SAC-SINGLAS Accredited · ISO/IEC 17025
Clamp Meter Calibration in Singapore
Unitest calibrates clamp meters in Singapore — including Fluke — across DC clamp current 0 mA to 1500 A and AC clamp current 10 mA to 1500 A, under SAC-SINGLAS accreditation LA-2023-0845-C (ISO/IEC 17025). Standard turnaround is 5–7 working days; express service is 2–3 days, with free collection and delivery in Singapore for orders above $300.
Also known as: Digital Clamp Meter · Current Clamp · Clamp-On Ammeter
Why calibrate?
Unitest provides SAC-SINGLAS accredited clamp meter calibration in Singapore for AC/DC current (up to 1500 A), AC/DC voltage and leakage current, with traceable ISO/IEC 17025 certificates. The jaw mechanism can shift over time — calibration confirms the clamped current reading is accurate.
What you receive
What clamp meter calibration at Unitest covers
Traceable certificate
Calibration certificate with an unbroken traceability chain to national and international standards, recording the as-found condition before any adjustment.
Stated uncertainty
Results reported with measurement uncertainty, so you know exactly how much confidence each reading carries in your quality system.
5–7 day turnaround
Standard turnaround 5–7 working days; express 2–3 working days on request. Free collection and delivery within Singapore for orders above S$300.
Part of our electrical calibration service, accredited under SAC-SINGLAS LA-2023-0845-C.
How often
How often should a clamp meter be calibrated?
Clamp meters used in electrical installation or maintenance testing should be calibrated every 12 months. If the jaw is dropped, send it in sooner.
Accredited ranges
Clamp Meter calibration ranges & measurement uncertainty
The parameters, ranges and calibration & measurement capability (CMC) below are taken from our SAC-SINGLAS Schedule of Accreditation (LA-2023-0845-C, to ISO/IEC 17025). CMC is the smallest measurement uncertainty we can achieve under accredited conditions.
DC Current Clamp measuring instruments· UNI-E002 Rev:0
| Range / measured quantity | Measurement uncertainty (CMC) |
|---|---|
| 0 mA – 20 mA | 0.14 mA |
| 20 mA – 100 mA | 0.72 % |
| 0.1 A – 4 A | 1.0 % |
| >4 A – 40 A | 0.7 % |
| >40 A – 60 A | 0.67 % |
| >60 A – 200 A | 0.67 % |
| >200 A – 300 A | 0.67 % |
| >300 A – 1500A | 0.67 % |
AC Current clamp measuring instrument (30 Hz – 60 Hz)· UNI-E002 Rev:0
| Range / measured quantity | Measurement uncertainty (CMC) |
|---|---|
| 10 mA – 40 mA | 0.76 % |
| 40 mA – 400 mA | 0.70 % |
| 0.4 A – 4 A | 0.67 % |
| >4 A – 40 A | 0.68 % |
| >40 A – 60 A | 0.72 % |
| >60 A – 200 A | 0.69 % |
| >200 A – 300 A | 0.68 % |
| >300 A – 1500A | 0.67 % |
DC Voltage measuring instrument· UNI-E001 Rev:0
| Range / measured quantity | Measurement uncertainty (CMC) |
|---|---|
| 0 mV – 120 mV | 0.0024 mV |
| >120 mV – 1.2 V | 0.0011 % |
| >1.2 V – 12 V | 0.0017 % |
| >12 V – 120 V | 0.0024 % |
| >120 V – 1020 V | 0.0024 % |
AC Voltage measuring instruments· UNI-E001 Rev:0
| Range / measured quantity | Measurement uncertainty (CMC) |
|---|---|
| 1.0 mV to 12 mV, 3 Hz to 5 Hz | 1.6% |
| 1.0 mV to 12 mV, >5 Hz to 10 kHz | 1.0 % |
| 1.0 mV to 12 mV, >10 kHz to 20 kHz | 0.65 % |
| 1.0 mV to 12 mV, >20 kHz to 50 kHz | 0.66 % |
| 1.0 mV to 12 mV, >50 kHz to 100 kHz | 1.7 % |
| 1.0 mV to 12 mV, >100 kHz to 500 kHz | 3.9 % |
| 12 mV to 120 mV, 3 Hz – 5 Hz | 0.32 % |
| 12 mV to 120 mV, >5 Hz – 10 kHz | 0.17 % |
| 12 mV to 120 mV, >10 kHz – 20 kHz | 0.065 % |
