1USDeadweight - PDS-A 087 8/98

D E A D W E I G H T

T E S T E R S

n The Most Comprehensive Range

n Vacuum

n Differential Pressure

n Gauge Pressure

n Absolute Pressure

n Separators and Comparison Test Pumps

2USDeadweight - PDS-A 087 8/98

eadweight Testers are the basic primary standard used world-wide for the accurate measurement ofpressure.

o other piece of equipment can match the stability, repeatability and accuracy of the deadweight tester.It is ideal for calibrating pressure gauges, transducers,transfer standards, recorders, digital calibrators, etc.and can also be used to directly measure the pressure insystems and processes where precise readings are important.

tilizing the well proven piston gauge system, consisting of a vertically mounted precision lappedpiston and cylinder assembly, accurately calibratedmasses are loaded onto the piston, which rises freelywithin its cylinder. These weights balance the upwardforce created by the application of pressure within thesystem.

ressurements offers one of the most comprehensive series of Deadweight Testers available, covering awide variety of applications and ranges of pressure andvacuum. The piston assemblies are manufactured tothe very highest standards with certified accuraciestraceable to International Standards Laboratories suchas National Institute of Standards and Technology, (NIST).

ravity varies significantly with geographical location and this variation has a direct effect on the force of theweights and the accuracy of the Deadweight Tester.Each instrument can be calibrated to local gravity at noextra cost. If unspecified, instruments will be suppliedcalibrated to Standard Gravity 980.665 cm/s2.

nstruments are supplied with an integral carrying case, which makes them neat, compact and easily portable.Components are stored in the detachable lid, whichalso provides excellent protection from dirt anddamage when the tester is in transit or storage.Unique test station connections allow quick hand-tightsealing, no need for Teflon tape and wrenches. A spiritlevel and adjustable feet are provided to enable theoperator to level the instrument. A floatation indicatoris mounted on the top plate removing guesswork whenfloating the piston. Weights are stored in a separatebox (except low pressure pneumatic models).

Standard with every Deadweight Tester

3 year guarantee against normal operating failure.1/8", 1/4", 3/8 ", 1/2" NPT female adaptors.

Calibrated weight set in carrying case.

Traceable certificate of overall accuracy.

Individual piston certificate.

List of the weight masses.

Operating Fluid (where applicable).

Spare seals.

PRESSUREMENTS DEADWEIGHT TESTERS

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Due to Pressurements continuous improvement, specifications are subject to change without notice.

FORCE

AREA

PRESSURE

PRESSURE = __________FORCEAREA

D

N

U

P

G

I

3USDeadweight - PDS-A 087 8/98

Program calculations include:

• Gravity

• Temperature

• Air density

• Actual weight mass

• Head of fluid or gas

• Density of fluid

• Combined surface tension and fluid loading/buoyancy

• Piston effective area

• Piston distortion coefficient

Software is also available for:

• Piston effective area calibration

• Area and mass calculations

• Differential Deadweight Testers

Technical Specification:

• Run on an IBM compatible PC

• Supplied on 3.5” 1.44 mb diskettes

• 3 mb hard disk free space required

• Minimum 1 mb ram, recommend 2 mb or more

• VGA monitor or better (preferably color)

• Require DOS version 3.2 or later

• Can run under WindowsTM and Windows ‘95TM

Pressurements primary standards laboratory

ser friendly, menu driven, DOS based calibration software designed specifically for primary pressurestandards, Deadweight Testers. This software has beendeveloped as a flexible working tool to make pressurecalibrations quicker, easier and more accurate. The softwarecalculates which weights are required to generate a specificpressure. The program can also calculate the actual pressurefor a piston and selected weight masses. The software willwork in an unlimited number of pressure units, regardless ofthe pressure unit the Deadweight Tester has beenmanufactured to. Details of multiple Deadweight Testerscan be stored. The software also generates calibrationcertificates which can be both stored or printed.

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S700 SERIES CALIBRATION SOFTWARE

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4USDeadweight - PDS-A 087 8/98

• Accuracy better than 0.015% of reading. 0.010% reading available.

• Dual piston models allow calibration over a wide range.

Piston automatically selected without valving or piston exchange.

• Overhanging weight carrier protects carbide piston, improves rotational spin, sensitivity and stability.

• Water models eliminate oil contamination.

• Pressure is generated by a ram screw.

