Primary standard for dening the pressure scale in a
pneumatic range of up to 100 bar (1,500 psi) or with a gas
to oil separator up to 400 bar (5,000 psi)
■
Reference instrument for factory and calibration laboratories for the testing, adjustment and calibration of pressure
measuring instruments
■
Complete, stand-alone system, also suitable for on-site use
Calibration technology
WIKA data sheet CT 31.01
Special features
■
Total measurement uncertainty to 0.008 % of reading
■
Factory calibration included as standard, traceable to
national standards; with DKD/DAkkS calibration possible
as an option
■
High long-term stability with recommended recalibration
interval every ve years
■
Masses manufactured from stainless steel and aluminium,
can be adjusted to local gravity
■
Quick and safe replacement of the piston-cylinder system
for measuring range changes via patented ConTect quickrelease system as an option
Description
Proven primary standard
Pressure balances (dead-weight testers) are the most
accurate instruments available on the market for the calibration of electronic or mechanical pressure measuring instruments. The direct measurement of the pressure (p = F/A), as
well as the use of high-quality materials enable a very small
measurement uncertainty, in conjunction with an excellent
long-term stability.
The pressure balance (dead-weight tester) has therefore
been used for years in factory and calibration laboratories in
industry, national institutes and research laboratories.
Pneumatic pressure balance, model CPB5000
Basic principle
Pressure is dened as the quotient of force and area. The
core component of the CPB5000 is therefore a very precisely
manufactured piston-cylinder system, onto which a mass
load is applied in order to generate the individual test points.
The mass load is proportional to the target pressure and this
is achieved through optimally graduated masses. As standard, these masses are manufactured to the standard gravity
(9.80665 m/s²), though they can be adjusted to a specic
location and also DKD/DAkkS calibrated.
Stand-alone operation
Due to its integrated pressure generation and the purely
mechanical measuring principle, the model CPB5000 is ideal
for on-site use for maintenance and service.
WIKA data sheet CT 31.01
Data sheets showing similar products and accessories:
Pressure balance in compact design; model CPB3800; see data sheet CT 31.06
Hydraulic pressure balance; model CPB5800; see data sheet CT 31.11
Pressure balance for high pressure; model CPB5000HP; see data sheet CT 31.51
Pressure balance for dierential pressure; model CPB5600DP; see data sheet CT 31.56
CalibratorUnit; model CPU6000; see data sheet CT 35.02
∙ 03/2016
Page 1 of 12
Page 2
Easy operation
The pressure setting depends on the instrument version
and is either done via an integrated pump or from external
pressure supply via a metering valve. For further pressure
increases and ne adjustment, a very precisely controllable
spindle pump is tted, which only runs within the pump body.
The piston-cylinder system
As soon as the measuring system reaches equilibrium, there
is a balance of forces between the pressure and the masses
applied. The excellent quality of the system ensures that this
pressure remains stable over several minutes, so that the
pressure value for comparative measurements can be read
without any problems, or also so that more complex adjustments can be carried out on the test item.
Both the piston and cylinder are manufactured from
tungsten carbide. This pairing of materials, in comparison
to other materials, has very low pressure and temperature
coecients of expansion, which results in a very good
linearity for the eective area of the piston and a very high
accuracy.
Piston and cylinder are very well protected against contact,
impacts or contamination from outside in a solid stainlesssteel case. At the same time, overpressure protection is
integrated, which prevents the piston from being forced out
vertically and avoids damage to the piston-cylinder system in
the event of masses removal under pressure.
The masses are stacked on a mass carrier, which sits on the
piston shaft. The construction of the mass carrier provides
a very low centre of gravity for the stacked masses, which
minimises both the side thrust on the piston-cylinder system
and the friction. For relatively low starting pressures, a lighter
aluminium plate can be used instead of the mass carrier.
The overall design of the piston-cylinder system and the
very precise manufacturing of both the piston and the
cylinder, ensures excellent operating characteristics with
long free-rotation time and low sink rates. Thus a high
long-term stability is ensured. Therefore, the recommended
recalibration interval is two to ve years dependent on the
conditions of use.
Force F
The connection of the piston-cylinder system is a M30 x 2
male thread as standard.
The patented ConTect quick-release connector, for easy
measuring range changes without the need for tools, is
available as an option.
