The Norwegian Metrology Service offers calibration for weights in accuracy classes E2, F1, F2, M1, M2, and M3; please see the table below.
Formal requirements for measurement traceability are met. The classification system is based on OIML R 111-1 (*Weights of classes*). This recommendation includes a tolerance table specifying the maximum permissible deviation from the nominal value for the weights.
This category includes weights that are either unclassified or classified according to a standard other than OIML R 111-1. When calibrating unclassified weights, the condition of the weights is evaluated against the utility of the calibration and the customer’s requirements. The Norwegian Metrology Service reserves the right to refuse calibration requests for weights in poor condition or those deemed unsuitable for calibration.
The Norwegian Metrology Service also performs mass determination for weights in cases where accredited calibration is neither desired nor necessary. This may apply, for example, to pound weights, pressure weights, or other objects of comparable accuracy. Mass determination is carried out and invoiced as the calibration of unclassified weights.
Class E2 and F weights are calibrated exclusively at the Norwegian Metrology Service’s facility at Kjeller.
Weights of other classes (M or unclassified) can be calibrated at our Kjeller facility or, where technically feasible, directly at the customer’s premises. On-site calibration can be the best solution when moving weights is difficult or impossible. Contact us to discuss the most suitable option for your needs.
Accreditation with the MRA logo and weight adjustment (where possible) are performed only at Kjeller.
Weight is the force a mass generates due to gravity. The unit of weight is the newton (N), but in everyday use we commonly use the unit of mass: kilogram (kg).
Mass is one of the seven fundamental physical quantities in the SI system. It is the property of matter that gives it inertia and weight. The unit of mass is the kilogram (kg).
All customers have the right to submit a complaint if they are dissatisfied with a calibration service from the Norwegian Metrology Service. Complaints may be submitted in writing or verbally, and are handled impartially and constructively.
Procedure:
Send written complaints to postmottak@justervesenet.no.
Yes. We offer calibration agreements for customers seeking predictability and efficiency. Through such an agreement, we plan calibrations in advance and schedule your equipment for fixed intervals. Delivery time and price are agreed in advance and stated in the order confirmation before work begins. For customers with several similar instruments, we can arrange batch calibration and provide discounts for efficient execution. Please contact us to discuss a customised agreement.
You can order calibration by contacting the Norwegian Metrology Service via email, telephone or our order form. We are happy to help you identify the correct service and provide practical information on how to send in your instrument.
The price depends on the type of instrument and the scope of the assignment. You can find indicative prices in the Norwegian Metrology Service’s price list.
After calibration, you will receive a calibration certificate documenting the measurement results, uncertainty and references used. The certificate also shows traceability to national or international standards and may be used for audits or quality assurance.
The calibration interval should be based on the required accuracy, frequency of use, and the consequences of potential measurement errors. Instruments used frequently, under demanding conditions, or for critical measurements should be calibrated more often than those used rarely or under stable conditions. For instruments used in commercial transactions, legal control intervals may be set by regulation. For other types of instruments, recommendations can be found in Norwegian Accreditation guidelines (e.g. NA-Dok 26a for scales) and international documents such as ILAC-G24.
We recommend assessing your specific needs and contacting us for advice on calibration intervals suited to your instruments and applications.
When you order a calibration, we first agree on the instrument type and the tests required. You then send the instrument to us, or we arrange on-site calibration if necessary. Our experts perform the calibration in accordance with international standards, and you receive a certificate showing the results, uncertainty and traceability. The instrument is then returned to you safely.
Phone:
64 84 84 84
E-mail:
postmottak@justervesenet.no
Contact form:
Fill in our contact form, and we will respond as quickly as possible.
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