Page 1
Dead-weight tester
High-pressure version
Model CPB3800HP
for further approvals
see page 5
Applications
■
Primary standard for calibrating the pressure scale in a
hydraulic range up to 2,600 bar (40,000 lb/in²)
■
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
WIKA data sheet CT 31.07
Special features
■
Total measurement uncertainty up to 0.01 % of reading
■
Dual-range piston-cylinder system 2,600 bar
(40,000 lb/in²) with fully automated changing between
ranges
■
Factory calibration includes traceability to national
standards, as standard, with UKAS calibration possible as
an option
■
Masses manufactured from stainless steel, can be
adjusted to local gravity
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.
Stand-alone operation
Due to its integrated pressure generation and the purely
mechanical measuring principle, the model CPB3800HP is
ideal for on-site use for maintenance and service.
Dead-weight tester, high-pressure version, model
CPB3800HP
Basic principle
Pressure is dened as the quotient of force and area. The
core component of the CPB3800HP 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 UKAS calibrated.
WIKA data sheet CT 31.07
Data sheets showing similar products and accessories:
Dead-weight tester in compact design; model CPB3800; see data sheet CT 31.06
Pneumatic dead-weight tester; model CPB3500; see data sheet CT 31.22
Hydraulic pressure balance; model CPB5800; see data sheet CT 31.11
Pressure balance in high-pressure version; model CPB5000HP; see data sheet CT 31.51
CalibratorUnit; model CPU6000; see data sheet CT 35.02
∙ 03/2018
Page 1 of 10
Page 2
Easy operation
The integrated dual-area spindle pump enables rapid lling
of the test system and smooth pressure generation up to
2,600 bar (40.000 lb/in²). At the same time, the precisely
adjustable spindle pump also enables ne pressure
adjustment. A control schematic for pressure generation on
the instrument base facilitates quick and easy operation.
As soon as the measuring system reaches equilibrium, there
is a balance of forces between the pressure and the masses.
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.
Compact instrument design
The CPB3800HP is also particularly notable for its compact
dimensions, which are not altered during operation, since the
spindle runs within the pump body.
With its compact dimensions, the exceptionally robust ABS
plastic case and the low weight associated with these,
the CPB3800HP is also particularly suited for on-site
applications.
Control schematic on the CPB3800HP instrument base
Force F
The test item connection is equipped with a G ½ union nut
with metal cone. M16 x 1.5, M20 x 1.5 und 9/16-18 UNF
thread adapters with male threads are included in the scope
of delivery.
The piston-cylinder system
High accuracy over a wide measuring range
The dual-range piston-cylinder system oers two measuring
ranges in one case with automatic measuring range
switching from low-pressure to high-pressure pistons. This
provides the user with an extremely exible measuring
instrument that can cover a wide measuring range with high
accuracy, with only one piston-cylinder system and one
mass set. Additionally two test points can automatically be
achieved by loading the masses once.
Both the piston and cylinder are manufactured from
hardened steel or tungsten carbide, respectively. This
pairings of 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
stainless-steel/hardened tool steel 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.
1
2
Pressure p
Dual-range piston-cylinder system 2,600 bar
(40,000 lb/in²)
The masses are stacked directly onto the piston shaft. This
makes it easier to place the masses on and thus enables a
lower start value.
The overall design of the piston-cylinder system and the very
precise manufacturing of both the piston and the cylinder,
ensure exceptionally low friction force, which results in
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 depending on the conditions of use.
1
High-pressure piston
2
Low-pressure piston = High-pressure cylinder
WIKA data sheet CT 31.07 ∙ 03/2018 Page 2 of 10
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
For the measurement of the ambient conditions, the
CPU6000 CalibratorUnit can be used, see page 7.
nominal pressures for the respective measuring ranges.
The masses are manufactured, as standard, to the standard
Should the instrument not be operated under reference
conditions (ambient temperature 20 °C [68 °F], atmospheric
gravity (9.80665 m/s²) although they can be adjusted for any
local gravity.
pressure 1,013 mbar [14.69 psi], relative humidity 40 %), the
measured values must be corrected arithmetically.
