Natural gas: On-site calibration optimised at the metering skid

On-site calibration of measuring instruments is frequently very time-consuming and expensive. This is also true for applications with several measurands. One of these of this may be the metering skid, something for the custody transfer measurement of the amount of natural gas transferred. A global player in the industry from Saudi Arabia has now significantly streamlined the testing process at this time: with the multi-functional CPH8000-P1 calibrator from WIKA, a ?calibration laboratory in an incident?.
The center of a metering skid may be the flow computer. diaphragm seal processes the info from all the measuring instruments and calculates the exact amount of natural gas that flows to the client. Gas is compressible, therefore the tabs on pressure and temperature during gas transfer plays an essential role.
Verification may be the law
Because even small measuring errors could cause noticeable losses in turnover, the measuring instruments must be calibrated regularly. Normally, this is done at the facility. Each on-site calibration must also be verified relative to regulations. This means proving consistent repeatability of the test results and traceability to the assigned references. Furthermore, the regulations require the test equipment to be approved for used in hazardous areas.
In view of the requirements, the calibration personnel of WIKA customers previously had to utilize many different pieces of equipment to be able to adequately fulfil their tasks. Along with pressure and temperature calibrators, this included a pneumatic pump for the test pressure, a HART� communicator and a resistance decoder. The on-site calibration cost effort and time accordingly.
The CPH8000-P1 multi-functional calibrator significantly reduces the effort required for on-site calibration.
Four measuring channels
The natural gas company in Saudi Arabia has reduced this effort in a single fell swoop with the CPH8000-P1 portable multi-function calibrator from WIKA. The case-mounted instrument calibrates pressure measuring instruments and also resistance thermometers and thermocouples. The test pressure is generated with an integrated pump. The CPH8000-P1 has four measuring channels. It could thus perform and display around four measurements simultaneously. The ATEX-approved version also supplies the test items and reference sensors in the metering skid with voltage (DC 24 V) without danger.
Documentation without problems
During the test procedure, the CPH8000-P1 ? via digital pressure gauge integrated HART� module ? communicates directly with the measuring instruments, which are also HART�-capable. Its powerful data logger and the large memory capacity support an individual in the subsequent documentation of the on-site calibration. The unit provides all the details relevant for verification.
Note
Detailed information on the model CPH8000 multi-function calibrators can be acquired on the WIKA website. Each instrument includes a modular design and can therefore be specified for the respective selection of applications. In case you have any further questions, your contact will gladly help you.

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