Market guide
Start with the circuit, hazard and measurement
Define the work before selecting a meterThe correct instrument begins with the circuit location, available energy, environment and required measurement. A familiar brand or high CAT label cannot authorize live work.
01
Circuit
Map the measurement location
Name source, distribution, branch, load, maximum voltage, prospective transient environment and whether de-energized testing can answer the question.
- Category
- Match the complete meter, terminal, lead, tip, fuse and accessory to the named measurement category and voltage.
- Current
- Direct current inputs create a different fuse, jack and time-limit hazard from a clamp accessory.
02
Task
Name the measurement and conditions
Specify DC accuracy, AC bandwidth, crest factor, current, resistance, temperature, capacitance, frequency, continuity, LoZ, low-pass filter or logging needs.
- Counts
- Display resolution is not complete accuracy, calibration uncertainty or safety.
- Waveform
- True RMS remains bounded by frequency, crest factor, range and signal level and does not replace waveform analysis.
03
Work
Start with the safe-work method
Qualified-person rules, de-energization, lockout, proving, PPE and approach boundaries govern the task before the meter does.
- Prove
- Use the required known source or proving unit before and after an absence-of-voltage check.
- Boundary
- A reading does not diagnose a machine, certify a circuit safe or guarantee a correct repair.
Evidence used
First-party sources behind this guide
- 01Electrical safety and qualified-work resourcesOSHA · checked August 17, 2026Open source
- 02Digital multimeter safety resourcesFluke · checked August 17, 2026Open source
- 03Current handheld digital multimetersKeysight · checked August 17, 2026Open source
- 04Digital multimeter product and service informationHioki · checked August 17, 2026Open source