Measuring devices are critical equipment in your process and plant. Correct measurements are essential in ensuring the quality of your product. Therefore, it is vital that these devices are regularly calibrated to ensure they are operating as they should.

Calibration involves checking the measures taken by a device and comparing these against a traceable reference to ensure they are accurate.

Why calibrate?

  • Product quality
  • Economic reasons
  • Safety
  • Environmental reasons
  • Regulatory requirements

Even the best instruments drift over time. With key decisions often based on these instrument readings it is essential that you can be confident they are accurate.

How often should you calibrate your instruments?
Each instrument Is different. Key factors that will help decide the appropriate calibration interval include:

  • The manufacturers recommendation
  • Past experience
  • The interval currently being used for existing instruments
  • National standards


Device vs Loop Calibration
Device calibration focuses on one specific device. The device is calibrated at install to create a benchmark and is periodically checked for accuracy.

Individual Calibration:


Loop calibration involves looking at the performance of the entire loop and all its components including the sensor, transmitter, wiring, input card etc. These all work together to measure the process parameter.

Loop calibration:



The other key step in the calibration process is the documentation of the results. EAS provides calibration certificates for all work done ensuring that your paperwork is all up-to-date.

It is essential that calibrations are carried out by trained skilled professionals like the Electrical & Automation solutions (EAS) team.  If you need an instrument calibrated or want to discuss setting up a calibration timetable, get in touch with the EAS team today on 07 834 0505.

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