Today's metering systems are usually equipped with several duty meters and at least one master meter. The master meter is used for automatic periodic verification of the duty meters. To verify the master meter itself, a ball prover or small volume prover can be used, or the meter can be returned to a calibration facility, or a mobile prover can be applied to the master meter.
Mobile master metering is a cost effective solution that allows verification of a flowmeter over several hours, rather than the short period - sometimes only seconds - that is achieved with a small volume prover. The mobile master meter unit can be used on several separate metering locations. At pre-set intervals the mobile master meter can have its own calibration verified simply by driving the mobile prover to a local calibration facility, or to a stationary ball prover.
Over recent years KROHNE has supplied multiple mobile master metering solutions, varying from small diameter Coriolis based trailers up to 12" ultrasonic based systems on a full size truck. KROHNE metrology specialists, in combination with engineers from the local sales office, organise all necessary custody transfer approvals and operator training.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
Mobile provers can be used on multiple locations
Fully certified against local and international metrology requirements
Fully traceable to (inter)national standards
KROHNE complete project support covers from fundamental design through to commissioning and operator training
Verification of custody transfer flow metering systems
Verification of high-end process measurements
Coriolis mass flowmeter for advanced process applications
High accuracy (±0.05% flat), for cryogenic to high temperature media (-200…+400°C / -328…+752°F); maintains operation over a wide range of gas fractions and complex flow conditions (EGMTM)