Clamp meter calibration for mining
Clamp meters on a mine site are used for motor current checks, load balancing and fault finding on plant that cannot be shut down for a series measurement. Dust in the jaw faces is the most common reason a site clamp reads low.
A clamp meter reads current without breaking the circuit, which makes it the default tool for load surveys and motor checks — and makes its accuracy hard to sanity-check in the field. AmpTech calibrates AC and DC clamp meters in our Caversham lab, driving known currents through the jaw from a traceable reference and checking the meter's other functions at the same time.
Interval in mining
12 months
Manufacturer default; shorten for dusty plant
Setting the interval
Twelve months is standard. Clamps used for energy audits or for readings that feed into invoicing or reports are often kept on a tighter interval because the current reading is the product.
What the calibration covers
- AC current at points up to 11 A, the ceiling our calibrator sources directly
- DC current on Hall-effect clamps, including zero offset after the jaw is opened and closed
- Voltage and resistance functions where the meter provides them
- Frequency and inrush functions where fitted
- Jaw closure and alignment — a jaw that does not close cleanly reads low
What your certificate records
The certificate format mining procurement and audit teams ask for: the equipment under test, its serial number, the reference instruments used, as-found and as-left readings, environmental conditions and a traceability statement, plus the clamp meter-specific items below.
- As-found and as-left current readings at each test point and range
- Results for voltage, resistance and any other functions tested
- Reference current source and other standards used
- Environmental conditions at the time of calibration
Standards & frameworks in mining
- ISO 9001 quality management system
- AS/NZS 3760 for portable electrical equipment on site
- WHS (Mines) Regulations 2022 (Western Australia)
- Operator-specific prequalification requirements
How mining clients get clamp meters to us
Calibration is performed in our Caversham lab — not on site. We collect from and deliver back to mining workshops and offices across Perth, and instruments from regional sites come by freight or via your Perth base.
- Mining head offices in Perth CBD and West Perth
- Welshpool / Kewdale freight and equipment hubs supporting Pilbara operations
- Malaga and Bayswater workshops fitting out mine vehicles and tooling
- FIFO bases at Perth Airport — fast-turn calibration before flights out
Working with mining procurement
We work with mining procurement teams on POs, prequalification packs and instrument-by-instrument quotes. Every calibration ships with a clear certificate showing as-found / as-left readings and a traceability statement — exactly what auditors and PMC reviews ask to see.
Clamp meter calibration for mining FAQs
Should we send the clamp meters with our multimeters?
Do you calibrate the current clamp or just the meter functions?
How much current can you actually apply through the jaw?
Related pages
Get a clamp meter calibration quote for mining
Send us your equipment list for a fast, no-obligation quote — or call and speak to a calibration technician today.