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

On-site calibration of measuring instruments is often very time-consuming and expensive. This is also true for applications with several measurands. One of these of this may be the metering skid, a system 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 point: with the multi-functional CPH8000-P1 calibrator from WIKA, a ?calibration laboratory in a case?.
The heart of a metering skid is the flow computer. It processes the information from all of the measuring instruments and calculates the precise amount of gas that flows to the customer. ไดอะแฟรม is compressible, so the monitoring of pressure and temperature during gas transfer plays an essential role.
Verification is the law
Because even small measuring errors can cause noticeable losses in turnover, the measuring instruments must be calibrated regularly. Normally, this is done at the facility. Each on-site calibration must be verified relative to regulations. This means proving consistent repeatability of the test outcomes and traceability to the assigned references. Furthermore, the regulations require the test equipment to be approved for use in hazardous areas.
In view of certain requirements, the calibration personnel of WIKA customers previously had to use many different pieces of equipment as a way to adequately fulfil their tasks. As well as 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 time and effort accordingly.
pressure gauge 10 bar -P1 multi-functional calibrator significantly reduces the effort required for on-site calibration.
Four measuring channels
The gas company in Saudi Arabia has reduced this effort in one fell swoop with the CPH8000-P1 portable multi-function calibrator from WIKA. The case-mounted instrument calibrates pressure measuring instruments along with resistance thermometers and thermocouples. The test pressure is generated having 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
Through the test procedure, the CPH8000-P1 ? via pressure gauge 10 bar integrated HART� module ? communicates directly with the measuring instruments, which may also be HART�-capable. Its powerful data logger and the large memory capacity support the user in the subsequent documentation of the on-site calibration. The unit provides all the details relevant for verification.
Note
Detailed home elevators the model CPH8000 multi-function calibrators is available on the WIKA website. Each instrument has a modular design and may therefore be specified for the respective selection of applications. In case you have any further questions, your contact will gladly assist you to.

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