High-performance instrument range
The CPB5000 basic instruments are available in the following
three designs:
■
Pneumatic base, low pressure
- up to max. 10 bar (150 psi)
- with integrated pressure generation through priming
pump and spindle pump
■
Pneumatic base, high pressure/vacuum
- up to max. 100 bar (1,500 psi)
- connection for external pressure supply or vacuum
■
Pneumatic base with integrated gas to oil separator
- up to max. 400 bar (5,000 psi)
- connection for external pressure supply
- for use with hydraulic piston-cylinder systems with
M30 x 2 connection
- test items can be easily, dryly and cleanly calibrated with
air
As standard, all basic instruments are tted with a connection
for the piston-cylinder system with a M30 x 2 female thread.
The optional, integratable, patented ConTect quick-release
connector enables a quick and safe changing of the
measuring range without tools. Thus one can build a priceoptimised complete system out of a universal system base
and up to 3 ConTect piston-cylinder systems of dierent
measuring ranges, which can be operated with only one
mass set.
The hydraulic measuring ranges of the model CPS5000
piston-cylinder systems can be used on the instrument base
of the CPB5800 hydraulic pressure balance. For this, the
ConTect quick-release connector is needed.
Eective area A
Pressure p
Piston-cylinder system model CPS5000
Page 2 of 12WIKA data sheet CT 31.01 ∙ 03/2016
Page 3
Tables of masses
The following tables show the number of masses within a
mass set with their nominal mass values and the resulting
the relevant corrections must be made, for example with the
CPU6000 CalibratorUnit, see page 9.
nominal pressures for the respective measuring ranges.
Should the instrument not be operated under reference
conditions (ambient temperature 20 °C (68 °F), atmospheric
pressure 1,013 mbar (14.69 psi), relative humidity 40 %),
The masses are manufactured, as standard, to the standard
gravity (9.80665 m/s²) although they can be adjusted for any
Nominal eective area of the pistoncm²5510.20.20.2
Hydraulic version
Measuring range
1)
Required masseskg305025403050
Smallest step
2)
(Standard mass set)
Nominal eective area of the pistoncm²0.50.50.10.10.050.05
Hydraulic version
Measuring range
1)
Required masseskg34343450
Smallest step
2)
(Standard mass set)
Nominal eective area of the pistoncm²0.50.10.050.05
Accuracy
3)
Material
PistonTungsten carbide
CylinderTungsten carbide
Mass set1.4305 stainless steel and aluminium, non-magnetic
Weight
Piston-cylinder system (incl. mass
carrier and piston plate in optional
storage case)
bar vacuum mass set (incl. pistoncylinder system in carrying case)
bar basic mass set, pneumatic
(incl. carrying case)
bar extension mass set, pneumatic
(incl. carrying case)
bar basic mass set, hydraulic (incl.
carrying case)
bar extension mass set, hydraulic
(incl. carrying case)
psi vacuum mass set (incl. pistoncylinder system in carrying case)
psi basic mass set, pneumatic (incl.
carrying case)
1) Theroretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics more masses should be loaded.
2) The smallest pressure change value that can be achieved based on the standard mass set. To reduce this, a set of ne increment masses is also available.
3) The accuracy from 10 % of the measuring range is based on the measured value. In the lower range, a xed error based on 10 % of the range applies.
4) Measurement uncertainty assuming reference conditions (ambient temperature 20 °C ( 68 °F), atmospheric pressure 1,013 mbar (14.69 psi), relative humidity 40 %). For operation
without a CalibratorUnit, corrections must be made if required.
psi extension mass set 1,
pneumatic (incl. carrying case)
psi extension mass set 2,
pneumatic (only for 1,500 psi)
(incl. carrying case)
psi basic mass set, hydraulic (incl.
carrying case)
psi extension mass set, hydraulic
(incl. carrying case)
Dimensions (W x H x D)
Carrying case for basic mass set400 x 310 x 310 mm (15.8 x 12.2 x 12.2 in)
Carrying case for extension mass set 215 x 310 x 310 mm (8.5 x 12.2 x 12.2 in)
Storage case for the piston-cylinder
system (optional)
1) Theroretical starting value; corresponds to the pressure value generated by the piston (by its own weight). To optimise the operating characteristics more masses should be loaded.
2) The smallest pressure change value that can be achieved based on the standard mass set. To reduce this, a set of ne increment masses is also available.
3) The accuracy from 10 % of the measuring range is based on the measured value. In the lower range, a xed error based on 10 % of the range applies.
4) Measurement uncertainty assuming reference conditions (ambient temperature 20 °C ( 68 °F), atmospheric pressure 1,013 mbar (14.69 psi), relative humidity 40 %). For operation
without a CalibratorUnit, corrections must be made if required.
