deadweighttesterillä
Deadweight tester is a device used for calibrating pressure measuring instruments. It operates on the principle of balancing an unknown pressure against a precisely known force. A deadweight tester typically consists of a cylinder containing a piston of a very precise area. Known masses are placed on top of the piston, and the resulting force, combined with the piston's area, generates a known pressure. This pressure is then applied to the instrument being calibrated, and any deviation from the expected reading indicates an error in the instrument.
The accuracy of a deadweight tester relies on the precision of the piston's area, the accuracy of