True RMS clamp meter price starts with a comparable measurement basis
LinkScope Sourcing 52 is an independent sourcing partner. A true rms clamp meter price is usable only after the brief names the measurement function, the current range, the stated accuracy, the frequency range the RMS converter actually covers, and the safety category printed for the exact model.
Average-responding meters can look cheaper on a one-line offer and still misread distorted current from a UPS, a variable-frequency drive, or an LED driver in a telecom closet. True-RMS is a calculation method, not a brand tier. Ask each factory which crest factor, often 2 or 3 at mid-range, the accuracy figure still holds, and whether that figure is percent of reading, percent of range, or both.
Request Factory Quotes
- Jaw and input: AC only, or AC plus DC?
- Reach: lead length and jaw opening in millimetres.
- Power: battery type and stated runtime hours.
- Host circuit: voltage class and conductor size.
- Evidence: datasheet revision and calibration certificate.
Four checks before a price row is comparable
| Step | What the buyer records | What stays open |
|---|---|---|
| 1. Function | AC current, DC current, voltage, resistance, frequency, or inrush. | Whether the quoted firmware includes logging. |
| 2. Accuracy window | Example target such as 1.5% of reading plus 5 counts, from 40 Hz to 400 Hz. | The crest factor at which that window collapses. |
| 3. Quote scope | Meter, case, leads, current jaw, calibration paper, Incoterm, and currency. | Freight, duties, and spare leads if omitted. |
| 4. Incoming check | Model, serial, jaw alignment, and a known 10 A source if the lab has one. | Who signs the deviation if the certificate is older than 12 months. |
A procurement scenario, not a customer result: a US integrator comparing two 400 A jaws for rack-feed measurements wrote the 40 Hz to 400 Hz window into the sheet. One offer priced an average-responding meter. After the datasheets were lined up, the second offer was the only row that stated true-RMS and a CAT III 600 V input category. The desk did not declare a winner. It stopped the buyer from subtracting the two headline numbers.
Who has to agree before the RFQ leaves the building
Procurement manager
Owns quantity, destination, currency, and whether the target budget is per unit or for the whole order. A budget is a buyer ceiling, not a price this desk has verified.
Network engineer
Owns the circuit: conductor diameter, expected current, and whether the waveform is sinusoidal. Measurement accuracy is their call, not a catalog adjective.
Field technician
Owns jaw opening, display counts in sunlight, and whether a 30 mm jaw fits the feeder. Ingress protection, if required, is written as an IP code to confirm, not assumed.
Quality reviewer
Owns calibration traceability: lab name, date, interval, and whether the certificate names the same model and range the quotation sells.
Delivery questions that change the payable total
Does the quotation include the calibration certificate in the same carton?
Ask. Some factories ship the meter on one commercial invoice and the certificate later. A 12-month interval that starts at manufacture may already be partly consumed on arrival.
Which Incoterm applies to the US destination?
EXW and DDP are different totals. Record the named place. Do not compare a meter-only EXW figure with a delivered figure that includes leads and a spare battery.
Are replacement leads in the price?
Probe impedance and connector style belong on the accessory line. A fused lead set is a different part from a plain pair. If the offer is silent, mark the line excluded.
New instrument or refurbished?
New stock usually carries a clearer warranty path. A refurbished meter can cover a discontinued range when serial history, remaining calibration, and the support route are written down. Neither path is assumed here.
Send the spec sheet for a factory-quote pass
Share function, range, accuracy, safety category, quantity, and destination. LinkScope Sourcing 52 will ask factories to answer on that sheet. Compatibility with a live circuit is confirmed on the exact proposed model, not from this page.