We calibrate volume measures from 0.01 to over 6000 litres, either gravimetrically (by weighing water) or volumetrically (by transferring water from a more accurate standard). Gravimetric calibration provides lower uncertainty than volumetric calibration. If the volume measure itself is well constructed, we can achieve the following uncertainties:
0.1–5 litres: 0.03–0.05%
5–500 litres: 0.006%
500–5000 litres: 0.02%
Volumetric calibration can only be performed for measures with volumes that are multiples of 0.5, 5, 20 or 100 litres. This method is less costly but yields higher uncertainty.
Volume measures that have been used for liquids other than water must be thoroughly cleaned before shipment. If they are not, we must wash them prior to calibration, and the time spent will be charged accordingly.
By agreement, the Norwegian Metrology Service can carry out minor repairs – typically replacement of sight glasses, bottom valves, etc. – on volume measures. Such work is only performed by prior arrangement with the customer and is invoiced at the standard hourly rate.
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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