11.0 kg (24.3 lbs)
18.5 kg (40.9 lbs)
42.0 kg (92.8 lbs)
21.5 kg (47.5 lbs)
300 x 265 x 205 mm (11.8 x 10.4 x 8.1 in)
Base, model CPB5000
Base version
Pneumatic, low pressureup to max. 10 bar (150 psi); with internal pressure generation
Pneumatic, high pressure/vacuumup to max. 100 bar (1,500 psi); for external supply and vacuum
Pneumatic, with separatorup to max. 400 bar (5,000 psi);
for external supply with integrated gas to oil separator
for use with hydraulic pistons with M30 x 2 connection
Pressure transmission medium
PneumaticClean, dry, non-corrosive gases (e.g. air or nitrogen)
Connections
Connection for piston-cylinder systemStandard: M30 x 2 female thread
Option: ConTect quick-release connector
Test item connectionQuick connector G ½ B female thread as standard, freely rotating, changeable, for further
threaded inserts, see accessories
®
External pressure connection6 mm SWAGELOK
range;
only with pneumatic high-pressure/vacuum base version and with separator
Material
Piping in basepneumatic low pressure: plastic tubing from polyeurethane, 4 x 0.75 mm
pneumatic high pressure/vacuum and with separator: 1.4571 stainless steel, 3 x 1 mm
Weight
Pneumatic base, low pressure
18.0 kg / 19.0 kg / (39.8 lbs / 42.0 lbs)
(incl. optional ConTect quick-release connector)
Pneumatic base, high pressure
18.0 kg / 19.0 kg / (39.8 lbs / 42.0 lbs)
(incl. optional ConTect quick-release connector)
Pneumatic base, separator16.5 kg (36.5 lbs)
Permissible ambient conditions
Operating temperature18 ... 28 °C (64 ... 82 °F)
Dimensions (W x H x D)
Base401 x 375 x 265 mm (15.8 x 14.8 x 10.4 in), for details, see technical drawings
threaded pipe connection; max. 110 % of the assigned measuring
Page 6 of 12WIKA data sheet CT 31.01 ∙ 03/2016
Page 7
Approvals
LogoDescriptionCountry
EC declaration of conformity
Pressure equipment directive
Uzstandard
Metrology/measurement technology
-MTSCHS
Permission for commissioning
European Community
Uzbekistan
Kazakhstan
Certicates
Certicate
CalibrationStandard: 3.1 calibration certicate per DIN EN 10204
Option: DKD/DAkkS calibration certicate
Recommended recalibration interval2 to 5 years (dependent on conditions of use)
Approvals and certicates, see website
Transport dimensions for complete instrument
The complete instrument, in its standard version and standard scope of delivery, consists of 3 packages on a single pallet.
The dimensions are 1,200 x 800 x 500 mm (47.3 x 31.5 x 19.7 in).
The overall weight is dependent on the measuring range.
Version in barWeight
netgross
Pneumatic
-1 bar32.5 kg (71.8 lbs)47.5 kg (105.0 lbs)
2 bar / 10 bar / 50 bar36.0 kg (79.6 lbs)51.0 kg (112.7 lbs)
100 bar50.0 kg (110.5 lbs)65.0 kg (143.7 lbs)
Pneumatic with separator
60 bar / 250 bar54.0 kg (119.3 lbs)69.0 kg (152.5 lbs)
100 bar / 400 bar78.0 kg (172.4 lbs)93.0 kg (205.5 lbs)
Hydraulic with CPB5800 base
60 bar / 250 bar / 600 bar56.5 kg (124.9 lbs)71.5 kg (158.0 lbs)
100 bar / 400 bar / 1,000 bar80.5 kg (177.9 lbs)95.5 kg (211.1 lbs)
Version in psiWeight
netgross
Pneumatic
-14 psi32.0 kg (70.7 lbs)47.0 kg (103.9 lbs)
30 psi / 150 psi / 1,000 psi43.0 kg (95.0 lbs)58.0 kg (128.2 lbs)
500 psi32.0 kg (70.7 lbs)47.0 kg (103.9 lbs)
1,500 psi61.5 kg (135.9 lbs)76.5 kg (169.1 lbs)
Pneumatic with separator
1,000 psi / 5,000 psi60.0 kg (132.6 lbs)75.0 kg (165.8 lbs)
Hydraulic with CPB5800 base
1,000 psi / 5,000 psi / 10,000 psi62.5 kg (138.1 lbs)77.5 kg (171.3 lbs)
14,500 psi84.0 kg (185.6 lbs)99.0 kg (218.8 lbs)
WIKA data sheet CT 31.01 ∙ 03/2016Page 7 of 12
Page 8
262,5 (10,33)
400 (15,75)
Dimensions in mm (in)
The gure shows a CPB5000 pneumatic high-pressure base unit with the ConTect quick-release connector option. The
versions for pneumatic low pressure and pneumatic with integrated gas to oil separator do not dier from it dimensionally, only
in the arrangement of the control elements.
