On-site calibration of measuring instruments is frequently very time-consuming and expensive. This is also true for applications with several measurands. Incapable of these of this may be the metering skid, something for the custody transfer measurement of the quantity of natural gas transferred. A global player in the industry from Saudi Arabia has significantly streamlined the testing process at this time: with the multi-functional CPH8000-P1 calibrator from WIKA, a ?calibration laboratory in a case?.
The heart of a metering skid may be the flow computer. It processes the info from all the measuring instruments and calculates the precise amount of gas that flows to the customer. Natural 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 use in hazardous areas.
In view of certain requirements, the calibration personnel of WIKA customers previously had to use many different devices in order to adequately fulfil their tasks. Besides 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.
The CPH8000-P1 multi-functional calibrator significantly reduces your time and 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 resistance thermometers and thermocouples. The test pressure is generated with an integrated pump. The CPH8000-P1 has four measuring channels. It can 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 its integrated HART� module ? communicates directly with the measuring instruments, which are also 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 info on the model CPH8000 multi-function calibrators can be acquired on the WIKA website. Never includes a modular design and may therefore be specified for the respective selection of applications. Should you have any further questions, your contact will gladly help you.