| 12 mV to 120 mV, >20 kHz – 50 kHz | 0.11 % |
| 12 mV to 120 mV, >50 kHz – 100 kHz | 0.25 % |
| 12 mV to 120 mV, >100 kHz – 500 kHz | 1.3 % |
| 120 mV – 1.2 V, 3 Hz – 5 Hz | 0.42 % |
| 120 mV – 1.2 V, >5 Hz – 10 Hz | 0.15 % |
| 120 mV – 1.2 V, >10 Hz – 40 Hz | 0.6 % |
| 120 mV – 1.2 V, >40 Hz – 20 kHz | 0.13 % |
| 120 mV – 1.2 V, >20 kHz – 50 kHz | 0.047 % |
| 120 mV – 1.2 V, >50 kHz – 100 kHz | 0.11 % |
| 120 mV – 1.2 V, >100 kHz – 500 kHz | 0.41 % |
| 1.2 V – 12 V, 3 Hz – 5 Hz | 0.33 % |
| 1.2 V – 12 V, >5 Hz – 10 Hz | 0.5 % |
| 1.2 V – 12 V, >10 Hz – 40 Hz | 0.6 % |
| 1.2 V – 12 V, >40 Hz – 20 kHz | 0.018 % |
| 1.2 V – 12 V, >20 kHz – 50 kHz | 0.035 % |
| 1.2 V – 12 V, >50 kHz – 100 kHz | 0.081 % |
| 1.2 V – 12 V, > 100 kHz – 500 kHz | 0.25 |
| 12 V – 120 V, >3 Hz – 5 Hz | 0.32 % |
| 12 V – 120 V, >5 Hz – 10 Hz | 0.50 % |
| 12 V – 120 V, >10 Hz – 40 Hz | 0.045 % |
| 12 V – 120 V, >40 Hz – 20 kHz | 0.092 % |
| 12 V – 120 V, >20 kHz – 50 kHz | 0.036 % |
| 12 V – 120 V, >50 kHz – 100 kHz | 0.082 % |
| 120 V – 330 V, 3 Hz – 5 Hz | 0.50 % |
| 120 V – 330 V, >5 Hz – 10 Hz | 0.16 % |
| 120 V – 330 V, >10.1 Hz – 20 kHz | 0.021 % |
| 120 V – 330 V, >20 kHz – 50 kHz | 0.039 % |
| 120 V – 330 V, >50 kHz – 100 kHz | 0.17 % |
| 330V – 1020 V, 3 Hz – 5 Hz | 0.29 % |
| 330V – 1020 V, >5 Hz – 10 Hz | 0.12 % |
| 330V – 1020 V, >10 Hz – 10 kHz | 0.04 % |
You can also verify our accreditation on the SAC-SINGLAS directory.
Brands & models
Clamp Meter brands & models we calibrate
The models customers most commonly send in — not our full capability. Every model is quoted individually; request a quotation and we'll confirm ranges, points and turnaround.
| Brand | Model |
|---|---|
| Fluke | 323 |
| Fluke | 324 |
| Fluke | 325 |
| Fluke | 337 |
| Fluke | 365 |
| Fluke | 374 FC |
| Fluke | 375 |
| Fluke | 376 |
| Fluke | 376 FC |
| Fluke | 378 FC |
| Fluke | 381 |
| Fluke | 393 FC |
| Fluke | 771 |
| Fluke | 773 |
| Fluke | i410 |
Don't see your model? Send us the make and model — or WhatsApp us a photo of the nameplate — and we'll confirm capability and quote.
Questions
Clamp Meter calibration FAQ
How often should a clamp meter be calibrated?
Clamp meters used in electrical installation or maintenance testing should be calibrated every 12 months. If the jaw is dropped, send it in sooner.
Is clamp meter calibration accredited?
Yes. Clamp Meter calibration is covered under our SAC-SINGLAS scope of accreditation (LA-2023-0845-C, ISO/IEC 17025), covering DC clamp current 0 mA to 1500 A and AC clamp current 10 mA to 1500 A. Certificates state the measured values and measurement uncertainty, traceable to national and international standards. Where an instrument falls outside the accredited ranges, we can calibrate it as a traceable service instead.
How long does clamp meter calibration take?
Standard turnaround is 5 to 7 working days; express service is 2 to 3 working days. Collection and delivery in Singapore are free for orders above $300.
Which brands of clamp meter do you calibrate?
Commonly submitted brands include Fluke. This list covers the models customers most often send in, not our full capability — send us your make and model and we'll confirm whether it falls within our accredited scope or can be calibrated as a traceable service.
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Need clamp meter calibration?
Submit your instrument list — we'll confirm capability, turnaround and pricing, no obligation.