How do you calibrate a length measuring device?

How do you calibrate a length measuring device?
Although it is not mandatory, you might want to have your length measuring device calibrated. What is ‘calibration’ exactly and why should you do it? Calibration means that the measured value displayed by a measuring device is compared to a reference value. It can be used to determine the accuracy of measurements produced by a length measuring device. Calibrated devices are issued with a calibration certificate. Venrooy’s length measuring devices are calibrated at an external calibration centre.

Why calibrate?

Measuring device calibration is becoming increasingly important – not only to ensure compliance with standards and regulations, but also to improve processes, reduce costs and ensure quality. If your company is ISO certified, you will often be required to regularly calibrate your devices. The calibration certificate can be used to prove that the device in question meets the accuracy standards. If you are not certified, it is up to you whether you decide to have your equipment calibrated or not. The cost of calibration is often the main factor when making this decision. You should also consider the importance of being able to verify the accuracy of the device. If you supply cables to third parties and you run the risk of receiving claims, a calibration certificate is desirable because it proves the accuracy of your equipment. Download length measuring device guide


Calibration takes place at an accredited organisation. Under controlled conditions – such as a constant room temperature of 20 degrees Celsius – the measurement produced by the device to be calibrated is compared to the measurement produced by a calibrated reference device. Comparison measurements are taken at 100, 300 and 900 metres. The values measured on the length measuring device at that time are recorded on the certificate. You do not want to have your device officially calibrated, but you do want to have its accuracy checked regularly? You can use the same cable (of a specific length) as a reference and regularly compare it with a cable that you feed through the device. If changes in measurement accuracy are noticed during calibration, the most likely causes are wear and tear, drift of electronic components or device contamination.

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If you would like more information about calibrating your length measuring device? Feel free to get in touch. Download length measuring device guide