Provers work by passing a known volume of air through a meter while monitoring the gas meters register, index, or internal displacement. The prover then displays a proof, a value expressed as a percent which compares the volume of air passed with the volume of air measured to determine the meters accuracy.

How do you calculate meter factor?

The meter factor is obtained by dividing the prover test volume by the indicated volume of the meter. Once the meter factor is determined it is used as a volume correction in the calculation for net standard volume of a receipt or delivery of liquids. month, every month the meters are left uncorrected.

How does a liquid meter prover work?

A typical flow meter prover device functions to detect changes in the amount of gas or liquid flowing through a pipeline at various times. Installed in each prover are sensors that detect changes in fluid flow and ensures flow meter readings remain as accurate as possible.