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Hydraulic pipeline tester
Model 80, high-pressure version
Model 80L, low-pressure version
Applications
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Leak and yield strength testing
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Detection of frictional pressure losses along pipelines
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Monitoring of gas pressure associated with ow metering
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Measurement of well head gas pressure and hydraulic test
pressure of riser pipe
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Measurement of steam pressure for eciency testing
Special features
Calibration technology
WIKA data sheet CT 31.21
■
Ranges: from 30 ... 600 bar (model 80) and from
7 ... 120 bar (model 80L)
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Accuracy: 0.03 % + 0.05 bar (model 80) and 0.04 %
+ 0.015 bar (model 80L)
■
Ergonomic layout ideal for eld use
■
All instruments supplied with certication traceable to
national standards
■
UKAS certicate is available through our pressure
standards laboratory as an optional extra
Description
Accurate measurement of pressures
The hydraulic pipeline tester is a portable unit suitable for the
accurate measurement of arbitrary and uctuating pressure,
which occur in power plants, pipelines and many other appli-
cations.
Basic principle
To measure a pressure, masses are added to the piston unit
corresponding to a pressure just below that to be measured.
The total downward force of the masses is then in excess of
the pressure to be measured and is balanced by the pressure
produced by the spindle pump applied to the stepped area
of the piston which pushes it upwards. This low pressure
is indicated on the precision dial pressure gauge specially
Hydraulic pipeline tester, model 80
graduated so that the reading of the gauge only is added to
the pressure equivalent of the masses used. The weight of
the mass carrier corresponds to the scale range of the dial
gauge and is ignored.
Traceable to national standards
The piston unit and test masses supplied with this pipeline
tester have been calibrated against standards which are
traceable to National Standards.
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Principle of operation
The pressure to be measured ‘P’ is applied to a stepped
piston and an area ‘a’ loaded with masses ‘W’. The masses
‘W’ are greater than the force on the piston ‘Pa’. A small
pressure ‘p’ is then applied to the annulus (area ‘b’) until the
masses rise, the piston is then in equilibrium and W = Pa
+ pb. The term ‘pb’ is in this instrument ‘small’ and so the
pressure ‘P’ can be determined accurately by knowledge of
the mass ‘W’ and the area ‘a’.
The pressure is applied to a gauge calibrated to suit the
instrument thus giving ‘pb’. Therefore having known areas ‘a’
and ‘b’ (see table below), the pressure is ‘P’ = (W - pb) / a.
Weight ‘W’
Area ‘b’
Nominal areas
Model 80 Model 80L
‘a’ = 1/80 in² (8.0645 mm²) ‘a’ = 1/8 in² (8.0645 mm²)
‘b’ = 9/80 in² (72.805 mm²) ‘b’ = 1/16 in² (40.3225 mm²)
Table of masses
The following table shows, for the respective measuring
range, the number of masses within a set of masses, with
their resulting nominal pressures.
Area ‘a’
Pressure ‘p’
Pressure ‘P’
The mass sets can be manufactured as standard, to the
standard gravity (9.80665 m/s²) although they can be
adjusted for any particular location.
Model 80 Model 80L
Quantity Nominal
pressure per
piece
in bar
Piston and make-up weight 1 10 1 1,000 1 1 - -
Masses (stackable on piston) 4 100 7 1,000 4 20 7 200
1 90 1 500 1 18 1 100
1 50 2 200 1 10 1 50
2 20 1 100 2 4 2 20
1 10 1 50 1 2 1 10
1 5 - - 1 1 - -
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Quantity Nominal
pressure per
piece
in lb/in²
Quantity Nominal
pressure per
piece
in bar
Quantity Nominal
pressure per
piece
in lb/in²
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Specications
Model 80 Model 80L
Measuring range bar lb/in² bar lb/in²
Standard pressure range 30 ... 300 500 ... 4,000 7 ... 60 100 ... 800
Extended pressure range 30 ... 600 500 ... 8,000 7 ... 120 100 ... 1,600
Accuracies 0.03 % + 0.05 bar 0.03 % + 0.7 lb/in² 0.04 % + 0.015 bar 0.04 % + 0.2 lb/in²
Resolution 0.02 bar 0.2 lb/in² 0.005 bar 0.05 lb/in²
Pressure transmission medium Hydraulic mineral oil viscosity 20 to 37 cSt at 40 °C (for details please see the operation
instructions), water, air
Reservoir approx. 60 cm³
Material
Piston Steel Steel
Cylinder Carbide Steel
Masses Austenitic stainless steel Austenitic stainless steel
Weight
Standard mass set 29 kg 35 kg 29 kg 35 kg
Extended mass set 52 kg 57 kg 52 kg 57 kg
Connections
Connection for piston-cylinder system G 3/4 B male
Plant (input) G 1/4 female
Drain (output) G 1/4 female
Permissible ambient conditions
Operating temperature 18 ... 28 °C
Case
Material Steel
Dimensions 500 x 440 x 450 mm (W x D x H) for details, see technical drawings
Weight 30 kg
Approvals and certicates
Certicate
Calibration
Standard: Factory calibration certicate
Option: UKAS calibration certicate
Approvals and certicates, see website
Transport dimensions for complete instrument
The complete instrument, in its standard version and standard scope of delivery, is shipped in three cartons.
The dimensions are 320 x 320 x 280 mm and 790 x 790 x 580 mm.
The overall weight is dependent on the measuring range.
Weight in kg Weight in kg
Version in bar net gross Version in lb/in² net gross
Model Model
80 (30 ... 300 bar), 80L (7 ... 60 bar) 59 67 80 (500 ... 4,000 lb/in²), 80L (100 ... 800 lb/in²) 65 73
80 (30 ... 600 bar), 80L (7 ... 120 bar) 82 90 80 (500 ... 8,000 lb/in²), 80L (100 ... 1,600 lb/in²) 87 95
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Instrument base
Components
3
2
1
4
5
6
7
8
9
(1) Pressure cap
(2) Bleed screw
(3) Piston unit
(4) Oil seal
(5) Dial pressure gauge
(6) Reservoir valve
10
1112
(7) Compensator reservoir
(8) Compensator
(9) Transparent plastic pipes
(10) Plant valve
(11) Drain valve
(12) Pressure chamber
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Dimensions in mm
Front viewSide view (with case dimension)
Top viewSide view
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Scope of delivery
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Model 80, hydraulic pipeline tester high-pressure version
or model 80L, hydraulic pipeline tester low-pressure
version (tted with blanking plug)
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Piston-cylinder unit with oil seal (tted with blanking plug)
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Mass set supplied in separate carrying case
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500 ml bottle of hydraulic mineral oil
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Set of pipes for air, gas or water operation, comprising two
pipes and one bonded seal
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Spirit level
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Factory calibration certicate
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Operation instructions
Options
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UKAS calibration certicate (pressure calibration)
Hydraulic pipeline tester, model 80 with transport case
© 2014 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.
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WIKA data sheet CT 31.21 ∙ 09/2014
09/2014 GB
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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