Measurement Consultancy

A complimentary service to meter calibration and verification, which considers the impact of the installation and operation of the flow meter on overall measurement performance – it’s not sufficient to only calibrate your meter to ensure accuracy.

A prime example of the importance of measurement consultancy is the impact of meter installation on accuracy. Flow meters are typically calibrated under ideal installation conditions with long lengths of straight pipe work up and downstream of the meter. As a minimum, the manufacturer’s recommendations are maintained. If the meter is subsequently installed with few straight lengths it’s performance will change from that stated on the certificate. Typically, such instances generate a measurement bias, an error in the measured value which is not random. This will introduce an error in all measurements made using that device. If the meter output is used for billing purposes this could result in your customers being undercharged. Measurement consultancy covers a number of different, but related services including:

Metering system audits

Assessment of actual installation and operation against recognized international standards and best practice guidance. The audit process takes into account factors such as; measurement technology, operating parameters, installation, maintenance and calibration procedures and history etc.

Measurement uncertainty

Detailed evaluation of meter type, installation, process conditions, ancillary instrumentation, operation, calibration and maintenance history to determine the actual measurement uncertainty of the metering system. This highlights potential financial exposure and can identify problem measurement points.

Mass balance and loss control

The measurement of fluids to and from a system, plant or process to determine losses across the system and help in determining loss control solutions. The study may identify real losses from the system or apparent losses due to poor measurement or calculation errors. The study can be used to benchmark similar plants within an organization or industry to assess relative performance.

Meter selection studies

Independent advice on the most suitable measurement technology to meet your requirements. With no agency or manufacturing interests, ACC is able to offer truly independent advice.

Computational Fluid Dynamic (CFD) analysis

The use of computer programs to model the flow through a system and assess the potential impact on meter performance. Often used when an audit identifies a
poorly installed flow meter. Where re-location is impossible or impracticable, CFD modelling can generate correction factors to account for the installation effects.

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