Fluid Flow
CALIBRATION FACILITY
MSIR INDIA’s Flow Metrology Laboratory features high-accuracy gravimetric water flow calibration rigs and sonic critical flow Venturi nozzle banks for gas meters. Employing the flying-start-flying-finish gravimetric method with high-speed diverters and master Coriolis mass flowmeters, we calibrate electromagnetic, Coriolis, turbine, ultrasonic, and vortex flowmeters.
LIQUID FLOW RATE
0.01 to 250 m³/h
Closed Water Loop
GAS FLOW RATE
0.001 to 100 Nm³/h
Sonic Critical Nozzles
PROVER ACCURACY
± 0.15 % (Liquid)
Primary Gravimetric
PIPE DIAMETERS
DN15 to DN200
Flanged & Wafer
Gravimetric Flow Rig Fluid Velocity & Coriolis Phase Simulator
MEASURED TELEMETRY
45.12
EXPANDED UNCERTAINTY (k=2)
±0.15%
TRACEABILITY
NPL India
PARAMETER TUNING
Evaluated as per GUM (JCGM 100:2008) guidelines with complete Type A and Type B expanded uncertainty analysis.
Primary Reference Standards
Our fluid flow capabilities are anchored by primary standards directly calibrated by NPL India and BIPM-recognized National Metrology Institutes.
Flying-Start Gravimetric Proving Rig
Primary Flying-Start Weighing Tank Rig
High-speed pneumatic diverter with microsecond optical timer synchronization and high-precision load cell weighing tanks.
Technical Highlights:
Micro Motion Elite Coriolis Master Bank
Dual-Tube Master Coriolis Mass Flowmeters
Direct mass flow measurement independent of fluid viscosity, density, and velocity profile distortions.
Technical Highlights:
Fluid Flow Scope Matrix (CMC)
Calibration & Measurement Capabilities (CMC) accredited under ISO/IEC 17025:2017. Uncertainties expressed at an expanded confidence level of approx. 95.45% (k=2).
| Discipline / Measurand | Calibration Range | Test Condition | Expanded CMC (±) | Master Reference Standard | Test Standard / Method |
|---|---|---|---|---|---|
| Electromagnetic, Coriolis & Turbine Flowmeters | 0.1 m³/h to 250 m³/h (DN15 to DN200) | Water at Ambient Temperature | ± 0.15 % of reading | Gravimetric Weighing Tank Rig + Diverter | Flying start-stop gravimetric method (ISO 4185) |
| Thermal Mass Flow Meters & Gas Rotameters | 0.005 Nm³/h to 80 Nm³/h | Dry Compressed Air / Nitrogen | ± 0.25 % of reading | Sonic Venturi Nozzle Master Bank | Critical flow Venturi nozzle proving (ISO 9300) |
Instruments Serviced & Calibrated
We calibrate all major industrial, pharmaceutical, aerospace, and research-grade instrumentation.
Electromagnetic Flowmeters
Flanged and wafer magnetic flowmeters
Coriolis Mass Flowmeters
High-accuracy liquid mass and density transmitters
Turbine & Ultrasonic Flowmeters
In-line and clamp-on acoustic transit time meters
Rotameters (Variable Area)
Glass and metal tube rotameters with needle valves
Climate & Environment
Designed for Zero Drift
Every measurement at MSIR INDIA is conducted under strictly monitored and auditable environmental controls adhering to ISO/IEC 17025:2017:
UNBROKEN CHAIN OF TRACEABILITY (ISO/IEC 17025)
BIPM SI Units Mass (kg), Time (s), and Volume (m³)
NPL India Mass & Volume Standards
MSIR Primary Gravimetric Rig & Coriolis Master Standards (NABL CC-2891)
Client Industrial Water, Fuel, Chemical, and Gas Flowmeters
Book Fluid Flow Calibration
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INDICATIVE CALIBRATION FEE
₹ 3,000 + GST
Explore All 12 Metrology Laboratories
MSIR INDIA operates 12 specialized NABL-accredited metrology domains in Chennai.