Side view (left)Front view
1234
Ø 432,5 (17,03)
129 (5,08)
56
375 (14,76)
447 (17,6)
Top view
784
275 (10,83)
Pneumatic base, low pressure
50
(1,97)
105 (4,13)
310 (12,20)
Test item connection
Threaded insert,
changeable
Quick-release
connector with
knurled nut
O-ring 8 x 2
Pneumatic base with integrated gas to oil separator
Top viewTop view
10
9
1
9
1
3
1
2
3
4
5
Outlet valve
Test pressure gauge
Inlet valve (not for pneumatic low pressure)
Test item connection
Rotatable feet
6
Spindle pump with star handle, removable
7
Connector for piston-cylinder system
8
Level
9
Priming pump
10
Connector for piston-cylinder system with integrated gas to oil
separator
Page 8 of 12WIKA data sheet CT 31.01 ∙ 03/2016
Page 9
CalibratorUnit model CPU6000
The models of the CPU6000 series are compact tools for use
with a pressure balance (dead-weight tester). In particular
when highly accurate measuring values, with measurement
uncertainties of less than 0.025 %, are required, complicated
mathematical calculations and corrections are necessary.
With the CPU6000 in combination with the CPB-CAL (iPad
app) and/or WIKA-CAL (PC software) all critical ambient
parameters can be registered and automatically corrected.
®
The CPU6000 series is made up of three
instruments
Weather station, model CPU6000-W
The CPU6000-W provides measured values such as
atmospheric pressure, relative humidity and the ambient
temperature of the laboratory environment.
Pressure balance sensor box, model CPU6000-S
The CPU6000-S measures the piston temperature and
displays the oating position of the masses.
Digital multimeter, model CPU6000-M
The CPU6000-M fulls the function of a digital multimeter
and power supply unit when electronic pressure transmitters
must be calibrated.
CPU6000 series and iPad® app CPB-CAL
Typical application
CPB-CAL iPad® app
The iPad
balances (dead-weight testers) or the reference pressure
while taking the measured parameters from the CPU6000
into account. The conversion can be carried out in all
common pressure units. As an additional parameter, the local
gravity can be given for location-independent measurements.
WIKA-CAL PC software - Weight calculator
With the demo version of the WIKA-CAL software and a CPB
series pressure balance (dead-weight tester), the masses to
be applied and the corresponding reference pressure can be
determined. The pressure balance data (dead-weight tester
data) can be entered into the database manually or imported
automatically via an XML le available online.
All ambient parameters and piston temperature can be
entered manually into WIKA-CAL or can be measured
automatically with the CPU6000 series, so that the highest
accuracy can be achieved. WIKA-CAL demo version can be
downloaded free of charge from the WIKA website.
Further specications on the CPU6000 series can be found
in data sheet CT 35.02.
For details of the WIKA-CAL calibration software see data
sheet CT 95.10.
