Data record `instr.clamp-meter.true-rms`

Verified 2026-10-27 Confidence: High

The current drawn by variable-speed drives, electronic ballasts and computers flows in short pulses rather than as a sine wave, and the wave shape has a strong effect on a clamp reading, so a true-RMS clamp meter is used where such loads are measured.

Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.

Provenance: the chain from source to entry.
Step	Item	Detail
Source	Fluke learn article	Manufacturer page
Data record	instr.clamp-meter.true-rms	Verified 2026-10-27
Entry	Clamp meter	No revisions

Subject: Clamp meter (Instrument classes)
Kind: Instrument fact
Source: Fluke learn article, web page edition, What is true-RMS?, Fluke. Publisher page

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-27	created
2026-10-27	revised
2026-10-27	review_status unreviewed -> software_reviewed

Cite this page

Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record instr.clamp-meter.true-rms." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/instr.clamp-meter.true-rms/.

Test Instrument Reference, Data record instr.clamp-meter.true-rms (Oct. 27, 2026), https://www.testinstrumentreference.com/data/instr.clamp-meter.true-rms/.

@misc{etr-data-instr-clamp-meter-true-rms,
  title = {Data record instr.clamp-meter.true-rms},
  howpublished = {\url{https://www.testinstrumentreference.com/data/instr.clamp-meter.true-rms/}},
  organization = {Test Instrument Reference},
  publisher = {Test Instrument Reference},
  year = {2026},
  note = {last substantive change 2026-10-27}
}

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