Calibration

Validation and adjustment services for measuring devices and metering solutions

  • From standard factory calibrations and special calibrations for custody transfer to extensive adjustments of measurement parameters

  • Certified KROHNE calibration facilities with many years of calibration experience

  • Test documentation with calibration certificates

  • Accredited calibrations available on request

At a glance

  • Calibration service for flow, level, pressure and temperature
  • Comprehensive calibration portfolio from standard calibrations and functional tests to customised and witnessed calibrations to extensive device adjustments
  • With over 150 KROHNE calibration facilities for every measured variable and every device type
  • Our calibration equipment is traceable to national and international standards (ISO 9001); accredited calibrations can also be carried out (in accordance with ISO 17025, UKAS, RVA; DAkkS etc.)
  • Calibration carried out by experienced and regularly trained calibration engineers to ensure quality and continuity
  • Special solution-related calibration services for metering systems, metering control systems, wet gas systems, sampling and analyser systems, provers, master meter and leak detection systems

Your challenge

KROHNE products are designed to work reliably under real process conditions and to deliver long-term stable measurement results for many years. However, international or national standards, demanding process or environmental conditions and improper use may make it necessary to calibrate and, if required, adjust instrumentation in certified facilities after installation.

Our service

KROHNE offers a comprehensive portfolio of Calibration service options tailored to customer requirements to ensure that our measuring devices always work according to specifications. This includes:

  • Standard factory calibrations against reference instruments

  • Special calibrations for custody transfer measurements and fiscal metering in accordance with MID, OIML, AGA and other standards

  • Calibrations with adjustment of the function-preserving metrological constants

  • Calibrations with a complete parameter adjustment

Thanks to our many years of experience, calibration is now one of our core competences. Thanks to a worldwide network of more than 150 calibration facilities, we are able to calibrate every device we manufacture. These calibration systems are among the most accurate used in the manufacture of process instrumentation worldwide. They are certified or accredited according to international standards.

Upon request, we offer accredited calibrations for increased requirements in accordance with
ISO 17025 or other standards in KROHNE's own or external calibration laboratories. Our calibration service includes both individual measuring devices and complex measurement and control systems. The accredited facilities are subject to regular testing by metrology institutes. In addition to factory and laboratory calibration, KROHNE also offers mobile calibration as a premium service.

Your added value

  • Long-term stable, reliable and accurate measured values
  • Increased performance and product service lifetime thanks to recommended calibration intervals and parameter settings
  • Facilitate the sustainable and cost- efficient use of measuring devices by extending the product life cycle
  • KROHNE gives you access to many years of calibration expertise with worldwide availability
  • Benefit from the most accurate calibration equipment available in the manufacture of process instrumentation worldwide
  • High calibration reliability thanks to the use of leading-edge calibration technology
  • Everything from a single source: just one contact for comprehensive calibration services

Service options

Calibration only

For each standard calibration, KROHNE compares the field device with a higher reference in certified calibration facilities. For example, flowmeters at KROHNE are always calibrated with a calibration medium, usually water or air. The measuring performance of the customer device is checked and deviations from the reference instrument are documented.

Our service at a glance

  • The measuring device to be tested is calibrated against a reference
  • No adjustments are made to the meter under test
  • A calibration certificate is issued to prove that the calibration has been carried out and the results obtained (as found)

Calibration with metrological verification

KROHNE offers calibrations with metrological verification according to a defined specification for measurements that are subject to calibration or billing. These can be based on the requirements of MID, OIML, AGA or other national and international standards. KROHNE uses certified calibration facilities to check whether the approved measuring device complies with the maximum permissible measurement error and is therefore within the predefined specification. KROHNE then issues a test certificate for the mandatory recalibration. In addition, KROHNE also offers accredited calibrations in accordance with ISO 17025, (RvA, UKAS, DAkkS) and others from a single source.

