KD Series Hydraulic Dead Weight Tester

Product introduction

Working Principle

Mechanical dead-weight testers or primary standards are the most accurate reference instruments for pressure. Their functional principle is based on the physical principle of pressure = force/area. Mass pieces placed on the top of a piston-cylinder system are the source of a precisely defined force. By producing a certain (counter) pressure inside the pressure balance equilibrium is achieved: the mass pieces, including the free-running piston of the piston-cylinder system, are floating, which will lead to a very accurate pressure at the test port.

Application

1. Primary standard for defining the pressure scale in a range of up to 1600bar.

2. Pressure reference for factory and calibration lab for the testing, adjustment and calibration

Specification

Model KD-6T KD-60 T KD-250T KD-600 T KD-1000 T KD-1600 T

Range(MPa) (0.04~0.6) (0.1~6) (0.5~25) (1~60) (2~100) (2~160)

Accuracy: 0.005%; 0.01%; 0.02%; 0.05% of Readings

Material

1,Piston system (the rod and cylinder): tungsten carbide

2,Weight (Masses): Non-magnetic stainless steel (0.005%, 0.01%, 0.02%);Carbon steel (0.05%)

3,Base: stainless steel

Working medium:

＜25 MPa : Mixed oil (transformer oil and kerosene oil)

≥25 MPa: sebacate oil

Gravity: user’s local gravity

Piston displacement: LCD display

Features

_ Able to test two gauges synchronously; Applied the fast pressure plug;

_The piston rod is anti-breakage structure.

_With priming pump, it can fill oil to large capacity gauge, several gauges or long distance

calibration pipeline.

_The tester junction with stop valve and piston stop valve, so it can be used as independent

pressure source, when piston stop valve is closed.

Scope of Delivery

Measuring base

Weights

Measuring system

“O” Ring

Hand Wheel

Operation manual &CD

Certificate of approval

Calibration record

Power adapter