Fluke P3800 [9/32] Chapter 1

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Chapter 1

General Information

Introduction

This manual contains operation and routine and preventive maintenance instructions for

the Model P3830, P3840, and P3860 High Pressure Hydraulic Deadweight Tester (DWT)

manufactured by Fluke. This section of the manual provides general information about

the DWT.

The P3800 Series of Deadweight Testers (DWT) provides a convenient means of testing

high pressure instruments for calibration accuracy.

The design incorporates the “Piston Gauge” principle, in which an applied pressure

within the system, balances a known mass applied to a piston of known effective area. i.e.

pistonofareaEffective

pistontoappliedmassTotal

PRESSURE =

The unit comprises a base plate onto which is mounted a high pressure manifold, a

piston/cylinder unit (PCU), a test station (to mount the equipment under test), a fluid

reservoir, a ram screw pressure generating system, a pressure intensifier (which increases

the pressure generated by a factor of 7:1), and a safety relief valve (which protects both

the low and high pressure systems from accidental overpressure). The whole assembly is

contained within a strong GRP housing.

The unit is equipped with four adjustable feet to enable correct leveling. This ensures that

the PCU is in the vertical plane, which is essential for both accurate and reliable

performance.

The hydraulic fluid supplied with the unit has been specially formulated to remain fluid at

high pressures and to ensure no corrosion of internal parts. In addition the fluid will not

oxidize in contact with air or emulsify or mix with water.

How to Contact Fluke

To order accessories, receive operating assistance, or get the location of the nearest Fluke

distributor or Service Center, call:

• Technical Support USA: 1-800-99-FLUKE (1-800-993-5853)

• Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)

• Canada: 1-800-36-FLUKE (1-800-363-5853)

• Europe: +31-402-675-200

• China: +86-400-810-3435

• Japan: +81-3-3434-0181

• Singapore: +65-738-5655

• Anywhere in the world: +1-425-446-5500