Measuring range
[bar]
1 … 60 20 ... 2,600
1 … 2,600
Quantity Nominal pressure per piece Nominal pressure per piece
[bar] [bar]
Piston and make-up weight 1 1 20
Mass carrier 1 10 200
Masses (stackable on mass carrier) 7 10 200
Masses (stackable on piston shaft) 3 10 200
1 9 180
1 5 100
2 2 40
1 1 20
2 0.5 10
Set of ne increment masses
(optional)
2 0.2 4
1 0.1 2
1 0.05 1
2 0.02 0.4
1 0.01 0.2
Measuring range
[lb/in²]
10 … 800 200 ... 40,000
10 ... 40,000
Quantity Nominal pressure per piece Nominal pressure per piece
[lb/in²] [lb/in²]
Piston 1 10 200
Mass carrier 1 100 2.000
Masses (stackable on mass carrier) 14 100 2.000
Masses (stackable on piston shaft) 4 100 2.000
1 90 1.800
1 50 1.000
2 20 400
1 10 200
1 5 100
Set of ne increment masses
(optional)
WIKA data sheet CT 31.07 ∙ 03/2018 Page 3 of 10
2 2 40
1 1 20
1 0.5 10
2 0.2 4
1 0.1 2
Page 4
Specications
Model CPB3800HP
Piston-cylinder system
3) 4)
3) 4)
1)
2)
1)
2)
1 … 60 bar / 20 … 2,600 bar
0.5 bar / 10 bar
10 … 800 lb/in² / 200 … 40,000 lb/in²
5 lb/in² / 100 lb/in²
0.025 % of reading
0.01 % of reading
[15.8 x 12.2 x 12.2 in]
[8.5 x 12.2 x 12.2 in]
Measuring range
Required masses 107 kg
Smallest step
(Standard mass set)
Nominal eective area of the piston 1/8 in² / 1/160 in²
Measuring range
Required masses 119 kg
Smallest step
(Standard mass set)
Nominal eective area of the piston 1/8 in² / 1/160 in²
Accuracies
Standard
Premium
Pressure transmission medium Hydraulic uid based on VG22 mineral oil (0.5 litre included in scope of delivery)
Material
Piston Tungsten carbide / steel
Cylinder Steel / tungsten carbide
Weight
Piston-cylinder system 2 kg [4.4 lbs]
bar mass set, box 1 43.3 kg [95.5 lbs]
bar mass set, box 2 29.7 kg [65.5 lbs]
bar mass set, box 3 29.4 kg [64.8 lbs]
bar mass set, box 4 29.4 kg [64.8 lbs]
lb/in² mass set, box 1 40.5 kg [89.3 lbs]
lb/in² mass set, box 2 33.6 kg [74.1 lbs]
lb/in² mass set, box 3 33.6 kg [74.1 lbs]
lb/in² mass set, box 4 31.6 kg [69.7 lbs]
Dimensions (W x D x H)
Carrying case 1 for mass set (optional) 400 x 310 x 310 mm
Carrying case 2 - 4 for mass set (optional) 215 x 310 x 310 mm
1) Theoretical starting value; corresponds to the pressure value generated by the piston or the piston and its make-up weight (by their 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 part the accuracy is 0.025 % of reading.
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.
Base
Connections
Connection for piston-cylinder system G ¾ B (male)
Test connection G ½ union nut with metal cone, with three thread adapters as standard
M16 x 1.5 / M20 x 1.5 and 9/16-18 UNF
Material
Wetted parts Austenitic stainless steel, high tensile brass, nitrile rubber
Pressure transmission medium Hydraulic uid based on VG22 mineral oil (0.5 l included in scope of delivery)
Reservoir 170 cm³
WIKA data sheet CT 31.07 ∙ 03/2018 Page 4 of 10
5)
Page 5
Base
Weight
Base 13.5 kg [29.8 lbs]
Permissible ambient conditions
Operating temperature 18 ... 28 °C [64 ... 82 °F]
Dimensions (W x D x H)
Base 401 x 397 x 155 mm [15.8 x 15.7 x 6.1 in], for details, see technical drawings
5) Other pressure transmission media on request.
