special application testers
What we offer?
Budenberg offers wide range of special application testers which include portable dead-weight testers – Gauge pressure & Differential pressure, Differential Pressure on High static Pressure on gas, Pipeline testers for hydraulic and gas applications and Force Tester.
This is a compact Hydraulic (Oil) Dead-Weight tester for producing low pressure to calibrate pressure gauges, pressure switches, pressure transmitters etcetera. The tester base is fitted into a weather proof case for portability and ease of operation.
Being a fundamental Standard it is more dependable and gives very high accuracy than low accuracy test gauges whose sensitive pressure elements and mechanisms can be easily damaged.
The BGH600 Portable Dead Weight Tester is a fully self-contained primary pressure standard for use in laboratory or workshop where its ease of use and its accuracy make it preferable to any other low pressure measuring instrument.
Its ergonomic carry cases contain the piston cylinder unit, mass set, tester base with screw press pump & needle release valve; everything needed to carry out on-site, high accuracy pressure calibrations. These features are especially useful when testing electronic transducers, transmitters and switches without removing them from their installed position.
The unit can be used extensively in the chemical, gas, petroleum, power generation and water industries.
BGH600 is available in all standard pressure units. Fine increment weights are supplied, if ordered separately.
Accuracy
Standard accuracy is 0.03% from 1 to 6 bar and 0.02% from 6 to 40 bar
Class A Accuracy up to 80ppm (0.008% of reading).
Certification
Standard Accuracy Tester is supplied with Factory Calibration Certificate traceable to National Standards.
Class A Accuracy Tester is supplied with UKAS Area & Mass Certificate.
Software
Accuracy software is available with Class ‘A’ accuracy only for correction of Piston unit temperature, Pressure Head, Ambient Pressure, Ambient Temperature & local gravity.
Standard Accessories
Tool Roll, 500ml ISO VG22 oil, and NPT or BSP adaptor set (as ordered). Weight set in weather proof carry case, Soft copy of the Operation Manual on pen drive with Certificate of Accuracy.
Packing
2 Cartons on a pallet, 62 x 80 x 100 cm, gross weight 61 kg, Shipping weight 98 kg
This is a compact air Dead-Weight tester for producing low Gauge and differential pressure to calibrate d.p. cells, depth measuring devices, low pressure gauges and transducers.
Being a fundamental Standard it is more dependable than low pressure low accuracy test gauges whose sensitive pressure elements and mechanisms can be easily damaged.
The BGP1P Portable Dead Weight Tester is a fully self-contained primary pressure standard in laboratory or workshop where its ease of use and its accuracy make it preferable to any other low pressure measuring instrument. The tester can be used in a workshop connected to a local supply of clean air or nitrogen.
Its ergonomic carry case contains the piston cylinder unit, mass set, hand pump, needle release valve, pressure indicating gauge and connection hose – everything needed to carry out on-site, high accuracy pressure calibrations. These features are especially useful when testing electronic DP Cells without removing them from their installed position where a supply of instrument-quality air might not be available.
The unit is used extensively in the chemical, gas, petroleum and power generation industries.
BGP1P can be used on vacuum with a Model 24 adaptor for standard negative gauge pressure calibrations.
Accuracy
Standard accuracy is 0.02% from 100 to 1000mbar, 0.04% from 15 to 100 mbar and on vacuum.
Class A Accuracy up to 60ppm (0.006% of reading).
Certification
Standard Accuracy Tester is supplied with TRACEABLE Area & Mass Certificate.
Class A Accuracy Tester is supplied with UKAS Area & Mass Certificate.
Software
Accuracy software is available with Class ‘A’ accuracy only for correction of Piston unit temperature, Pressure Head, Ambient Pressure, Ambient Temperature & local gravity.
Standard Accessories
1.5 meter flexible pipe, one end to fit tester, other end ¼” BSP / NPT Male connection. Soft copy of the Operation Manual on pen drive with Certificate of Accuracy.
Packing
1 carton, 50 x 25 x 25 cm, Nett 7 kg, Gross 10 kg.
This is a compact air Dead-Weight tester for producing low differential pressure to calibrate d.p. cells, depth measuring devices, low pressure gauges and transducers below 15 mbar or 5 in water.
