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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