Approvals
Logo Description Country
EU declaration of conformity
Pressure equipment directive (Module A)
EAC
■
EMC directive
■
Pressure equipment directive
■
Low voltage directive
■
Machinery directive
UkrSEPRO
Metrology, measurement technology
- MTSCHS
Permission for commissioning
European Union
Eurasian Economic Community
Ukraine
Kazakhstan
Certicates
Certicate
Calibration
CPB3800HP Standard: Calibration certicate
Option 1: UKAS calibration certicate (pressure calibration with a mass set)
Option 2: UKAS calibration certicate (area and mass calibration)
Set of ne increment masses Standard: Calibration certicate
Option 1: UKAS calibration certicate (pressure calibration with a piston-cylinder system)
Option 2: UKAS calibration certicate (mass calibration)
Recommended recalibration interval 2 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, is shipped on two pallets.
The dimensions are 1.200 x 800 x 500 mm [47.2 x 31.5 x 19.7 in] and 800 x 600 x 500 mm [31.5 x 23.6 x 19.7 in].
The overall weight is dependent on the measuring range.
Version Weight
net gross
1 … 60 / 20 … 2,600 bar 169 [372.6 lbs] 207 kg [456.4 lbs]
10 … 800 / 200 … 40,000 lb/in² 177 [390.3 lbs] 215 kg [474.1 lbs]
WIKA data sheet CT 31.07 ∙ 03/2018 Page 5 of 10
Page 6
93 [3.66]
Dimensions in mm [in]
(without masses)
1
133 [5.24]
145 [5.71]
401 [15.79]
108 [4.25]
A
A
B
P
R
A B P P
0-140bar
²
0-2000lb/in
140bar +
2000lb/in
² +
0
CPB3800HP
AB P
BA P
AP B
R
143 [5.63]
Ø 358 [17.09]
2
397 [15.63]
83 [3.27]
3
1
203 [7.99]
183 [7.20]
171 [3.73]
22 [0.87]
4
Piston connection
5
6
7
8
1
Test connection
2
Dual-area spindle pump with star handle
3
Rotatable feet
4
High-pressure shut-o valve
5
Reservoir with plug screw
6
Low-pressure shut-o valve
7
Pressure generation control schematic
8
Oil collecting tray
9
Adapter, see scope of delivery
10
Standard connection piston-cylinder system Test connection
10
9
9
WIKA data sheet CT 31.07 ∙ 03/2018 Page 6 of 10
Page 7
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 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
Typical application
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.
Model CPU6000-W, CPU6000-S, CPB5800 and PC with
WIKA-Cal software
WIKA-Cal PC software - Weight calculator
WIKA data sheet CT 31.07 ∙ 03/2018 Page 7 of 10
Page 8
Further pressure balances (dead-weight testers) within our calibration technology
programme
Dead-weight tester, model CPB3800
Measuring ranges:
Hydraulic 1 ... 120 to 10 ... 1.200 bar
(10 ... 1.600 to 100 ... 16.000 lb/in²)
Accuracy: 0.05 % of reading
0.025 % of reading (optional)
For specications see data sheet CT 31.06
Dead-weight tester, model CPB3500
Measuring ranges:
Pneumatic -0.015 ... -1 to +1... +120 bar
(1 ... 100 to 10 ... 1,600 lb/in²)
Accuracy: 0.015 % of reading
up to 0.006 % of reading (optional)
For specications see data sheet CT 31.22
Pressure balance, model CPB5800
Measuring ranges:
Hydraulic Single-piston measuring ranges:
1 ... 120 to 2 ... 300 bar
(10 ... 1,600 to 30 ... 4,000 lb/in²)
Dual-piston measuring ranges:
1 ... 60 bar / 10 ... 700 bar to
1 ... 60 bar / 20 ... 1,400 bar
(10 ... 800 lb/in² / 100 ... 10,000 lb/in² to
10 ... 800 lb/in² / 200 ... 20,000 lb/in²)
Accuracy: 0.015 % of reading
up to 0.006 % of reading (optional)
Dead-weight tester, model CPB3800
Dead-weight tester, model CPB3500
For specications see data sheet CT 31.11
Pressure balance for high pressure, model CPB5000HP
Measuring ranges:
