Hydraulic Dead Weight Tester - Manufacturers & Suppliers
Mechanical deadweight testers or primary standards are the most accurate reference instruments for pressure. The functional principle is based on the physical principle of Pressure = force/area. A Deadweight tester is a calibration standard works on the principle of pressure weighing balance for calibrating pressure measuring devices like pressure gauges. Yatherm deadweight testers are reckoning for quality in terms of fast stabilization times, Digital display & Testing under Normal condition.
Dead Weight Tester Working Principle
A dead weight tester is trusted as a primary calibration standard because it doesn't rely on any secondary reference, it generates pressure directly from a known weight acting on a known area. That's the core of the dead weight tester working principle: simple physics that stays accurate for decades with proper care. As a dead weight tester manufacturer and dead weight tester supplier, Yatherm Scientific builds this deadweight testing equipment to hold that accuracy across a wide pressure range, from low-pressure gauges up to 250 MPa ultra-high pressure applications.
Ultra-High Pressure Dead Weight Tester – 2500T
Working Principle
Weighted Plates are placed on the top of a piston-cylinder system are the main source of a precisely defined force. Producing required pressure inside the pressure balance equilibrium is achieved: Weight pieces, including the free-running piston of the piston-cylinder system, are floating, which will lead to a very accurate pressure at the test report.
Application
- Standard explains the pressure with a scale ranging from 250 MPa.
- Manufacturing unit use in pressure references.
- Calibration lab related to pressure instruments.
Features
- Weights can be driven to 250MPa with the engine at once.
- Dirty medium oil can be drained out from the sewage outlets when it gets dirty.
- The piston rod is an anti-breakage structure and adopts a spacing ring structure to reduce friction, so it is strong and rotates steadily.
- The gauge adopts a military-grade sealed structure to completely avoid oil leakage.
- The base is stainless steel material and is assembled with a 3.5" TFT LCD display which can display piston working location, temperature & humidity, etc.
Hydraulic Dead Weight Tester — Piston Range Series
- Able to test two gauges synchronously: applied the fast pressure plug: no oil leakage.
- Abrasive resistance is improved because of the high tensile & high hardness wolfram carbide material.
- The piston rod is designed in an anti-breaking structure.
- The piston system configures the eddy current displacement sensor, adopts an integrated double row LCD digital cursor display, therefore piston position can be observed clearly at any time.
- With a pre-pressure pump, it can fill oil to large capacity gauge, several gauges or long-distance calibration pipeline system.
- The tester junction with stop valve and piston stop valve, so it can be used as an independent pressure source when the piston stop valve is closed.
Application
- Primary standard for defining the pressure scale in a range of up to 160 MPa.
- Pressure reference for factory and calibration lab for the testing, adjustment and calibration of pressure measuring instruments.
Frequently Asked Questions About the Dead Weight Tester
What is a dead weight tester used for?
A dead weight tester is used as a primary calibration standard to calibrate pressure measuring devices like pressure gauges, based on the physical principle of pressure equals force divided by area.
How does a dead weight tester work?
Weighted plates are placed on top of a piston-cylinder system to create a precisely defined force. The piston floats in equilibrium inside the cylinder, and this floating balance generates a very accurate pressure reading.
What is the difference between a deadweight tester and a dead weight pressure gauge?
A dead weight tester is the calibration standard itself, generating a known pressure from weights and area. A pressure gauge is the instrument being tested or calibrated against that known standard.
What pressure range does Yatherm's dead weight tester cover?
The YS-2500T model covers 5-250 MPa, while the piston range series covers models from 0.04-0.6 MPa (Piston-6T) up to 2-160 MPa (Piston-1600T).
What materials are used in the construction of a dead weight tester?
The base is stainless steel, the piston rod and cylinder are made of tungsten carbide, and weight materials include non-magnetic stainless steel or carbon steel depending on the accuracy class required.
What working medium does a dead weight tester use?
For pressures below 25 MPa, a mixed oil (transformer oil and kerosene oil) is used; for pressures above 25 MPa, Sebacate oil is used.
Can a dead weight tester calibrate two gauges at once?
Yes, the hydraulic dead weight tester range can test two gauges synchronously using a fast pressure plug design with no oil leakage.
What is the price of a dead weight tester in India?
Pricing depends on the model, piston range and accuracy class required. Contact Yatherm Scientific, a trusted dead weight tester manufacturer and supplier, for the current price list.
