Calibration regime fluid rig (small sizes)
The fluid rig has three primary standards:
- Drum
- Proverloop
- Weighing scale and several working standards.
1. Primary Standards
The principle of the two standards is different; The drum has a static start and stop.The Proverloop is a piston prover with a free running piston. The Proverloop has a "flying" start and stop. With a liquid turbine meter DN50 both standards are compared. Every five years (calamities or unexplained abnormalities earlier) is:
- Whether the drum compared with the 1 m3 travel standard of NMI.
- Or the prover measured to determine the volume
The weighing scale is calibrated every year.
2. Work Standards
In this regime is the following applied:
- working standards at least once a year compared with the primary standards.
- In the period of one year, the working standards are at least once again compared with the primary standards.
3. Regime for P and T measurements
For the relevant pressure and temperature sensors, a calibration takes place with an annual frequency.
4. Meters of third parties
The calibration of or research on flow meters of third parties are always against the reference standards. On request it is possible to calibrate the meters by 1 of the primary standards. The calibration of a flow point is measured three times. If there is a measurement out of line, to be judged by the operator, two additional measurements will follow. The judgement complies with the specifications concerning the reproducibility of the flow meter on the stand.
Key fields:
- Calibration services all over the world especially for flow metering.
- Consultancy on metering solutions and integrity studies.
- Instrumentation management and maintenance.
- Research on metering solutions.
Specialties:
- Calibration of all flow metering instruments.
- Flow calibration of instruments in steam applications and "fingerprinting" (Reynolds).
- Metering management and integrity.
