Dead Weight Testers are the most accurate and stable pressure standards and are widely used in industry, academia and research institutes to calibrate pressure measurement devices like pressure transmitters, pressure gauges & hydrotesting of pipeline.
Hydrotesting of pipeline. Measurement of pressure, calibration of pressure transmitter, pressure gauges and pressure switches.
Fluid Pressure generated by a screw pump acts on the bottom of a vertically free floating piston. The force produced pushes the loaded free piston vertically upwards. The piston floats freely in its cylinder and the pressure in the circuit will be determined by the weights loaded on the piston divided by the effective area of the piston with corrections for value of acceleration due to gravity, air buoyancy, surface tension and datum level difference.