The tester has twin piston units which are balanced at approximately 65 mbar. By adding weights to one piston only, a differential pressure as small as 1 mbar or 0.5″ water can be generated.
The BGP2DP Portable Dead Weight Tester is a fully self-contained primary pressure standard. Its ergonomic carry case contains the piston cylinder unit, mass set, pump, indicating gauge and connection hose – everything needed to carry out on-site, high accuracy pressure calibrations
BGP2DP can be used as standard low pressure gauge calibration and on vacuum with a Model 24 adaptor for standard negative gauge pressure calibrations.
Accuracy
Standard Accuracy up to 0.015% of reading, 0.04% on vacuum
Class A Accuracy up to 55ppm (0.0055% of reading)
Certification
Standard Accuracy Tester is supplied with TRACEABLE Area & Mass Certificate
Class A Accuracy Tester is supplied with UKAS Area & Mass Certificate
Software
Accuracy software is available with Class ‘A’ accuracy only for correction of Piston unit temperature, Pressure Head, Ambient Pressure, Ambient Temperature & local gravity.
Standard Accessories
1.5 meter flexible pipe, one end to fit tester, other end ¼” BSP / NPT Male connection.Soft copy of the Operation Manual on pen drive with Certificate of Accuracy.
Packing
1 carton, 59 x 49 x 38cm. 0.110m3, Nett 20kg, Gross 22kg.
Application
Calibration of differential pressure (DP) transducers / transmitters at high static pressures on gas. This calibration is specially important for fiscal metering of large flows of gas using orifice plates.
The tester is also used for calibrating DP cells in metering stations without removing the cells from the pipework. Great care is required in such installations to attain full accuracy.
One side of the tester may be used as a standard dead-weight tester for calibrating pressure transducers / transmitters, pressure gauges and switches.
Principle of operation
Two oil lubricated piston units are connected to each side of the DP cell, these are balanced against each other at the static gas pressure specified. They are then isolated from each other and small weights corresponding to pressures (in water or mbar) are added to the piston unit on the high pressure side of the DP cell thus developing a differential pressure across the cell.
This differential pressure depends only on the effective area of the piston unit and the mass of the small weights added
Description
The two piston units are mounted in an aluminium block and loaded with non-magnetic austenitic stainless steel weights. Reducing valve, needle valve and pressure gauges are fitted on a panel above and volume adjusters for fine control are mounted under the block. A lighted screen, lit by a lamp, helps balancing the piston units.
A supply of high pressure nitrogen is required slightly above the static pressure.
The standard Pressure Connections (Differential & supply) are 1/4″ BSP female
Dimensions 550(W) x 480(D) x 920(H) mm.
Ranges Available
The tester is available in the following two DP and corresponding static pressure ranges:
1) DP Range: 2.5 to 2000 mbar, increment of 2.5 mbar ; Static Pressure 100 bar , increment of 5 bar
2) DP Range: 5 to 4000 mbar, increment of 5 mbar ; Static Pressure 200 bar , increment of 10 bar
Accuracy
Standard Accuracy up to 0.03% of reading on static pressure and 0.035% of reading on differential pressure.
Class A Accuracy up to 80 ppm (0.008% of reading) is available with UKAS Area and Mass Certification
Certification
Standard Accuracy Tester is supplied with TRACEABLE Area & Mass Certificate
Class A Accuracy Tester is supplied with UKAS Area on one piston unit and Mass Certificate on one weight mass set and differential weight set.
Software
Accuracy software is available with Class ‘A’ accuracy only for correction of Piston unit temperature, Pressure Head, Ambient Pressure, Ambient Temperature & local gravity.
Standard Accessories
Tool Roll containing 2 Spanners, Spirit level, Bag of seals, Pointer Punch, Pointer Remover, 1 inlet manifold adaptor, and ½“, 3/8”, ¼” BSP or NPT adaptor set (as ordered), Soft Copy of the Operation Manual on Pen drive with Certificate of Accuracy (UKAS Certificate if Ordered).
Packing
On two pallets – 100(L) x 80(B) x 140(H) cm; 80kg and 100(L) x 80(B) x 50(H) cm; 170kg
The Hydraulic Dead-weight pipeline Testers are available in four pressure ranges. Pressure Range extends from 7 bar to 600 bar
Certification
The Standard Accuracy testers are supplied with TRACEABLE Area and Mass Certificates
The Class A Accuracy Testers are supplied with UKAS Area and Mass Certificates.
