NABL Accredited · CC-2480 · Est. 2004 · Gujarat's Trusted Calibration Lab
NABL-accredited calibration for Magnehelic DP, Low Range, High Range, Inclined-Vertical, Digital, and Filter DP Gauges. ISO 5171 / ASHRAE 52.2 traceable. Accepted by ISO 9001, GMP, ISO 14644 auditors.
±0.5% FS
Accuracy
0–50 kPa
Range
ISO 5171
Standard
ISO 5171
Magnehelic DP Standard
NABL Accredited
CC-2480
— WHAT IS MAGNEHELIC GAUGE CALIBRATION —
Think of a quality lab that relies on a magnehelic gauge 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.
Magnehelic Gauge 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 —
All 6 types · Dwyer and all makes · 0–50 kPa · NABL accredited
Dwyer Magnehelic differential pressure gauges for HVAC and cleanroom applications.
Low-range Magnehelic gauges for very low DP measurement from 0–1 in WC.
High-range Magnehelic gauges for higher differential pressure applications.
Inclined-vertical manometers for low-pressure measurement with dual scale.
Digital Magnehelic indicators with electronic display and output options.
Filter differential pressure indicators for air filter monitoring and replacement alerts.
— OUR PROCESS —
Magnehelic gauge received, tagged. Range, make (Dwyer/equivalent), and mounting noted. Physical condition documented.
Traceable low-pressure reference applies 0%, 25%, 50%, 75%, 100% FS to high port, low port vented to atmosphere. As-found readings recorded.
Zero set with both ports equalized at atmosphere. Pointer/display aligned. Zero drift noted.
Ascending and descending 5-point readings. Linearity error and hysteresis calculated per ISO 5171.
Post-adjustment readings at 5 points confirm compliance. Expanded uncertainty (k=2) calculated. Pass/fail recorded.
NABL CC-2480 certificate with as-found/as-left data, uncertainty, ISO 5171 / ASHRAE 52.2 traceability.
— STANDARDS & COMPLIANCE —
ISO 5171
Pressure Gauges (General)
ASME B40.100
Pressure Gauges & Diaphragm Seals
ASHRAE 52.2
HVAC Filter Test Standard
ISO/IEC 17025
NABL Accreditation Standard
Prism holds NABL CC-2480 under ISO/IEC 17025:2017. Magnehelic gauge certificates accepted by ISO 9001, IATF 16949, GMP/FDA, ISO 14644 cleanroom, IBR, and PESO auditors.
— NON-NABL CALIBRATION —
Routine maintenance calibration without NABL certification — same engineers, same low-pressure reference, lower cost.
All calibrations traceable to NPL via low-pressure reference — only certificate type differs.
Non-NABL Magnehelic jobs faster — ideal for large HVAC batch calibrations.
Lower cost than NABL — right for utility Magnehelic gauges and non-critical HVAC.
Portable low-pressure reference to your plant — same team, same quality across Gujarat.
— AREAS WE SERVICE —
Onsite Magnehelic gauge calibration across Gujarat with portable low-pressure references.
Why Choose Prism
Since 2004, every NABL Magnehelic certificate issued by Prism has been accepted by ISO, IATF, GMP, ISO 14644, IBR, PESO, and GPCB auditors — no rejections.
— FAQ —
Get In Touch
Tell us the gauge type, range, quantity, and make. We respond within 2 business hours.
— FROM OUR BLOG —
Differential pressure transmitters are the most versatile industrial transmitter, used for flow, level, filter DP, and density measurement. NABL calibration ensures accurate DP measurements.
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Pressure gauges are the most widely used instruments in Gujarat's industrial plants. Correct calibration per ASME B40.100 and JCSS standards ensures safety and compliance.
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Pressure transmitters are the most common industrial measurement device. Proper NABL-accredited calibration ensures accuracy, prevents process failures, and meets compliance requirements.
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 or onsite conditions falling outside our active NABL scope are processed with standard metrological traceability to NPL/BIPM national standards.