Gas meters - Justervesenet

Gas meters

Supervision and requirements for measuring energy gases and petroleum products

When measuring using a scale, tank level measurement, draft survey or flow meter:

If a scale is used and the measurement is for financial settlement, the scale must meet the requirements in the instrument-specific regulation.
If tank level measurement is used, the tank must be calibrated and the measurement system must meet the maximum uncertainty requirements, see the Regulation on calibration of measuring tanks used for financial settlement.
If a draft survey is used, there are no requirements for the measurement.

When using flow meters where the product is in either gas phase or liquid phase when measured:

If the product is in liquid phase when measured, the requirements in the Regulation on requirements for measuring systems for continuous and dynamic measurement of liquids other than water apply.
If the product is in gas phase and not used in petroleum activities on the continental shelf, there are currently no requirements for the measurement. The Norwegian Metrology Service will, during 2023, propose requirements for combustible gases for households, businesses and light industry. These requirements will be based on the MID requirements for gas meters and will therefore follow existing harmonised technical regulations adopted elsewhere in Europe. Certified meters are already widely available.

For measurements related to the extraction of petroleum products, enquiries must be directed to the Norwegian Petroleum Directorate, which can provide guidance on the Regulation on fiscal measurement in petroleum activities (måleforskriften – the Measurement Regulation).

Do you need documented verification of your measuring instruments – at a time that suits you?

The Norwegian Metrology Service offers on-request verification as one of our services. As a neutral third party, we can carry out verification and in-use inspections and issue documentation. We have the equipment and expertise to help your enterprise meet the requirements for measurements.

Frequently asked questions

Which measuring instruments are subject to surveillance? 

All measuring instruments used for financial settlement in trade and industry – for example, scales, fuel dispensers, and water meters – are subject to supervision.

Does surveillance involve costs? 

Many of the Norwegian Metrology Service’s supervision areas are financed via annual fees paid by the relevant industry. Other actors will receive an invoice after supervision. You can find pricing information here.

How are summons, decisions and receipts from the Norwegian Metrology Service sent? 

In connection with supervision of measuring instruments, the Norwegian Metrology Service sends summons, decisions and receipts digitally via Altinn. This follows from the Digitalisation Circular (Digitaliseringsrundskrivet), which requires businesses to receive digital correspondence from public authorities.

How do I find correspondence from the Norwegian Metrology Service in Altinn?

Select the correct enterprise/profile when logging in to Altinn, in the top right corner.
Check that you have the role “Post/Archive” for the enterprise you represent.
Look in folders such as “Archived” and “Deleted messages” – the correspondence may have been moved.
If you still cannot find the correspondence, contact Altinn user service:
- Telephone: 75 00 60 00
- www.altinn.no

How to find letters sent before 2025 in Altinn

If you cannot find letters from the Norwegian Metrology Service (Justervesenet) that were sent before 2025, they may be located in the “old Altinn”.

Altinn user support informs us that the documents should be available to users with the correct access rights.

If you need assistance, you can contact Altinn by phone at +47 75 00 60 00, by email, or via their website.

What must I do after a supervision? 

If nonconformities are found, you will receive guidance on what must be corrected, a deadline for remediation, and information on any fees.

What happens during a supervision? 

Supervision may involve checking the measuring instrument or the measurement process, providing information on correct use, and guidance on the regulations. After supervision, the enterprise receives a report or a decision.

Why does the Norwegian Metrology Service carry out supervision of measuring instruments? 

Supervision ensures that measuring instruments used in trade and industry provide correct and fair measurements – for the benefit of both consumers and businesses.