dead weight tester

Dead Weight TestersIndustrial Pressure Calibrators

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“Process Instruments and Calibrators”

YANTRIKAINSTRUMENTS PVT.LTD.

Vast Range for all Applications Traceability to International Standards

Vacuum, Pneumatic & Hydraulic Ranges

Industrial, Laboratory & Academic Models Economical Pricing & Quick Deliveries

Highly Accurate, Proven for 40 years

Customers in Five Continents

Dead Weight Testers

YANTRIKAINSTRUMENTS PVT. LTD.

“Process Instruments & Calibrators”

( Single Piston Machine )

( Dual Piston Machine)

( Motorized Machine with Priming Pump )

Yantrika ® Dead Weight TestersDead Weight Testers are used as primary standards inindustry, laboratories and academia world wide for precisemeasurement of pressure. All pressure measuring instruments whether pressure gauges, transmitters, transfer standards , switches, recorders, pressure data loggers, digital calibrators etc are ultimately calibrated using dead weight testers. Till date no other equipment has been able to beat dead weight testers long time stability, accuracy & repeatability.

In rare cases like hydrotesting, dead weight testers are used to directly measure system pressures because themeasurement precision required is very high.

Dead Weight Tester use the piston gauge pressure balance system consisting of fi nely lapped piston cylinder assembly of known area mounted along the vertical axis . Pressure forces the piston upwards and that force is balanced using accurately calibrated masses. Convenient value of piston area and masses allow user friendly measurement of pressure.

Operating Principle

Fluid Pressure generated by a screw pump acts on the bottom of a vertically free fl oating piston. The force produced pushes the loaded free piston vertically upwards.The piston fl oats freely in its cylinder and the pressure in the circuit will be determined by the weights loaded on the piston divided by the effective area of the piston with corrections for value of acceleration due to gravity, air buoyancy, surface tension and datum level difference.

Yantrika manufactures a vast range of dead weight testersfrom vacuum to the high hydraulic pressures. Our calibrations are traceable to the world best laboratories like

National Physical Laboratory, India (NPL, INDIA)National Physical Laboratory, UK (NPL, UK)National Institute of Standards and Technology USA (NIST, USA)

Motor drive is suitable for application that require continuous pressure. Please specify line voltage & frequency.

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Dead Weight Testers



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Hydraulic Dead Weight Testers

(Hydraulic Dead Weight Tester)

Accuracy: better then 0.015% of reading. 0.008% available on request. Over All Range : 0.2-2000 bar, 10-30000 psi, 0.2-2000 kg/cm² Various Pressure Unit available: bar, kg/cm², psi, MPa, kPa. In dual piston models PCU changeover from LP to HP automatically. [Except model above 1000 bar] Pressure generated by a ram screw. Pressure calibration over a wide range allowed in Dual Piston Models Operating Fluid : Hydraulic Oil & Distilled Water (Depends on model Chosen)

Oil & Gas PlantsThermal / Nuclear / Hydro Power StationsHydraulics and PneumaticsHigh pressure test benchesResearch & DevelopmentsSteel PlantsGeneral Mechanical Engineering IndustriesRubber / Plastic IndustriesChemical Process IndustriesMachine/Automobile Industries

Applications

Standard Accessories withDead Weight Tester

3 Years guarantee against normal operating failure(⅛”, ¼”, ⅜”, ½”) BSP or NPT female adaptorsCalibrated Weights in Carry BoxSpare Seals & Dust Cover½ Liter Operating FluidInstruction ManualTool Bag & Seal KitTraceable Calibration Certifi cate

Optional Accessories ForDead Weight Tester

Extra (⅛”, ¼”, ⅜”, ½”) BSP or NPT AdaptorsPointer Puller, Pointer PunchCarrying box for testerAngle Connection for back mounting gaugesExtra Operating Fluid

Materials of Construction Piston mterial Oil Operated : Tungsten Carbide/HCHC Water Operated:Tungsten Carbide Cylinder mterial Oil Operated : Tungsten Carbide/HCHC Water Operated:Tungsten Carbide Mass Set materials Non magnetic 300 series Austenitic Stainless Steel. Wetted Parts Non magnetic 300 series Austenitic Stainless Steel / Aluminum

Specifi cationGeneral

Accuracy±0.015% of reading±0.008% on requestBase Unit Size & Weight361 x 382 x 245 mm12 kg ApproximatelyWeight Box Size & Weight12 x 12 x 12 inchDepends on Model[28 to 40 kg]

Standard Parameters Gravity : 9.80665m/s² Temperature : 23° C Air Density : 1.2 kg/m³ *Trimming to Local Gravity on Request

Ordering Code ( for Hydraulic Dead Weight Testers )

Dead Weight Testers



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How to Order

STEP 1 : Choose base model from the table on the nextpage, the choice of models depends on the pressurerange required. Eg. Choose REW 304 for 1 to 700 barrange.

STEP 2 : Choose Accuracy, Eg. Choose H for 0.015% orN for 0.025% accuracy.

STEP 3 : Choose Weight rotation method Eg. Chose Afor manual or B for motorized rotation.

STEP 4 : Choose pressure unit. Eg. /1 for bar unit or /3for psi unit.

STEP 5 : Choose Operating Fluid. Eg. Choose O forHydraulic Oil or W for Distilled Water.