Oil Operated Models

Dual Piston Series

Single piston series

Water Operated Models

Dual Piston Series

Other units available including Kgf/cm2 and bar

*Note: For special applications water units are available to 15000psi

Single piston series

MODEL M3800

3HYDRAULIC DEADWEIGHT TESTERS

MODEL RANGE

M 1901 10 to 1000 psiM 1902 10 to 2000 psi

M 1903 10 to 3000 psiM 1900 10 to 4000 psi

M 2000 10 to 5000 psiM 2100 10 to 8000 psi

M 2200 10 to 10000 psiM 2800 10 to 16000 psi

M 1800 10 to 500 psi

M 4001 15 to 1000 psi

M 4002 15 to 2000 psi

M 2000/H 200 to 5000 psi

M 2200/H 400 to 10000 psi

M 2800/H 400 to 16000 psi

M 2810/H 400 to 18000 psi

M 2820/H 400 to 20000 psi

M 3800 500 to 40000 psi

M 3810 500 to 50000 psi

M 3820 500 to 60000 psi

MODEL RANGE

W 1901 5 to 1000 psi

W 1902 5 to 2000 psiW 1903 5 to 3000 psi

W 1900 5 to 4000 psiW 2000 5 to 5000 psi

W 2100 5 to 8000 psiW 2200 5 to 10000 psi

W 1800 5 to 500 psiM 2000/H 200 to 5000 psi

M 2100/H 400 to 8000 psiM 2200/H 400 to 10000 psi

5USDeadweight - PDS-A 087 8/98

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Motor DriveIf a continuous pressure is required, a motor drive can beprovided to rotate the weights. Rotating the weights byhand is satisfactory for standard calibrations.

The motor is isolated from the Deadweight Tester by athermal barrier, preventing warming of the measuringpiston. The motor is suitable for 210/250, 105/125 volts at50/60 HZ, please specify requirement at time of order.

Not available on models M2800, M2820.

OPTIONAL EXTRAS

Built in Hand PumpLarge volume systems are easily primed.

Greatly speeds up priming and pressure generation.

Enables an effortless, small bore high pressure ram screwto be fitted.

There is no additional valve operation involved.

Standard on M2800 and M3800 series

Specifications

Accuracy: ± 0.015% of indicated pressure± 0.010% when specified

M3800 series: 0.02% of indicated pressure

Weight material: Series 3 non magnetic austenitic stainless steelWeight density: 7.9g/cm3

Minimum standard weight increment: Low pressure piston 1psi*High Pressure Piston x 10 or x 20 (for models above 5000 psi)

M3800, M3810, M3820: 20 psiOptional extra fractional weights (aluminium): Low pressure piston 0.1 psi

*High Pressure Piston x 10 or x 20 (for models above 5000 psi)

Piston carrier start pressure: Low pressure 3 psi*High Pressure 100 psi*High Pressure (above 5000 psi) 200 psi

M4001, M4002: 15 psiM3800, M3810, M3820: 500 psi

Piston Material: Oil Operated: Tungsten CarbideWater Operated Stellite (up to 500 psi)

Tungsten Carbide (above 500 psi)Cylinder material: Hardened martensitic steel, Tungsten Carbide (water above 500 psi)Total instrument weight: 26 lbs

M3800, M3810, M3820: 64 lbsTotal boxed weight set: 66 lbs up to 10000 psi

M2800: 132 lbsM3800: 264 lbsM3810: 320 lbsM3820: 396 lbs

Instrument size including lid: 18.5” x 12.5” x 8” L x D x HM3800 series: 25” x 16” x 13” L x D x H

* Dual Piston Instruments from 400 psi

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• Accuracy better than 0.015% or reading. 0.010% available.

• Instruments to 150 psi are supplied with built-in hand pumps and weights are stored within the Deadweight Tester case.

• Instruments up to 2000 psi and vacuum operate from an external air supply. Hand pumps can be supplied for both pressure and vacuum.

• T2700, T2900 are fitted with a ram screw to give fine control and compound pressure.

• Special models detailed on page 7.

PNEUMATIC DEADWEIGHT TESTERS

Lightweight Pressure Models

Pressure Models

`

These instruments are fitted with liquid lubricated piston assemblies wherecleanliness and environmental control cannot be assured

Note: All the above models are available in other pressure units.

