A deadweight tester is a calibration standard that uses the principle of a pressure balance to calibrate pressure measuring instruments. Deadweight testers use calibrated weights to apply known pressures to a device under test for a simple and cost-effective solution that covers a wide range of pressure calibrations.
What is a dead weight pressure gauge?
Dead Weight Tester (DWT) is a pressure measurement instrument that calibrates pressure based on the weight of force divided by the area the force is applied. DWT provides high accuracy in pressure gauge calibration and prevents the occurrence of an error in pressure reading.Apr 20, 2021
What is digital pressure calibrator?
Digital pressure calibrators provide a high degree of accuracy without the hassle of handling weights, and in some cases eliminates the use of hand pumps for pressure generation. Some also measure pressure switches, the 4-20 mA output of pressure transmitters, and P/I instruments.
Why is it called dead weight tester?
Dead weight testers are named so because they utilize dead weights in determination of pressures operating in a closed and compressed fluid system. ... Each weight is stamped with the equivalent amount of force that will be exerted on a predetermined area of piston cylinder arrangement by using that weight.
What are the applications of dead weight pressure gauge?
Dead weight testers are the basic primary standard for accurate measurement of pressure. Dead weight testers are used to measure the pressure exerted by gas or liquid and can also generate a test pressure for the calibration of numerous pressure instruments.
What is the dead weight tester's pressure measuring rating?
10,000 bar
Which type of pressure measuring devices use dead weight?
deadweight tester
Why the dead weight tester is such a good pressure reference?
Applications. A dead weight tester is often called a primary reference standard because it is considered to produce the most accurate results because the mass of the weights and the area of the piston cylinder are known to a very high accuracy.
What is the dead weight principle?
DWT (Dead Weight Tester) is based on the principle of Pascal's law. The law states that in a closed system of incompressible fluid, the pressure applied will exert equal amount of force in all the directions. ... Necessary corrections are made in the zero/ span adjustments in gauges/ Pressure transmitters.
How do you calibrate a pressure gauge with a dead weight tester?
Deadweight tester calibration The basic steps to perform calibration with a deadweight tester include attaching a pressure measurement device to the tester, applying a series of weights to generate known pressures, and comparing the known pressures to pressure readings from the device under test.
How do you use a deadweight tester?
The basic steps to perform calibration with a deadweight tester include attaching a pressure measurement device to the tester, applying a series of weights to generate known pressures, and comparing the known pressures to pressure readings from the device under test.