NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for digital and analogue ammeters, CT assemblies, and 4–20 mA current meters. 1 µA to 3000 A. IEC 61010 and IEC 60051. All makes.
±0.01%
Accuracy
1 µA–3000 A
Range
IEC 61010
Standard
IEC 61010 / IEC 60051
Current Measuring Instruments
NABL Accredited
CC-2480
— WHAT IS AMMETER CALIBRATION —
Think of a quality lab that relies on an ammeter 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.
Ammeter 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 —
Digital / Analogue Panel / CT Assembly / Shunt / mA Meter · All Makes · IEC 61010 · NABL accredited
Analog moving-iron and moving-coil ammeters for AC/DC current measurement.
Digital ammeters with LCD/LED display for precise current readings.
Panel-mounted ammeters for switchboards and distribution boards.
Sensitive instruments measuring microampere and milliampere ranges.
DC clamp and inline ammeters for battery and solar systems.
High-range ammeters for industrial motors and power lines.
— OUR PROCESS —
Ammeter received. Current range, input type (direct or CT secondary), and AC/DC function documented.
NABL-traceable precision current source connected. For CT assemblies, primary current injector set up per IEC 61869.
Current calibrated at 5 points spanning the full range: 10%, 25%, 50%, 75%, 100% of rated current. DC and AC calibrated separately.
For CT assemblies: primary current vs secondary reading ratio verified. Ratio error and phase displacement documented per IEC 61869.
Error at each calibration point. Expanded uncertainty (k=2) per GUM. Results compared to manufacturer specification.
NABL CC-2480 certificate with current data, deviations, uncertainty (k=2), IEC 61010 / IEC 60051 traceability.
— STANDARDS & COMPLIANCE —
IEC 61010-1
Safety for Measuring Instruments
IEC 60051
Analogue Indicating Instruments
IEC 61869
Instrument Transformers (CT)
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Ammeter 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 —
1-day turnaround. Courier pick-up and delivery across Gujarat.
Why Choose Prism
Since 2004, every NABL ammeter certificate from Prism has been accepted by ISO 9001, pharma, and industry audit bodies — no rejections.
— FAQ —
Get In Touch
Share the make/model, current 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.