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Reliable calibration using hydrocarbons

Wintershall Dea GmbH qualifies flowmeters at Endress+Hauser

Wintershall Dea GmbH searches for and produces natural gas and crude oil worldwide. The company also operates crude oil caverns for Germany's national reserve. When storing or removing crude oil and gasoline, Promass F type Coriolis flowmeters are used for custody transfer. With the new factory calibration rig from Endress+Hauser in Reinach (CH), a legally required calibration of Promass F 300 with hydrocarbons will be significantly cheaper for Wintershall Dea than an on-site calibration.

Picture of customers Wintershall in front of hydrocarbon calibration rig at Endress+Hauser Flow ©Endress+Hauser

Final acceptance of Promass F on the new hydrocarbon flow calibration rig from Endress+Hauser. From left to right: Olaf Flieth (Endress+Hauser), Jonas Bösking, Timo Siedenberg (Wintershall Dea GmbH).

high-precision piston provers at hydrocarbon flow calibration rig at Endress+Hauser Flow in Reinach ©Endress+Hauser

In the new flow calibration rig from Endress+Hauser, high-precision piston provers serve as the primary reference for calibration using hydrocarbons.

The result

  • Massive cost and time savings compared to on-site verifications

  • Considerably easier acceptance by the Weights and Measures Service

  • High performance – hydrocarbon calibration rig traceable to national standards, accredited acc. to ISO/IEC 17025

Picture of customers Wintershall in front of hydrocarbon calibration rig at Endress+Hauser Flow

The new hydrocarbon flow calibration rig from Endress+Hauser in Reinach (Switzerland) was highly impressive. Its conception and design are technically very compelling.

Timo Siedenberg, Head of Pipeline Service / Petroleum Storage
Wintershall Dea GmbH – Germany

The customer requirement

Because of the national Measures and Verification Acts as well as international standards (OIML R117, API, etc.), it is common practice in the oil industry for custody transfer measuring points to be calibrated or verified on site using a reference – e.g. a master meter or a piston prover. Such measurements are often complex, costly or impossible for practical reasons. This is why Wintershall Dea was looking for an option to avoid on-site verifications while remaining compliant with the law.

Our solution

With the hydrocarbon flow calibration rig in Reinach (CH), Endress+Hauser was able to offer Wintershall Dea a real alternative to costly on-site calibrations. The calibration measurements were taken at various flow rates and viscosities. This made it possible to determine correction factors depending on the flow rate (Q) and the Reynolds number (Re) to ensure full compliance with the legally required maximum permissible error on site.

Technical data – Hydrocarbon calibration rig

  • Flow range: 2 to 1200 m3/h (13 to 7548 bbl/hour)

  • Viscosity range: 15 to 300 cSt

  • Nominal diameter range: DN 50 to 400 (2 to 16")

  • Expanded measurement uncertainty: ±0.05% o.r.

  • Primary reference devices: piston provers

  • Secondary reference devices (master meters): „Promass“ Coriolis flowmeters

  • Accredited by the Swiss Accreditation Service (SAS) in accordance with ISO/IEC 17025

  • Calibration in accordance with either OIML R117 or API MPMS Ch. 4.8