Example: Ask for REW 304HBO/1 to order a dual piston, 1-700 bar range with 0.015%

Accuracy motorized , oil based machine

Example: Ask for REW 202HAW/3 to order a single piston,100-10000psi range, with 0.015% Accuracy, water based, manual

machine

REW304 H A O /1

Base Model From Table

Accuracy 0.025% NAccuracy 0.015% H

bar Unit /1kg/cm Unit /2psi Unit /3Mpa Unit /4Kpa Unit /5

Operating Fluid: Oil OOperating Fluid: Water W

Manual Weight Rotation AMotoroized Weight Rotation(Specity Voltage / Frequency B

Standard Manufacturing Program

Dual PistonOil Operated

ModelRange

Dual PistonWater Operated

Model

Single PistonOil Operated

ModelRange

Single PistonWater Operated

Model

REW 300HAO/1REW 300HAO/2REW 300HAO/3

0.2-100 bar0.2-100 kg/cm²

10-1500 psi

REW 300HAW/1REW 300HAW/2REW 300HAW/3


0.2-160 bar0.2-160 kg/cm²

10-2000 psi



1-250 bar1-250 kg/cm²10-3500 psi



1-300 bar1-300 kg/cm²10-4000 psi



1-350 bar1-350 kg/cm²10-5000 psi



1-400 bar1-400 kg/cm²10-6000 psi



1-600 bar1-600 kg/cm²10-8000 psi



1-700 bar1-700 kg/cm²10-10000 psi



1-1000 bar1-1000 kg/cm²10-15000 psi



1-1100 bar1-1100 kg/cm²10-16000 psi



01-1400 bar1-1400 kg/cm²10-20000 psi



1-2000 bar1-2000 kg/cm²10-30000 psi



0.2-20 bar0.2-20 kg/cm²

10-300 psi



1-35 bar1-35 kg/cm²10-500 psi



1-50 bar1-50 kg/cm²10-700 psi



2-100 bar2-100 kg/cm²20-1500 psi



2-120 bar2-120 kg/cm²20-1800 psi



2-250 bar2-250 kg/cm²20-3500 psi



10-350 bar10-350 kg/cm²100-5000 psi



10-400 bar10-400 kg/cm²100-6000 psi



10-700 bar10-700 kg/cm²100-10000 psi



20-1000 bar20-1000 kg/cm²400-16000 psi



20-1400 bar20-1400 kg/cm²400-20000 psi



20-2000 bar20-2000 kg/cm²400-30000 psi


Dead Weight Testers



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Dead Weight Testers for Hydrotesting

Accuracy: better then 0.015% of reading. 0.008% available on request. Over All Range : 0.2-700 bar, 10-10000 psi, 0.2-700 kg/cm² Various Pressure Unit available: bar, kg/cm², psi, MPa, kPa. Finer Least Count than normal machines


Applications




Extra (⅛”, ¼”, ⅜”, ½”) BSP or NPT AdaptorsPointer Puller, Pointer PunchCarrying box for testerAngle Connection for back mounting gaugesExtra Operating Fluid

Materials of Construction Piston mterial Oil Operated : Tungsten Carbide/HCHC Water Operated:Tungsten Carbide Cylinder mterial Oil Operated : Tungsten Carbide/HCHC Water Operated:Tungsten Carbide Mass Set materials Non magnetic 300 series Austenitic Stainless Steel. Wetted Parts Non magnetic 300 series Austenitic Stainless Steel / Aluminum



Standard Parameters

Gravity : 9.80665m/s² Temperature : 23° C Air Density : 1.2 kg/m³ *Trimming to Local Gravity on Request

(Hydrotesting Models)

Oil OperatedModel

Range Water OperatedModel


HEW 109HAO/1HEW 109HAO/2HEW 109HAO/3

2-250 bar2-250 kg/cm²20-3500 psi

HEW 109HAW/1HEW 109HAW/2HEW 109HAW/3


10-400 bar10-400 kg/cm²100-6000 psi



10-700 bar10-700 kg/cm²100-10000 psi


Dead Weight Testers



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Dead Weight Testers



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Pneumatic Dead Weight Testers


Applications




Extra (⅛”, ¼”, ⅜”, ½”) BSP or NPT AdaptorsPointer Puller, Pointer PunchCarrying box for testerAngle Connection for back mounting gauges

Materials of Construction Piston mterial : Tungsten Carbide/HCHC Cylinder mterial : Tungsten Carbide/HCHC Mass Set materials Non magnetic 300 series Austenitic Stainless Steel. Wetted Parts Non magnetic 300 series Austenitic Stainless Steel / Aluminum



Standard Parameters

Gravity : 9.80665m/s² Temperature : 23° C Air Density : 1.2 kg/m³ *Trimming to Local Gravity on Request

(Pneumatic Dead Weight Testers)

Accuracy: better then 0.015% of Over All Range : 0.2-35 bar, 5-500 psi, 0.2-35 kg/cm² Various Pressure Unit available: bar, kg/cm², psi, MPa, kPa. Pressure generated by a ram screw (inbuilt). Base Machine Weight : 20kg Aprx. Operating Fluid : Air


PNEUMATIC MODEL RANGE PNEUMATIC

MODEL RANGE

REW401HAA/1REW401HAA/6

15 to 1000 mbar5 to 400 inH20


30 to 2000 mbar12 to 800 inH20


0.2 to 7 bar3 to 100 psi


0.2 to10 bar3 to 150 psi






1 to 70 bar10 to 1000 psi


1 to 140 bar10 to 2000 psi

Dead Weight Testers



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Dead Weight Testers



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Yantrika Instruments Pvt. Ltd

®

“Process Instruments and Calibrators”

YANTRIKAINSTRUMENTS PVT.LTD.

Yantrika Instruments Pvt. Ltd. Distributed by :186, DSIDC Complex Okhla Indl. Area, Phase - INew Delhi - 110020, IndiaTel : +91 (11) 40548409 / 26819572 / 26819573Fax : +91 (11) [email protected], www.yantrika.com

dead weight tester

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