Hydraulic 25 ... 2,500, 25 ... 4,000 or 25 ... 5,000 bar
(350 ... 40,000, 350 ... 60,000 or
350 ... 70,000 lb/in²)
Accuracy: 0.025 % of reading
0.02 % of reading (optional)
For specications see data sheet CT 31.51
WIKA data sheet CT 31.07 ∙ 03/2018 Page 8 of 10
Pressure balance, model CPB5800
Pressure balance for high pressure,
model CPB5000HP
Page 9
Mass sets
Set of ne increment masses M1 and F1
The masses included in the standard mass set 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
Accessories Bestellcode
Fine increment masses in bar (smallest step 0.1 / 2 lb/in²) CPB-A-CC-ZZ7ZZZ-Z
Fine increment masses in bar (smallest step 0.01 / 0.2 bar) CPB-A-CC-ZZ6ZZZ-Z
1 storage case for instrument base (and CPB3800HP piston-cylinder system) CPB-A-CC-ZZ8ZZZ-Z
Four ight cases for mass set CPB-A-CC-ZZ9ZZZ-Z
Adapter for connection column, G ½ female thread with o-ring, max. 1,600 bar, mat.: 1.4571 CPB-A-CC-ZZFZZZ-Z
Adapter for connection column, 9/16-18 UNF male thread with sealing cone, mat.: hardened stainless steel CPB-A-CC-ZZEZZZ-Z
Adapter for connection column, M20 x 1.5 male thread with sealing cone, mat.: hardened stainless steel CPB-A-CC-ZZDZZZ-Z
Adapter for connection column, M16 x 1.5 male thread with sealing cone, mat.: hardened stainless steel CPB-A-CC-ZZCZZZ-Z
Dual range piston-cylinder system 1 … 50 / 20 … 2,600 bar CPB-A-CC-ZZ2ZZZ-Z
Dual range piston-cylinder system 10 … 600 / 200 … 40,000 lb/in² CPB-A-CC-ZZ3ZZZ-Z
Sealing and maintenance set for instrument base CPB-A-CC-ZZBZZZ-Z
Hydraulic uid based on VG22 mineral oil in plastic bottle, content 0.5 litre CPB-A-CC-ZZAZZZ-Z
Tool set consisting of open-ended spanners, replacement seals, pointer remover and pointer punch CPB-A-CC-ZZGZZZ-Z
Set of ne increment masses
WIKA data sheet CT 31.07 ∙ 03/2018 Page 9 of 10
Page 10
Scope of delivery
Options
■
Base
■
Dual-area spindle pump for lling, pressure generation
and ne pressure adjustment
■
Piston connection with G ¾ B male thread
■
Test connection with G ½ union nut with metal cone
and three thread adapters M16 x 1.5 / M20 x 1.5 and
9/16-18 UNF
■
Piston-cylinder system
■
Masses manufactured to standard gravity
(standard value: 9.80665 m/s²)
■
VG22 mineral oil (0.5 litre)
■
Tool and maintenance set consisting of:
- 1 hexagon wrench key 3 mm A/F
- 2 x 30 mm A/F open-ended spanners
- 1 spirit level
- 4 level plates
- 1 set of hardened steel sealing rings
- 1 set of replacement seals for base
■
Operating instructions
■
Factory calibration certicate
■
Systems with increased accuracy to 0.01 %
■
Further pressure transmission media
■
Further pressure units
■
Masses manufactured to local gravity
■
Set of ne increment masses
■
Further tools:
- G ½ (½" BSP) angle connection
- Pointer punch
- Pointer remover
- Test item connection
■
UKAS calibration certicate
Ordering information
Model / Package / Accuracy / Gravity value g / Fine increment masses / Storage case / Calibration for dead-weight tester /
Calibration for ne increment masses / Accessories / Further approvals / Additional ordering information
© 02/2015 WIKA Alexander Wiegand SE & Co. KG, all rights reserved.
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
WIKA data sheet CT 31.07 ∙ 03/2018 Page 10 of 10
03/2018 EN
WIKA Alexander Wiegand SE & Co. KG
Alexander-Wiegand-Straße 30
63911 Klingenberg/Germany
Tel. +49 9372 132-0
Fax +49 9372 132-406
info@wika.de
www.wika.de
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