MODEL RANGE

T 5100 5 to 100 inH2O

T 5250 5 to 250 inH2O

T 5400 5 to 400 inH2O

T 5800 12 to 800 inH2O

MODEL RANGE

T 1150 5 to 400 inH2O

T 1100 12 to 800 inH2O

T 2400 3 to 100 psi

T 2500 3 to 150 psi

MODEL RANGE

T 1400 3 to 400 psi

T 2300 3 to 500 psi

MODEL RANGE

T 2700 10 to 1000 psi

T 2900 10 to 2000 psi

MODEL RANGE

T 2700/L 10 to 1000 psi

T 2900/L 10 to 2000 psi

7USDeadweight - PDS-A 087 8/98

Vacuum Models

Combined Pressure & Vacuum ModelsTwo instruments in one, with a selector valve for pressure or vacuum.

V = Vacuum P = Pressure

MODEL RANGE

T 3550 1 to 30 inHg V 5 to 400 inH2O P

T 3580 1 to 30 inHg V12 to 800 inH2O P

T 3400 1 to 30 inHg V 3 to 400 psi P

T 3500 1 to 30 inHg V 3 to 500 psi P

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Optional Extras• Built in hand pumps to generate pressure (up to 150 psi) and/or vacuum (up to 80%), as illustrated on Page 5.

• Fitted as standard on models T1150, T1100, T2400, T2500

• Motor drive, models T2400, T2500, T1400, T2300, T2700, T2900 only.Start point increases: Models T2400, T2500, T1400, T2300 to 4 psi; Models T2700, T2900 to 40 psi.

Specifications

Accuracy: 0.015% of indicated pressure0.010% when specified

Weight material: Series 3 non magnetic austenitic stainless steelWeight density: 7.9g/cm3

Minimum standard weight increment: 1psi T5100, T5250, T5400, T1150, T3550(P): 0.25 psi, 1 inH2O T5800, T1100, T3580(P): 0.5 psi, 2 inH2O T2700, T2900: 1 psi T2600(V): 0.2 inHgOptional extra fractional weights (aluminium): 0.1 psi T5100, T5250, T5400, T1150, T3550(P): 0.1 psi, 0.5 inH2O T5800, T1100, T3580(P): 0.25 psi, 1 inH2O T2700, T2900: 0.5 psiPiston Material: Tungsten Carbide T5000, T1100, T1150, Vacuum: CeramicCylinder material: Hardened martensitic steel T2700, T2900: Tungsten carbideTotal instrument weight: 22 lbs T5000: 10 lbs to 18 lbsTotal weight set: Variable from 10 lbs to 66 lbsInstrument size including lid: 18.5” x 12.5” x 8” L x D x H T5000: 12” x 10” x 5” L x D x H

MODEL RANGE

T 2600 1 to 30 inHg

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These test pumps are used for checking pressure measuring instruments against master test gauges or transducers. All areportable or can be bench mounted. Supplied with NPT quick hand-tight sealing gauge adaptors.

Liquid

This is the most portable and versatile version of our comparison testpumps. The units are based on our standard Deadweight Tester system.The piston and weights are replaced by a second test station to whicheither a test gauge, transducer or transfer standard is connected forcomparison against the instrument under test. A built-in hand pump issupplied offering the following benefits:

Large volume systems are easily primed.A small bore high pressure ram screw is provided offering quick and effortless pressure generation without additional valve operation.

Model: T1300 for oil applications.Model: T1301 for water application.

LiquidTested with water and suitable for use with:

water, mineral/vegetable oil, alcohol.

Supplied with a reservoir and valve, pressure is quicklygenerated with the ram screw.

AirPressure is generatedwith the sensitive handpump and is vented witha fine control needlevalve.

VacuumVacuum is generated quickly& easily with the hand pumpand vented with a fine controlneedle valve.

COMPARISON TEST PUMPS

Model: T1300 & T1301 Range: 0 to 20,000 psi

Model: T1200 Range: 0 to 10000 psi

Model: T4100Range: 0 to 300 psi Model: T4200

Range: 0 to 80% Vacuum

MODEL T1300

MODEL T1200

MODEL T4200MODEL T4100

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8SEPARATORSLiquid To Air

For high pressure pneumatic calibration, this unit interfaces with hydraulic deadweight testers, giving a rateless liquidto air separation. A series of fluid traps ensures the instrument under test remains dry.Needle valves control the pressure, and thedeadweight tester ram screw controls the fluid level.Please specify if interface is for oil or water application.

