanyoftheproblemsassociatedwithhydraulic
pressuregenerationbygeneratingpressureto1000bar(15000psi)
andprovidingastablepressurewithin1minute.Inconventional
systems priming to remove air is wasteful and messy and pressure
stability is only achieved after several minutes. This instability is the
resultofthermalchange,seenasalargepressureleak,whichcan
renderthedeviceunusableforcalibrationfor10minutesper
pressure test.
OperationofthePV623issimple.Thescrewpressisrotated
anti-clockwisetollthescrewpresswithhydraulicuidfroman
internalreservoir.Thescrewpressisthenrotatedclockwisetoll
thetestdeviceandcompressthehydraulicuid.Forlargervolume
systemstheprocesscanberepeated,anon-returnvalveprevents
pressurelossontherellcycle.Whenthetestpressurehasbeen
reached the screw press converts to a precision volume adjuster for
makingneadjustments.
Combining any of the pressure stations with a PM 620 pressure
moduleandtheDPI620calibratorcreatesauniquelycapable,
self-contained pressure calibrator.
PV 621, 622 and 623 Specification
Maximumpressure PV62120bar(300psi)pneumatic
PV622100bar(1500psi)pneumatic
PV6231000bar(15000psi)hydraulic
Pressure media PV621andPV622non-corrosivegases,
PV623de-mineralizedwaterormineraloil
(ISOviscositygrade<22)
Operating temperature -10°to50°C(14°to122°F)
Forwater+4to+50°C(39to122°F)
Storage temperature
-20to70°C(-4to158°F)(mustbeemptyofwater)
Shockandvibration BSEN61010:2001;Defstan66-31,8.4catIII,
1mdroptested
Pressure safety
PressureequipmentdirectiveclassSEP
Sizeandweight 450mmx280mmx235mm,
PV6212.65kg,PV6223.30kg,PV6233.75kg
PV 62X IS Pressure Station Specification
Operating temperature -10 ° to 40 ° C(14 ° to104 ° F)
Baseefa10ATEX0011X
IECExBAS10.0003X
Page11of46TR0753Issue1
ExII2G
EN60079-0:2009 ElectricalapparatusforPotentiallyExplosive
Atmospheres–GeneralRequirements.
(Harmonized)
(IEC60079-0:2007Edition5)
EN60079-11:2007 ElectricalapparatusforPotentiallyExplosive
Atmospheres–IntrinsicSafety‘i’.
(Harmonized)
(IEC60079-11:2006Ed5)
PV621
PV622
PV623