Multimeter calibration for mining
On a mine site the multimeter is the instrument used to prove a circuit is dead before anyone touches it, and the one that appears first in any electrical incident review. Prequalification packs increasingly require a current certificate for every meter in the electrical crew.
The multimeter is the instrument most electricians and technicians trust without thinking about it, which is exactly why it needs a traceable calibration. AmpTech calibrates handheld and bench digital multimeters in our Caversham lab against reference standards traceable to national standards, and returns them with a certificate showing where each range sat before and after adjustment.
Interval in mining
12 months, or 6 months for meters in daily site use
Heat, dust and vibration accelerate drift
Setting the interval
Twelve months is the near-universal manufacturer and quality-system default. Meters used daily on site, exposed to heat and vibration, or used for safety-critical measurements are often placed on a shorter interval.
What the calibration covers
- DC voltage at points across each range, from millivolts to the top of the highest range
- AC voltage at several amplitudes and at mains and higher test frequencies
- DC and AC current on every current range, including the milliamp and microamp ranges
- Resistance from a short-circuit zero through each range
- Frequency, and capacitance where the meter offers it
- Continuity beeper threshold and diode test function
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 multimeter-specific items below.
- As-found and as-left readings for every range and function tested
- The reference instruments used, with their own traceability
- Whether the meter met its manufacturer specification on each range
- 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 multimeters 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.
Multimeter calibration for mining FAQs
Our electricians are FIFO — how do we keep their meters in calibration?
Do you calibrate multimeters to the manufacturer specification?
What happens if my multimeter fails calibration?
Related pages
Get a multimeter calibration quote for mining
Send us your equipment list for a fast, no-obligation quote — or call and speak to a calibration technician today.