Liquid toLiquidThis unit has a flexible"Viton" diaphragm,separating the deadweighttester fluid and a noncontaminating liquid. Anyliquid can be used that iscompatible with "Viton" andaluminium bronze. The unitalso protects the deadweighttester from contamination.

Dirt/MoistureTrapProtects pneumatic DeadweightTesters, when the cleanliness ofthe instrument under test cannotbe guaranteed. The unit ismounted directly onto the teststation. Particles and moisture aretrapped within the body, whichare visible on Model T4400.

Two Gaugeadaptor

To calibrate twoinstruments at thesame time. Thisadaptor is mounteddirectly onto the teststation.

Angleadaptor

To calibrate backconnection gauges,the angle adaptorfits directly onto thetest station, convertingit through 90°, allowingthe same adaptors to beused.

PointerRemover/Punch

To remove and refit thepointer of a pressuregauge. This two in onetool has a spring loadedplunger to quickly &consistently refit thepointer.

Model: API5000/1 Range: 0 to 4000 psiModel: API5000/2 Range: 0 to 6000 psiModel: API5000/3 Range: 0 to 10000 psi

Model: T3600 Range: 0 to 8000 psiModel: T3601 Range: 0 to 10000 psi

Model: T4400 Range: 0 to 500 psiModel: T4401 Range: 0 to 10000 psi

Model: T4500Range: 0 to 10000 psi

Model: T4600

MODEL API5000

MODEL T3600

MODEL T4400

MODEL T3700 MODEL T4600

GAS

ANCILLARY EQUIPMENT

Model: T3700 Range: 0 to 10000 psi

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Two deadweight tester systems are built into a single instrument with a cross- connecting valve. The twosystems are pressurized in parallel with the cross-connecting valve open until both pistons and weights arefloating at the specific line pressure. With the cross connecting valve closed the differential pressure isgenerated by each additional weight loaded to the measuring piston. The balance piston remains floating,ensuring that the line pressure is maintained.

Oil Operated Models Air Operated Models

Note: All the above models are in other pressure units.

* Further information available

DIFFERENTIAL DEADWEIGHT TESTERS

• Can be used as a standard Deadweight Tester.

• Accuracy better than 0.015% of reading, plus the balance error. (The differential pressure between balance piston and measuring piston at the specificline pressure.) 0.010% available.

• Standard differential range 0-800 inH2O. Other ranges available.

MODEL STATIC PRESSURE RANGE

M 1800/D 20 to 500 psi

M 4000/D 30 to 1800 psi

M 2000/HD 400 to 5000 psi

M 2200/HD 800 to 10000 psi

MODEL STATIC PRESSURE RANGE

T 1100/D 50 to 800 inH2O

T 2500/D 7.0 to 150 psi

T 1400/D 7.0 to 400 psi

*M 4000/DA 30 to 2000 psi

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MODEL M4000DA

SCHEMATIC DIAGRAM

BalancePiston

MeasuringPiston

Low Test Station High Test Station

Cross Connecting Valve

Increase Decrease Increase Decrease

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Combined Absolute & Gauge PressureStandard Model 6100

ll Accuracy from 0.005% of reading

Pressurements Model 6100 operates over an extremely wide pressure range.Three standard ranges (piston and weight set) are available to fit into theinstrument base:

Low (L) Range 0.5 to 30 psi Mid (M) Range 3 to 300 psi High (H) Range 300 to 1000 psi

Further information available

Low Pressure Standards Model V1600D

ll Accuracy better than 0.020% of reading

ll Quick and simple to operate

Model V1600D is a primary pressure standard for positive and negativedifferential pressures.

Range 0.025 to 64 inH2OFurther information available

High Accuracy Pressure Standards P7000

ll Accuracy better than 0.005% of reading

ll Integrated Hardware and Software Systems

ll Special Dual Based Deadweight Tester calibrating option

The P7000 has been designed for pressure measurements to the highest levelof accuracy. The wide range of options ensures maximum flexibility.

Ranges 5 to 20,000 psiFurther information available

Low Cost Hydraulic Deadweight Tester L Series

ll Accuracy 0.1% of reading, Pressure ranges 2 to 10000 psi

Further information available

C Series, Digital Pressure Calibrators

ll Accuracy 0.025% full scalell Pressure ranges up to 10000 psill Oil, Water or Gas operatedll Dual pressure and electrical measurement / readoutll Built-in pressure generation

Further information available