What is a Dead Weight tester in instrumentation?

Answer 1

Deadweights are usually used for pressure gauge calibration as they come with high accuarcy, So they can be used as primery standard (as mentioned before).there are many types of them depending on the application and they are operated with oil (hydrulic) or with air (penumatic).AnswerDeadweight testers are the basic primary standard for accurate measurement of pressure. Deadweight 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. DescriptionKnown weights are placed on a rotating plate on top of a calibrated piston, connected by tubing to the pressure sensor being tested. This puts a known force (weights) on a known surface area (piston). The rotation eliminates any static friction that would affect the reading.