How does a meter prover work?
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 does a 4 way diverter valve work?
The Four Way Diverter Valve was developed for strict requirements of bi-directional meter proving. Slips are retracted from the body prior to the rotation preventing friction and damage. Slips move perpendicular- ly against the body sealing area, the soft seals are than compressed in order to make perfect sealing.
What is prover in metering skid?
A prover is an automated system that provides on-site calibration to ensure flow meters in service for fiscal and custody transfer applications maintain sustainable measurement performance as well as remain in compliance with industry standards.
What is piston pipe provers?
Piston prover. This is a type of conventional pipe prover or a type of small volume prover in which a piston is used as the displacer.
What is a prover valve?
What is a Prover? A prover is an automated system that provides on-site calibration to ensure flow meters in service for fiscal and custody transfer applications maintain sustainable measurement performance as well as remain in compliance with industry standards.
What is a shower valve?
A shower valve is found behind the handle of a shower faucet. It controls the temperature of the water and turns the shower on and off. Through a temperature mixing valve, the hot and cold lines are mixed together to create the desired temperature.
What is the meaning of prover?
a person who proves or demonstrates something
a person who proves or demonstrates something. 2. an apparatus used for testing.
What is a 4 way valve on a metering skid?
This is done with a four way valve (4-way valve). A pipe prover can be integrated on the metering skid or delivered on a separate skid. A compact ‘small volume piston’ prover can be an alternative to pipe provers because of its portability and space- and weight-saving advantages.
How does a bidirectional prover work?
The bidirectional prover allows the ball to travel first in one direction and then in the other by reversing the flow through the displacement prover. This is done with a four way valve (4-way valve). A pipe prover can be integrated on the metering skid or delivered on a separate skid.
How does an indirect master meter prove duty meters?
In indirect master meter proving scenarios, the ‘master’ meter is periodically removed and calibrated at a traceable facility on a different flow stream and/or conditions and returned to service. In principle proving duty meters with a master meter has greater uncertainty than direct proving with a prover.
What is the difference between pipe provers and small volume provers?
A compact ‘small volume piston’ prover can be an alternative to pipe provers because of its portability and space- and weight-saving advantages. The principle is the same as a sphere prover however displacement of the volume of liquid with a small volume prover is achieved by a piston which provides more accurate readings.