Electrical Instrument Calibration

At our CalibrationLab in Portlaoise, we calibrate all makes and models of electrical test and measurement equipment. Our experienced team of instrument technicians calibrate all electrical test instruments in accordance with ISO 10012:2013 standard and in accordance with the specific manufacturer’s standards. Once the instrument’s calibration is complete you will receive a calibration certificate which will note in detail the test results of your electrical meter. All our test electrical calibrations are traceable to national and international standards. With a delivery service available across Ireland and a typical 5 business day turn around, you will receive a speedy, professional and competitive calibration service for all your electrical test instruments.

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We can perform Electrical Meter Calibration on the following types of electrical test equipment:

Electrical Testers:

Digital Multimeters      

PAT Testers

Multifunction Testers

RCD Testers

Loop Testers

Insulation Testers

LCR Meters

Clamp Meters

Decade Boxes/Time Resistance Boxes

Process Meters

mA/Loop Calibrators

PAT Calibration Checkboxes

Bench Top Multimeters      

5kv Insulation Testers

Milliohm Meters

Ground/Earth Testers

Calibration Checkboxes

Voltage Detectors

Socket Testers

Volt Sticks

Proving Units

Power Analysers


Phase Rotation Equipment

If your device is not listed here simply contact us and we will do our utmost to accommodate your request.

We also supply a broad range of electrical test instruments. We stock the leading brands such as Megger, Fluke, Seaward, Klauke, Raychem, 3M, BAUR, CATU and more. Visit our main website www.calibrationlab.ie for more details.



Instrument calibration is a crucial process in verifying the accuracy and precision of measuring equipment to ensure reliability and validity. It involves comparing the output of a device to a standard reference source and correcting any discrepancies.

Multimeters are electronic instruments that measure voltage, current, and resistance in electrical circuits. They are widely used in various industries, including healthcare, manufacturing, research and engineering.

Multimeter calibration is essential for maintaining accurate readings in electrical equipment and preventing costly errors or accidents.  Like any measuring instrument, mustimeters can lose accuracy over time, especially if they are subjected to harsh conditions or frequent use. Therefore, it is crucial that calibration of multimeters is carried out routinely in order to maintain their accuracy and reliability.

We offer multimeter calibration and repair services using highly trained professionals and procedures which comply with industry standards and regulations. We check functions such as operation, continuity beeper, diode check function and condition of test leads. We calibrate the meter through all ranges on each function and all calibration specifications are taken from manufacturers manuals.

We can detect any faults with your instrument and make adjustments where possible at no extra charge. If a repair service is required we will contact you to let you know what the additional charge required is. We also provide calibration certificates and reports to comply with industry standards and regulations.

We offer calibration and repair services on all makes of multimeter including Fluke, Megger, Kewtech, Robin, Iso-Tech and much more.


Clampmeters are calibrated as multimeters and we can input AC and DC currents up to 2000A. Please note that all measurements have to be within manufacturers specifications to pass our calibration test.


These are very accurate instruments and we can simulate and read DC current and voltage to 25ppm which covers nearly all of these instruments.


We test all functions of PAT Testers including Flash output up to 3kV. We also check earth bond leads to ensure they are not giving incorrect earth bond readings.

We are also the only approved calibration lab in Ireland for the Seaward range of PAT Testers. This enables us to reset the calibration alarm and adjust calibration offsets where required. 


We can calibrate these instruments from 1milli ohm to kilo ohm values. We also check your test leads.


We offer a calibration and repair service to cover all functions of the Multifunction Testers. It is now a legal requirement that electricians have these instruments calibrated on an annual basis. Click here to view the Legislation for Electrical Calibration. We can manage all your requirements as we calibrate all makes such as Robin, Fluke, Megger, Kewtech, DiLOg and many more.