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.
1. Primary standard for defining the pressure scale in a range of up to 60MPa.
2. Pressure reference for factory and calibration lab for the testing, adjustment and calibration of pressure measuring instruments.
Model (optional): CV-6T CV-60T CV-250T CV-600T
Measuring range (MPa): (0.04-0.6) (0.1-6) (0.5-25) (1-60)(P.S.10~600bar) or user defined
Accuracy: 0.02%; 0.05% of Readings
Piston system (the rod and cylinder): tungsten carbide
Weight (Masses): Non-magnetic stainless steel (0.02);
Carbon steel (0.05)
Base: stainless steel
＜25 MPa : Mixed oil (transformer oil and kerosene oil)
≥25 MPa : sebacate oil
Gravity: user’s local gravity
Operating manual for deadweight tester-CV series
Able to test two gauges synchronously; Applied the fast pressure plug; no oil leakage;
The piston rod is anti-breakage structure.
PCU is made of Tungsten carbide make the accuracy improved a lot.