Quick Answer
Prism Calibration Centre (NABL CC-2480) is Ahmedabad's premier flow meter calibration lab, accredited to calibrate electromagnetic, ultrasonic, vortex, rotameter, turbine, and Coriolis flow meters per ISO/IEC 17025:2017.
Key Takeaways
- NABL-accredited flow meter calibration covering liquid, gas, and steam flow measurement.
- Flow range: 0.5 L/hr to 1000 m³/hr; supports water, acids, alkalis, and hydrocarbons.
- Calibration per ISO 4064, OIML R 49, and manufacturer specifications.
- On-site flow calibration available using portable clamp-on ultrasonic calibrators.
- Certificate valid for energy audits (BEE), CGPDTM, and export compliance.
Flow Meter Types We Calibrate in Ahmedabad
Electromagnetic Flow Meters
Calibrated using volumetric tank standard or master electromagnetic meter. Range: 0.5–5000 mm pipe diameter.
Ultrasonic Flow Meters
Clamp-on and inline types. Calibrated using volumetric standard or master ultrasonic meter.
Vortex Flow Meters
Calibrated for steam, gas, and liquid service using calibrated reference flow meter.
Rotameters (Variable Area)
Calibrated using gravimetric or volumetric standards for water and air service.
Turbine Flow Meters
Calibrated using volumetric tank or master meter comparison method.
Mass Flow Meters (Coriolis)
Calibrated using gravimetric (weighing) method for high-accuracy mass flow measurement.
Why Flow Meter Calibration Matters for Ahmedabad Industries
A 2% error in a flow meter measuring 1 lakh litres/day of raw material translates to 2,000 litres per day of material loss or over-purchase — crores of rupees annually. For chemical and pharmaceutical manufacturers in Ahmedabad's Vatva and Odhav zones, flow meter accuracy directly impacts process yield, batch quality, and profitability.
Regulatory Requirements
BEE (Bureau of Energy Efficiency) energy audits, CGPDTM type approval, and ISO 50001 energy management systems all require NABL-certified flow meter calibration.
Flow Meter Calibration Procedure at Prism
- 1.Visual inspection and pre-calibration check of flow meter condition
- 2.Clean the flow meter and ensure no air bubbles or contamination in test fluid
- 3.Connect to NABL-calibrated reference standard (volumetric tank or master meter)
- 4.Run at 5 flow points: 10%, 25%, 50%, 75%, 100% of rated capacity
- 5.Calculate error at each point and expanded uncertainty (k=2)
- 6.Issue NABL certificate with as-found data, adjustment details, and traceability
Industries Requiring Flow Meter Calibration in Ahmedabad
- Chemical plants (Vatva, Naroda, Odhav) — acid, solvent, water flow
- Pharma (water for injection, purified water — USP/BP compliance)
- Water treatment plants (AMC / GWSSB — bulk water metering)
- Food & beverage (FSSAI — liquid ingredients flow)
- Textile mills (effluent water metering for GPCB compliance)
- ETP/STP plants (Gujarat PCB compliance monitoring)
Frequently Asked Questions
Which flow meters can Prism calibrate in Ahmedabad?
Prism calibrates all major flow meter types: electromagnetic, ultrasonic (clamp-on and inline), vortex, turbine, rotameter, Coriolis mass flow meters, and orifice plate assemblies.
What fluid is used for flow meter calibration at Prism?
Prism uses clean water (at 20°C) as the standard test fluid for liquid flow meters. Air is used for gas flow meters. Hydrocarbon fluid calibration is available on request.
Is on-site flow meter calibration possible?
Yes. For large inline flow meters that cannot be removed, Prism offers on-site calibration using portable clamp-on ultrasonic reference meters and mobile calibration kits.
How often should industrial flow meters be calibrated?
Annual calibration is standard. Flow meters in critical applications (boiler feedwater, pharma WFI, custody transfer) should be calibrated every 6 months.
Does Prism calibrate natural gas flow meters?
Yes. Prism calibrates rotary gas meters, turbine gas meters, and diaphragm meters used for natural gas (CNG, PNG) metering.
Written by
Er. Parthiv Kinariwala
Managing Director · Prism Calibration Centre · NABL CC-2480 · Ahmedabad
Er. Parthiv Kinariwala founded Prism Calibration Centre in 2004 and has over 20 years of hands-on experience in calibration engineering, NABL accreditation, and industrial compliance. His team performs 10,000+ calibrations annually from the Vatva GIDC laboratory, serving 5000+ industries across Gujarat.
Prism Calibration Centre — Vatva GIDC, Ahmedabad
Prism Calibration Centre
F-101, Rudraksh Complex 2, Phase 3, GIDC Vatva, Near Jasoda Nagar Cross Road, Ahmedabad — 382445, Gujarat, India
Phone: +91 98245 26444
Email: info@prismcalibration.com
NABL: CC-2480 · ISO/IEC 17025:2017
Hours: Mon–Sat, 9:00 AM – 7:00 PM