Application
The Dead-Weight Tester is used for high accuracy pressure measurement and enables precision associated with laboratory instruments to be attained under adverse conditions.
On well heads it measures well head gas pressure and hydraulic test pressure of riser pipe.
At Gas Terminals it monitors gas pressures associated with flow metering.
On pipelines it measures pressures on leak testing and on yield testing as well as fractional pressure losses.
In Thermal Power Plants it accurately measures steam pressures for efficiency testing.
Principle of Operation (see illustration)
To measure a pressure, weights are added to the piston unit corresponding to a pressure just below that to be measured. Then total downward force of the weights plus weight carrier is then in excess of the pressure to be measured and is balance by the pressure produced by the hand 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 graduated so that the reading of the gauge only is added to the pressure equivalent of the weights used.
Traditionally these measurements have been taken by adding or subtracting of small weights on the dead weight piston unit; this method is very awkward and not as accurate.
Use of Tester
To measure the pressure of water the water/oil interface is within the pressure chamber.
To measure the pressure of air or natural gas, pipes are fitted into the pressure chamber to form a gas/oil interface.
Weights
The standard instrument is supplied with weights in non-magnetic austenitic stainless steel. The standard sets of weights are inter-changeable between similar instruments.
Individual weights are marked with Budenberg logo. Look for
logo on each mass in the main weight set as shown.
Standard Accessories
Blanking plug for cabinet, blanking plug for piston unit, 500ml VG22 Oil, and Carry case for Tester & weights, Soft copy of the Operation Manual on pen drive with Traceable Area and Mass Certificate. UKAS Area Mass Certificate (if ordered).
Packing
Case containing Cabinet, Model BG80 and BG80L
48 x 42 x 38 cm, Gross 26 kg (57 lb)
Case containg weights for standard range BG80 and BG80L
38 x 20 x 29 cm, Gross weight 32 kg (70 lb)
Case containing weights for extended range has the same dimensions.
Accuracy and Certification
Standard Accuracy is 0.05% of pressure
The Standard Accuracy testers are supplied with TRACEABLE Area and Mass Certificates
The Class A Accuracy Testers are supplied with UKAS Area and Mass Certificates.
Application
The liquid column dead weight tester is a portable device used to measure air pressures for the 24 hour leak testing of pipelines at around 7 bar (100 lb/in²). It can also be used for lower pressure testing down to 1.5 bar (20 lb/in²) for the lower pressure gas mains. In the tests the tester is used to measure small changes of pressure so that resolution and stability are more important than absolute accuracy.
The liquid column dead weight tester combines the accuracy of the Dead weight tester with the ease of reading of a liquid column to give very small increments of pressure.
Principle of Operation (see illustration)
The air pressure acts on the surface of the liquid in the column. The base of the column is connected to a dead weight piston unit. When the system is in balance the column shows the difference between the pressure of the air and the pressure of the piston unit. The column is scaled in pressure units.
Use of Tester
Weights are added to the piston unit until it is approximately in balance with the liquid half way up the column. The system is then balanced by displacing oil with the compensator and the reading of the column scale taken.
Weights
The standard instrument is supplied with weights in non-magnetic austenitic stainless steel. The standard sets of weights are inter-changeable between similar instruments.
Individual weights are marked with Budenberg logo. Look for
Logo as on each mass in the main weight set as shown.
Packing
35 x 43 x 66 cm, Gross 32.5 kg (71.5 lb)
Accuracy and Certification
Standard Accuracy is 0.05% of pressure
The Standard Accuracy testers are supplied with TRACEABLE Area and Mass Certificates
The Class A Accuracy Testers are supplied with UKAS Area and Mass Certificates.
Principle of Operation
The load is applied by a piston in a revolving cylinder to which a known hydraulic pressure is admitted. The cylinder and piston are accurately machined to give a known effective area; no packing or oil seal is fitted ensuring that there is no longitudinal friction between the piston and cylinder so that the force exerted is directly proportional to the pressure applied.
The press can be used in conjunction with a dead-weight pressure tester as illustrated above. In this form it may be regarded as a force multiplier, by which the weight of the weights applied to the piston (area a) is multiplied by the ratio A/a to give the force applied to the cell being calibrated.