Our service at a glance

  • Calibration in accordance with predefined specifications
  • Confirmation that requirements of standards (MID, OIML, API, AGA etc.) are fulfilled/complied with; accredited calibrations according to ISO 17025, (RvA, UKAS, DAkkS) and other standards can also be carried out
  • Compliance is confirmed with a verification certificate
  • Specific conditions are taken into account while calibrating (e.g. stipulated measuring ranges and accuracies)

Calibration with adjustment

In addition, KROHNE offers calibration including a basic functional test with an adjustment of the essential metrological parameters. This allows adjustment of those device constants that return a measuring device to its function-preserving state. In the case of flowmeters, these are one or more essential measuring constants, depending on the measuring principle. A device adjustment is particularly necessary if the calibration has resulted in a deviation from the specification.

Our service at a glance

  • The measuring device under test is calibrated against a reference
  • In the event of measurement deviations outside the specification, adjustments are made to the basic parameters in order to restore the function of the measuring device
  • The calibration is performed again to confirm that the adjustments were successful and the meter under test is now operating within the requirements
  • Two calibration certificates are issued: one certificate covering the performance and results of the calibration before adjustment ("as found"), and a second certificate covering the performance and results of the calibration after adjustment ("as left")

Calibration with adjustment of all parameters

In addition to calibration with adjustment of the essential device constants, KROHNE also offers calibration that includes complete adjustment of non-metrological device parameters. Depending on customer requirements, the adjustment ranges from customer-specific troubleshooting and optimisation, e.g. changing the signal/frequency output, to a complete reset of the measuring device to factory settings. With this calibration service, KROHNE can also carry out all settings on the meter under test that offer the customer added value against a specific application background.

Our service at a glance

  • The measuring device under test is calibrated against a reference
  • In the event of measurement deviations outside the specification, not only are the basic metrological device constants adjusted, but non-metrological parameters are also adjusted according to customer requirements
  • The calibration is performed again to confirm that the parameter adjustments were successful and that the meter under test is now operating within the specifications
  • Two calibration certificates are issued: one certificate covering the performance and results of the calibration before adjustment ("as found") and a second certificate covering the performance and results of the calibration after adjustment ("as left")

KROHNE Service Top Tips

Have you already checked our service videos on flowmeter commissioning incl. zero calibration ?

Service for solutions

System calibration & validation for metering systems

Additional diagnostics and monitoring to achieve optimal performance of the system

  • KROHNE certified validation with full audit trail
  • On-site or laboratory calibration of instruments
  • Adjustments according to application requirements
  • Uncertainty calculations with all parties involved
  • Periodical inspection, including environmental and metrological certification

System calibration & validation for metering control systems

KROHNE certified validation with full audit trail

  • Additional diagnostics and monitoring to achieve full performance of the system
  • Verification of the correct firmware and software versions and parameter settings
  • Alarm and error log review
  • Periodical inspection, including environmental and metrological certification

System calibration & validation for wet gas and wellhead flow measurement

Achieving full performance in the field with reliable measurements

  • Optimisation of the system according to application requirements
  • Remote technical assistance by KROHNE experts
  • Test plans and comparison of results
  • Intuitive input of fluid properties for wet gas measurement systems
  • Field validation of measurement performance

Calibration & validation for sampling and analyser systems

Performance verification and additional diagnostics

  • KROHNE certified validation system
  • On-site or laboratory calibration of instruments
  • Adjustments of the systems according to application requirements
  • Monitoring and verification to confirm full performance of the system

System calibration & validation for provers and master meters

Periodic verification and re-calibrations

  • KROHNE certified validation with full audit trail
  • On-site or laboratory calibration of instruments
  • Adjustments according to application requirements
  • Uncertainty calculations with all parties involved
  • Periodical inspection, including environmental and metrological certification

System calibration & validation for pipeline management

Optimisation to operating conditions and achieving full performance

  • Calibration of pipeline protection and monitoring systems
  • Adjustments according to the application requirements to increase sensitivity and enable the accurate identification of pipeline incidents
  • System validation according to effectiveness and certification
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