Maxiflex Meter Prover Module

To aid compliance verification in oil and gas, remote monitoring specialist
Omniflex has partnered with calibration experts Kalibra OGC Services to provide
the Maxiflex flow computer systems, including pulse integrity modules used for
calibrating master metering systems. These systems were integrated into two test
rigs designed and manufactured in Durban to be used at various facilities in
Angola and Nigeria.

Kalibra OGC Services, accredited to ISO17025:2017 for the calibration of prover loops,
designed the system to automate an already approved calibration rig used to calibrate
prover loops using the Master Meter Method. Omniflex now offers the Maxiflex 4 Pulse
Integrity (4PI) Module and Maxiflex Meter Prover Module which significantly enhances
calibration accuracy, repeatability and reliability, ensuring the calibration rig’s equipment
sits within acceptable limits and maintains adherence to international quality standards.

The Maxiflex Meter method’s automated system removes potential for human error by
ensuring consistent and precise measurements while operating at a high flow rate,
reducing the time required to calibrate prover loops, increasing efficiency.

The Meter Prover Module performs pulse interpolation for verifying the master meter
according to the Manual of Petroleum Measurement Standards. It accepts four detector
switch inputs from a prover loop and receives pulses from a flow meter, performing
pulse interpolation calculations in real time.

The Maxiflex 4PI monitors can accept inputs from up to four oil and gas turbine flow
meters to detect and correct errors, ensuring accurate totalisation and output. The
prover loop is calibrated using the master meter method, which is integral to the
calibration process, ensuring measurements are precise and reliable.

The calibration process adheres to requirements set out in ISO/IEC 17025:2017, OIML
D36 and OIML R117, ensuring the process is rigorous, reliable and meets international
standards for accuracy and reliability.

“We were impressed with the accuracy of the Maxiflex system during our in-house
testing and verification of our portable test rigs,” said Warrick Riley, Kalibra Technical
Director. “The Maxiflex system is suitable to ensure that the measurements recorded
using the designed procedures are in accordance with the relevant guidelines and standards. This system also assists in meeting the required uncertainty of measurement
(UOM), ensuring precision and reliability.”

“Our equipment can be used with different types of meter prover,” added Ian Loudon,
International Marketing and Sales Manager at Omniflex. “Whether that’s volumetric, by
using a tank of liquid, or by measuring weight. It depends on the technique the customer
wants to use.”

By following these guidelines, Kalibra OGC Services guarantees that all measurements
are accurate and compliant with regulatory requirements. Omniflex’s equipment
complies with ISO 6551, ensuring accurate measurement of petroleum products during
financial and regulatory processes.