NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for digital bench voltmeters, handheld DMMs, and panel voltmeters. DC 1 mV–1000 V and AC 100 mV–1000 V. IEC 61010. All makes.
±0.005%
DC Accuracy
1 mV–1000 V
Range
IEC 61010
Standard
IEC 61010
Electrical Measuring Instruments
NABL Accredited
CC-2480
— WHAT IS VOLTMETER CALIBRATION —
Think of a quality lab that relies on a voltmeter for daily measurements. If it has drifted even slightly from its true value, every reading becomes unreliable — leading to defective products, failed audits, or safety risks. Regular calibration is the only way to confirm your instrument is telling the truth.
Voltmeter calibration means comparing its readings against a NABL-traceable certified reference standard at multiple test points, recording the deviations, adjusting where possible, and issuing an NABL certificate — accepted by ISO 9001, IATF 16949, and all quality auditors.
Compare readings against a NABL-traceable reference standard across the full measurement range.
Adjust or document deviations so your instrument reads within accepted tolerance.
Issue a NABL-accredited certificate (CC-2480) with full traceability documentation.
— INSTRUMENTS COVERED —
Bench DMM / Handheld / Panel / HV Probe / DAQ · All Makes · IEC 61010 · NABL accredited
Analog moving-coil voltmeters for AC and DC voltage measurement.
Digital voltmeters with high-resolution display for lab and field use.
Panel-mount voltmeters for switchgear and MCC panels.
Portable handheld voltmeters for on-site electrical testing.
High-voltage voltmeters for substation and transformer testing.
Precision bench voltmeters for laboratory reference applications.
— OUR PROCESS —
Voltmeter received. Input ranges, function selector positions, and rated accuracy class documented.
NABL-traceable precision voltage calibrator (Fluke 5522A or equivalent) set to first voltage setpoint. Voltmeter connected per manufacturer procedure.
Calibration performed at 5–7 points per range: 0%, 25%, 50%, 75%, 100% of each range. Both DC and AC functions calibrated separately.
For AC voltmeters: accuracy verified at 50 Hz and 60 Hz. Wide-band AC voltmeters additionally verified at 1 kHz and 10 kHz.
Error at each calibration point documented. Expanded uncertainty (k=2) per GUM. Results compared to manufacturer specification.
NABL CC-2480 certificate with voltage data, deviations, uncertainty (k=2), IEC 61010 traceability.
— STANDARDS & COMPLIANCE —
IEC 61010-1
Safety for Electrical Measuring Instruments
IEC 60051
Analogue Indicating Instruments
NPL Traceable
Primary Voltage Reference
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Voltmeter calibration certificates accepted by ISO 9001, pharma, IATF 16949, and all process industry QMS audit bodies.
— NON-NABL CALIBRATION —
For routine maintenance, bulk calibration, or internal QC checks where a full NABL certificate is not mandatory — Prism offers cost-effective non-NABL calibration using the same NABL-traceable reference standards and trained engineers.
All non-NABL work uses NABL-certified reference standards — readings are still reliable and defensible.
Without full NABL documentation, instruments return faster — ideal for urgent production schedules.
Non-NABL calibration costs less — practical for large batches or routine periodic checks.
Available at your facility or at our Vatva lab — same quality, more flexibility.
— AREAS WE SERVICE —
Courier pick-up and delivery across Gujarat. Typical 1-day turnaround for voltmeters.
Why Choose Prism
Since 2004, every NABL voltmeter certificate from Prism has been accepted by ISO 9001, pharma, and industry audit bodies — no rejections.
— FAQ —
Get In Touch
Share the make/model, voltage range, and quantity. We respond within 2 business hours.
— FROM OUR BLOG —
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Read MoreNABL Accreditation Disclaimer
Calibration services are provided under NABL Certificate CC-2480 in strict accordance with our officially approved scope of accreditation (ISO/IEC 17025:2017). Parameters falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.