Accredited lab calibration of many measurands.
We offer accredited calibration in our fully equipped laboratory in Gothenburg. We calibrate most measuring instruments of all brands. In cooperation with Testo Industrial Services (TIS) we have access to 300 methods for the calibration of up to 50 measurands. In other words, we can help you no matter what your calibration needs are.
Would you like us to calibrate your instruments on site?
Field calibration is a perfect solution for those who, for various reasons, are unable to dismantle and send your measuring equipment for calibration in our lab. Instead, we come and calibrate loggers and sensors on your premises, with minimal disruption to your business. We offer accredited field calibration of several measurands.
We are certified according to ISO 17025 (accredited calibration), ISO 9001 (quality) and ISO 14001 (environment).
All about calibration
Self-monitoring, traceability, adjustment… There is a lot to keep track of in the field of calibration. Here we clarify the concepts.
Decision rule
To ensure that a calibration result complies with specifications or limits, we apply a decision rule.
ISO certified?
ISO 9001 certified companies are required to use calibrated measuring instruments for all measurements important to their business.
See the proof directly on your phone
After completing the calibration, we put a label with a QR code on each instrument. To see the latest evidence, simply scan the QR code with your phone and it will appear on your screen immediately.
We service your measuring equipment
In our service workshop, we weld sensors, check for suspected leaks, replace broken circuit boards and screens – just to name a few common service issues.
Questions & answers on calibration
Here you will find answers to the most common questions asked by our calibration customers.
– The most common error is that the emission factor has been accidentally changed in your IR thermometer. Different materials and surfaces emit different amounts of thermal radiation, so your instrument needs to be set up correctly, depending on what is being measured. The default setting that is correct for most materials is E 0.95.
– Before making an adjustment, the sensor or instrument must be calibrated to see how large the measurement error is. Then the adjustment is carried out. Finally, another calibration is needed to see how large (or rather small) the measurement error has become. The remaining measurement error is entered as a correction value in the calibration certificate. It is extremely rare that the measurement error disappears completely. After an adjustment in one point, other points in the measuring range are affected, especially in temperature and humidity sensors. Therefore, a correction value is still needed in the different points.
– An accredited calibration is performed using a method approved by Swedac, Sweden’s national accreditation body. A traceable calibration is performed with similar quality requirements, with a traceable reference as a comparison measure, but the method used is not approved by Swedac.
– It depends. Often it is laws and authorities that require instruments and sensors to be calibrated, but the requirements can also come from your own business or your own customers.
– For example, ISO 9001-certified industrial companies are required to use calibrated measuring instruments for all measurements important to their business.
– Another example is companies in the pharmaceutical sector that have to comply with Good Manufacturing Practice (GMP) requirements.
– To find out which criteria apply in your particular field, a good place to start is with your professional association. Businesses in the food sector can visit the website of the Finnish Food Authority and look under “Industry guidelines”. There are downloadable documents on what applies to everything from bakeries to breweries.
– The choice of calibration points is always the responsibility of the client. Thus, you need to identify which calibration points within the measurement area are to be checked. If you just want to check that grilled chicken meat has a core temperature of +72°C, it is enough to check just that point. But if, for example, a thermometer is used in a range between -18 °C and +120 °C, you need to select a number of measurement points where it is particularly important that the measurement results are accurate. If you still have trouble choosing points, there are also standard proofs and certificates with a number of common measurement points.
– The most common practice is to calibrate your measuring instruments once a year. However, instruments that are used frequently and in harsh environments may need to be calibrated more often.
– The Swedac website states the following:
To obtain reliable measuring instruments, they should be regularly calibrated by a calibration laboratory. The calibration laboratory compares the measuring instrument with an accurate measure, i.e. a traceable standard.
Our certificates
Here you can download our ISO certificates and see which methods, measurands and ranges we are accredited for.
Not satisfied with the calibration?
At Nordtec, we are committed to maintaining a high level of service and customer satisfaction. If you are not completely satisfied, we would like to hear from you and tell you what we could have done better.
You are welcome to call us on 031-704 10 70 or contact us by email at nordtec@nordtec.se. You can also send your complaint via our form.
After receiving a complaint, we draw up a deviation report. After completing the investigation, we will get back to you on the actions we have taken. Read more about our procedure for your case here.
