PAT Device Calibration
Accurate results start with a calibrated instrument. NZ-wide service from our calibration lab.
Metrel DeltaPAT Calibration
The Metrel DeltaPAT is a capable and popular tester, but like any precision instrument it needs regular calibration to ensure results stay accurate. Whether you bought your DeltaPAT from us or elsewhere, our centrally located calibration lab is set up to handle it.
We also calibrate the full Metrel range and other brands including the other popular brands such as Sonel, Seaward and Meggar.
Got a Metrel DeltaPAT 3309 BT? We offer affordable calibration for the DeltaPAT — one of the most widely used PAT testers in New Zealand. Send it to us from anywhere in the country and we’ll have it checked, serviced, and back to you fast.
Why Calibration Matters
Your PAT tester is only as reliable as its last calibration. Over time, components drift and readings can shift — meaning a “pass” result may not truly be a pass. Regular calibration ensures your test results remain accurate, your compliance with AS/NZS 3760:2022 is maintained, and the people relying on tested equipment stay safe.
As stated in the Standard (Appendix A, A6): “The verification should be carried out against a calibrated source” and “it is recommend that calibration is carried out within the timeframe specified in the manufactures instructions”
Most manufacturers recommend annual calibration, but if your tester is in heavy daily use — doing hundreds of tests per week — you may want to consider every six months. For lightly used testers, 18 months may be appropriate.
What We Calibrate
We calibrate a wide range of PAT testers — whether you purchased yours from us or not. Brands we regularly service include:
|
Metrel (incl. DeltaPAT) |
Sonel |
Seaward |
|
Megger |
Kyoritsu |
Aegis |
Don’t see your brand listed? Give us a call — chances are we can still help.
What’s Involved in a Calibration
A PAT tester has many test functions — earth continuity, insulation resistance, leakage current, RCD trip times — each with different ranges, outputs, and tolerances. Calibration involves checking every function against our reference-grade instruments to confirm the tester is reading within specification.
Where possible, if a tester’s readings have drifted outside tolerance, our technicians will carry out adjustments to bring it back into specification. We keep the necessary reference equipment and procedures on hand to support this for the testers we work with most.
If your tester has an issue that can’t be resolved through calibration, we’ll let you know what’s going on and provide a quote for any further work before proceeding.
MedCal — Calibration + Health Check
Since your tester is already with us for calibration, it makes sense to give it a full health check at the same time. We call this a MedCal — a medical and calibration combined.
Our technicians will open the unit, clean it out, check for signs of trouble such as loose fittings or overheating, verify the internal battery voltage, and service the printer (including the cutter, if fitted). If we find a problem, we’ll fix minor issues on the spot or contact you with a quote for anything more involved.
A MedCal typically adds just $45–$90 + GST on top of the calibration fee — a small price for preventative maintenance that helps you avoid breakdowns at the worst possible time.
Our Calibration Lab
Our fully equipped calibration and repair lab is based centrally in the country, with an extensive stock of parts and specialist reference equipment. We accept testers from right across New Zealand — simply post your unit to us and we’ll freight it back once the work is complete.
Our lab handles hundreds of calibrations every year across a wide range of makes and models, so you can be confident your tester is in experienced hands.
How It Works
- Get in touch Call us on 0800 638 768, email help@metrotest.co.nz, or fill in our online service form to book your calibration.
- Send your tester Post your PAT tester to our Blenheim lab. Please note any faults or concerns you’ve noticed.
- We calibrate and report Our technicians check every function, carry out adjustments where possible, and issue a calibration certificate. If repairs are required, we’ll contact you with a quote before proceeding.
- Returned to you Your calibrated tester is freighted back, ready to deliver accurate, reliable results.
Turnaround Time
Most calibrations are completed within a few business days, depending on volume and whether adjustments or repairs are needed. If a unit requires parts or manufacturer involvement, we’ll keep you informed at every step.
Can’t afford downtime? If you really can’t be without your tester while it’s with us, we can organise a loan tester to keep you working.
Why Choose Metrotest
Real calibration — not just a check. We verify every function against reference-grade instruments, and where possible carry out adjustments to bring your tester back into specification.
NZ’s most experienced PAT calibration team. We’ve been in the test and tag industry longer than anyone in New Zealand, and our directors have been building and calibrating testers since 1992.
We repair what we sell — and what others sell. If your calibration reveals a fault, our in-house repair team can usually fix it without sending it overseas.
Loan testers available. Need to keep working? We can lend you a tester while yours is in our lab.
Nationwide service from situated in the top of the South. Post your tester to us from anywhere in New Zealand — we’ll freight it back once the work is complete.