NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for RTD calibrators, decade resistance boxes, and PT100/PT1000 simulators. 4-terminal Kelvin bridge method per IEC 60751.
±0.05 Ω
Accuracy
0.1 Ω – 10 kΩ
Range
IEC 60751
Standard
IEC 60751
Platinum RTD Standard
NABL Accredited
CC-2480
— WHAT IS RTD CALIBRATOR CALIBRATION —
Think of a quality lab that relies on a rtd calibrator 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.
RTD Calibrator 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 —
Decade Box / Simulator / Reference Resistor · All Makes · IEC 60751 · NABL accredited
Portable RTD calibrators for field calibration of RTD sensors and transmitters.
Thermocouple calibrators for sourcing and measuring TC signals in the field.
HART temperature calibrators for configuring and calibrating HART transmitters.
SPRT/PRT reference thermometers for primary and secondary temperature reference.
Handheld temperature calibrators combining TC/RTD source and measure functions.
Combined temperature source and measure calibrators for complete temperature calibration.
— OUR PROCESS —
RTD calibrator/decade box received. Output resistance range, excitation current, and interface type documented.
Calibrated 4-terminal resistance standard connected. Calibrator output measured via precision Kelvin-type resistance bridge.
Calibrator set to 5 resistance values spanning its range (representing -200°C, 0°C, 100°C, 200°C, 600°C for PT100). Deviation at each point measured.
Linearity and resolution of decade resistance box or simulator verified. Smallest step resolution documented.
Expanded uncertainty (k=2) calculated per GUM framework. Temperature-equivalent uncertainty in °C provided for PT100 interpretation.
NABL CC-2480 certificate with resistance values, deviations, temperature equivalents, uncertainty (k=2), IEC 60751 traceability.
— STANDARDS & COMPLIANCE —
IEC 60751
Platinum Resistance Thermometers
ITS-90
International Temperature Scale
BIPM / NPL
Primary Resistance Traceability
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. RTD calibrator and resistance standard certificates accepted by NABL-accredited labs, pharma validation bodies, ISO 9001, and all 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 —
In-lab calibration of RTD calibrators and decade boxes with NABL-traceable reference standards.
Why Choose Prism
Since 2004, every NABL resistance calibration certificate from Prism has been accepted by NABL labs, pharma validation bodies, and QMS auditors — no rejections.
— FAQ —
Get In Touch
Tell us the make/model, resistance range, and quantity. We respond within 2 business hours.
— FROM OUR BLOG —
Temperature data loggers are the backbone of cold chain monitoring and stability chamber validation. NABL-certified calibration ensures their temperature records are accurate and defensible in regulatory audits.
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Thermocouples are the most widely used temperature sensors in industrial furnaces, kilns, and process plants. Proper NABL calibration ensures accuracy across the full temperature range.
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Temperature is the most measured parameter in Gujarat's industries. Prism's NABL-accredited temperature calibration laboratory in Ahmedabad covers -200°C to +1600°C with highest accuracy.
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.