What are provers?
A Prover is a device with a “known traceable volume” designed to calibrate or prove a liquid flow meter’s accuracy and repeatability under actual operating conditions. Provers can be stationary or portable devices used to calibrate and verify the accuracy and repeatability of both volumetric and mass flow meters.
What are Provers used for?
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 piston prover?
A piston prover determines the gas flow rate by measuring the time interval that a movable piston inside a cylinder needs to pass a known volume of gas at a defined pressure and temperature.
What is meter factor used for?
Meter factor means a ratio obtained by dividing the measured volume of liquid that passed through a prover or master meter during the proving by the measured volume of liquid that passed through the line meter during the proving, corrected to base pressure and temperature.
What is a metering skid?
A metering skid is an automated system for measuring crude or natural gas comprising several measurement instruments assembled on a steel frame. They are used to determine financial estimates during custody transfer metering.
How does a bell prover work?
The BP Bell Prover operates as follows. As gas is displaced through the meter under test, the bell contains it. This causes the bell to rise and as the bell rises, the flow rate is calculated using information supplied by a rotary encoder and pressure and temperature sensing devices.
What is a meter factor?
What is a flow skid?
A Flow Metering Skid is a framed or moduled device on which various other assemblies are fitted for the measurement (flow rates) of gas or liquid products. The major purpose of using a metering skid is for custody transfer. They are designed and manufactured to fulfill the lowest uncertainty.
What is Fiscalization of crude oil?
Fiscalization is simply the determining the exact quantity and quality of product in the tank. It is carried out using the Measuring steel tape or Dip meter, Thermometer and Thief can used for collecting samples.
What is the purpose of a Coriolis meter?
Coriolis meters are primarily used to measure the mass flow rate of liquids, although they have also been successfully used in some gas-flow measurement applications.
What is a K factor meter flow?
For aircraft fuel flow meters, K-factor refers to the number of pulses expected for every one volumetric unit of fluid passing through a given flow meter, and is usually encountered when dealing with pulse signals.
How are flow meters calibrated?
Flow meters are calibrated by comparing and adjusting their metering to correspond with a predefined standard. Flow meter manufacturers typically calibrate their products in-house after production or send them to an independent calibration facility for adjustment.
What is the K-factor of a flow meter?
The K-factor is the frequency divided by the flow rate => [1/s] / [g/s] = 1/g. Knowing the K-factor for each calibration point, the factory determines the best fitting K-factor for that particular flowmeter. Calibration points are determined by averaging all K-factors.