The accuracy of electrical testing equipment can drop over time. To avoid safety issues or process failures, it is critical to ensure that any electrical testing equipment used within your business is regularly calibrated.

There are no official British standards which state the frequency of electrical equipment calibrations. So unfortunately, there is no short answer to the question.

Every instrument will have a different calibration frequency requirement that comes recommended by the manufacturer. Combine that information with industry best practice which advises leaving no more than 12 months in between calibrations and you’ve got a good starting point.

However, there are also other scenarios where more frequent calibrations could be required: