© 2019 Department of Petroleum Resources. All rights reserved Department of Petroleum Resources (DPR) PROCEDURE GUIDE

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A computer performing flow calculations connected to one or more instruments and/or
devices for collecting and distribution of signals. The storage unit (memory), which is
providing long and short-term retention of data, is regarded as an integral part of the flow
computer.
• Devices and equipment error:
•

Quantifiable amount incorrectly measured, since the accepted procedures for operation or
calibration are not followed.
• Fiscal metering station:
•

Assembly of metering equipment dedicated to the determination of fiscal quantities,
including MER values.
• Technical Metering:
•

Metering for the purposes of determining the essential parameters (formation volume
factors, solution gas, etc) required for effective reservoir management.
• Gas:
•

Hydrocarbons in gaseous state at measurement conditions
• Sensing element:

A device, which acts directly on the condition it is measuring and produces a signal
proportional to a physical condition.
• Instrument part:

The part of the metering system which is located between the mechanical part and the
computer part i.e. from sensing element to digital input of the computer part inclusive.
• Calibration:
Establish relationship between the input and output signal for a device.
•
Calibration factor:
Relationship between measured value coming from a flow meter and the measured value
from a reference measurement system
•
Calibration mode:
Selectable condition within the flow computer where routine checks and calibrations
can be carried out, whilst the associated meter tubes are closed.
• Linearity
A relation between conditions where a change in one causes a proportional change for the
other
• Mechanical part:
Meter tube, turbine meter, meter prover and all mechanical devices that are included in gas
metering system
• Metering tube