®
application calculates the masses for pressure
Model CPU6000-W, CPU6000-S, CPB5800 and PC with
WIKA-CAL software
WIKA-CAL PC software - Weight calculator
WIKA data sheet CT 31.01 ∙ 03/2016Page 9 of 12
Page 10
Further pressure balances / dead-weight testers within our calibration technology
programme
Dead-weight tester in compact design, model CPB3800
Measuring ranges:
Hydraulic1 ... 120 to 10 ... 1,200 bar
(10 ... 1,600 to 100 ... 16,000 psi)
Accuracy:0.05 % of reading
0.025 % of reading (optional)
For specications see data sheet CT 31.06
Hydraulic pressure balance, model CPB5800
Measuring ranges:
HydraulicSingle-piston measuring ranges:
1 ... 120 to 2 ... 300 bar
(10 ... 1,600 to 30 ... 4,000 psi)
Dual-piston measuring ranges:
1 ... 60 bar / 10 ... 700 bar to
1 ... 60 bar / 20 ... 1,400 bar
(10 ... 800 psi / 100 ... 10,000 psi to
10 ... 800 psi / 200 ... 20,000 psi)
Accuracy:0.015 % of reading
up to 0.006 % of reading (optional)
For specications see data sheet CT 31.11
Pressure balance for high pressure, model CPB5000HP
Dead-weight tester in compact design, model CPB3800
Hydraulic pressure balance, model CPB5800
Measuring ranges:
Hydraulic25 ... 2,500, 25 ... 4,000 or 25 ... 5,000 bar
Pressure balance for high pressure, model CPB5000HP
Pressure balance for dierential pressure,
model CPB5600DP
Page 10 of 12WIKA data sheet CT 31.01 ∙ 03/2016
Page 11
Accessories
Set of ne increment masses M1 and F1
The masses included in the standard scope of delivery are
ideally suited for everyday use. If even smaller intermediate
values need to be generated, using one of the class M1 or
F1 set of ne increment masses with the following masses is
recommended:
1 x 50 g, 2 x 20 g, 1 x 10 g, 1 x 5 g, 2 x 2 g, 1 x 1 g,
1 x 500 mg, 2 x 200 mg, 1 x 100 mg, 1 x 50 mg, 2 x 20 mg,
1 x 10 mg, 1 x 5 mg, 2 x 2 mg, 1 x 1 mg
Adapter sets for quick-release connector
As a standard, the pressure balance is equipped with a
quick-release connector for connecting the test item. For this
purpose, the following threaded inserts, which can be easily
changed, are available:
■
Adapter set: G ¼, G ⅜, ½ NPT, ¼ NPT and M20 x 1.5
■
Adapter set NPT: ⅛ NPT, ¼ NPT, ⅜ NPT and ½ NPT
Additionally, the adapter sets include spare O-rings as well
as a spanner with SW32 ats and SW14 ats, for changing
the adapters.
Other threaded inserts are available on request.
Set of ne increment masses
Adapter set
Dirt trap
For strongly soiled test items, a dirt trap should be used. This
helps prevent the ingress of contaminants into the pressure
balance.
Dirt trap
Designation/VersionOrder no.
Set of ne increment masses (1 mg up to 50 g), class F17093874
Set of ne increment masses (1 mg up to 50 g), class M114025325
Adapter set for quick-release connector in case with G ¼, G ⅜, ½ NPT, ¼ NPT and M20 x 1.5 threaded inserts for
insertion in the knurled nut on the test item connector
Adapter set “NPT” for quick-release connector in case with ⅛ NPT, ¼ NPT, ⅜ NPT and ½ NPT threaded inserts for
insertion in the knurled nut on the test item connector
90° angle connection, for test items with back mounting connection1564838
O-ring set consisting of 5 pcs. 8 x 2 and 5 pcs. 4 x 2.212328562
Operating uid for CPB5000 up to max. 4,000 bar (60,000 psi), 1 litre2099882
Cleaning set for ConTect systems, pneumatic12485943
Cleaning set for ConTect systems, hydraulic12481425
Special test port with quick-release connector, for connection to the ConTect system entry, operation as a comparison test pump is possible
2036941
12563626
2152634
WIKA data sheet CT 31.01 ∙ 03/2016Page 11 of 12
Page 12
Scope of delivery
Options
■
Base with dust protection cover
■
Priming pump (not on pneumatic base high pressure/
vacuum)
■
Spindle pump for lling, pressure generation and ne
pressure adjustment
■
Piston connection with M30 x 2 female thread
■
Quick connector for test items
■
Piston-cylinder system with mass carrier
■
Basic mass set in carrying case
■
Extension mass set in carrying case (depending on the
measuring range)
■
Masses manufactured to local gravity (standard value:
9.80665 m/s²)
■
VG22 mineral oil, 0.25 litre (for separator version)
■
Sealing set for base CPB5000
■
Operating instructions in German and English language
■
Factory calibration certicate
■
Systems with increased accuracy to 0.008 %
■
Further pressure units
■
Piston connection with ConTect quick-release connector
■
Storage case for piston-cylinder systems
■
Masses, manufactured to local gravity
■
Tool set
■
DKD/DAkkS calibration certicate
Ordering information
Instrument base
CPB5000 / Instrument version / Connection of the piston-cylinder system / Piston-cylinder system / Mass set in carrying case /
Calibration for mass set / Additional ordering information
Piston-cylinder system
CPS5000 / Version / Connection of the piston-cylinder system / Accuracy / Measuring range / Storage case for piston-cylinder
systems / Calibration for ConTect system / Additional ordering information
The specications given in this document represent the state of engineering at the time of publishing.
We reserve the right to make modications to the specications and materials.