How do you prove a meter?

How do you prove a meter?

Meter proving is a method of physically testing the accuracy of a meter through the proving process of measuring temperature, pressure, flow rate, and density against a known prover. A PD meter (Positive Displacement meter) requires fluid to mechanically displace components in the meter in order to measure flow.

What does it mean to prove a meter?

Meter proving is the physical testing of the performance of a liquid meter in a liquid service. The main purpose of the test is to assure accuracy. The basic principles of proving a liquid meter are the same whether it is a Coriolis meter, turbine meter, or a positive displacement meter.

What is the difference between K factor and meter factor?

The meter base K-factor is the coarse calibration factor used with the flow computer, which is typically supplied by the meter manufacturer. The proving K-factor (PKF) is used to calculate the correct meter factor based on the pulses it receives while a known amount of liquid passes through the SVP.

What is a compact prover?

The Compact Prover utilizes a piston that travels through a measurement section (with detectors) displacing a known volume of liquid. At the same time a meter, in series, measures the corresponding volume of liquid. This allows for reliable proving with smaller volumes.

What is a prover loop?

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.

How is flow meter factor calculated?

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.

What is API MPMS?

API currently maintains a comprehensive Manual of Petroleum Measurement Standards (MPMS). This manual is an ongoing project, as new chapters and revisions of old chapters will be released periodically.

What are provers?

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.

How do you calculate K-Factor?

K factor is a ratio between the distance from the neutral bend line to the inside bend radius and the material thickness. K factor uses the formula K factor = δ/T.

What is K-Factor of flow meter?

Meter K-Factor is defined as the number of pulses per unit mass or volume at a particular flow rate. Every meter in each turbine contains a K-Factor or a ratio of the pulses per unit of flow. Every time a turbine rotates within a flow rate, the turbine blade passes a face of magnet that creates an electronic pulse.

How does a small volume prover work?

How Does It Work? The Stationary Small Volume Prover is a precise instrument that receives a command from the flow computer to initiate the retraction of the displacement piston and start the meter proving process.

What is the meaning of prover?

Definition of ‘prover’ 1. a person who proves or demonstrates something. 2. an apparatus used for testing.

What do you need to know before proving a meter?

When proving a meter, the process-fluid conditions must be as stable as possible throughout the proving process. This includes: Before starting a meter proving, let the liquid flow through the meter and prover long enough so that the conditions stabilize. Check for leaks or fluid bypassing around the prover or meter.

When to start a liquid flow meter proving?

Before starting a meter proving, let the liquid flow through the meter and prover long enough so that the conditions stabilize. Check for leaks or fluid bypassing around the prover or meter. The only way to obtain a reliable meter factor is to have all the liquid that is measured by the meter also measured by the prover.

What are the different types of liquid meter provers?

LIQUID METER PROVERS. There are a number of devices that can be used for proving of meters, however, in continuous service and for proving on-line there are basically two types of provers that are commonly employed. 1. Pipe Provers  Uni-directional  Bi-directional 2.

Which is the only way to obtain reliable meter factor?

The only way to obtain a reliable meter factor is to have all the liquid that is measured by the meter also measured by the prover. When in the field, a meter’s performance may change because of: