National Measurement Institute (NMI)

Site

Flow Standards Project

Accreditation No.

1

Site No.

25590

Date of Accreditation

01 Jul 2023

Address

36 Bradfield Road
Lindfield West, NSW 2070
Australia

measurement.gov.au

Contact

Ms Charmaine Kwan P: +61 (02) 84673836

Availability

Services conditionally available to external clients

National Measurement Institute (NMI) address map

Scope of Accreditation

Print scopes
Flow Standards Project

ISO/IEC 17025 (2017)

Calibration

Service Product Determinant Technique Procedure Limitations
Flow metrology - Flow measuring devices and systems Gas meters Flow rate; Volume (and nominal flow rate) Direct comparison against a reference standard

Capability

Calibration by comparison with PVTt standard
With a Calibration and Measurement capability of -
0.1% of flow rate from 0.00006 m3/hr to 100 m3/hr using air, nitrogen, argon, carbon dioxide, helium or oxygen at pressures up to 700 kPa (flowrate normalised to 101.325 kPa and 20°C)
Flow metrology - Flow measuring devices and systems Gas meters Flow rate; Volume (and nominal flow rate) Direct comparison against a reference standard

Capability

Calibration by comparison using Bell Prover
including but not limited to Rotary Meters; Turbine Meters; Heat Element Meters (Thermal Flowmeter and Mass Flow Controllers); Variable Area Flowmeter/Rotameters; Soap Film Meters; Wet Gas Meters; Differential Pressure Flowmeters (Orifice Plate/Nozzle and Laminar Flow Element); Ultrasonic Meters; Domestic Gas Meters; Piston Prover Meters; Critical Flow Venturi Nozzles (Sonic Nozzles)

With Calibration and Measurement Capability of -
0.1% of  flowrate normalised to 101.325 kPa and 20°C from 1.5 m³/h to 25 m³/h  using air, nitrogen, argon, carbon dioxide or helium at pressures up to 700 kPa
Flow metrology - Flow measuring devices and systems Gas meters Flow rate; Volume (and nominal flow rate) Direct measurement by critical flow venturi nozzle

Capability

Calibration by comparison with Sonic Nozzle Arrays
and including but not limited to Rotary Meters; Turbine Meters; Heat Element Meters (Thermal Flowmeter and Mass Flow Controllers); Variable Area Flowmeter/Rotameters; Soap Film Meters; Wet Gas Meters; Differential Pressure Flowmeters (Orifice Plate/Nozzle and Laminar Flow Element); Ultrasonic Meters; Domestic Gas Meters; Piston Prover Meters; Critical Flow Venturi Nozzle (Sonic Nozzles)

With Calibration and Measurement Capability of -
0.13% of flowrate normalised to 101.325 kPa and 20°C from 0.005 m³/h to 60 m³/h using air, nitrogen, argon, carbon dioxide, helium or oxygen at pressures up to 700 kPa (flowrate normalised to 101.325 kPa and 20°C)
0.13% of flowrate normalised to 101.325 kPa and 20°C from 60 m³/h to 480 m³/h using air at pressures up to 700 kPa (flowrate normalised to 101.325 kPa and 20°C)
0.17% of flowrate normalised to 101.325 kPa and 20°C from 480 m³/h to 7000 m³/h using air at atmospheric pressures (flowrate normalised to 101.325 kPa and 20°C)
Flow metrology - Flow measuring devices and systems Gas meters Flow rate; Volume (and nominal flow rate) Direct comparison against a reference standard

Capability

Calibration by comparison with Piston Prover
including but not limited to Rotary Meters; Turbine Meters; Heat Element Meters (Thermal Flowmeter and Mass Flow Controllers); Variable Area Flowmeter/Rotameters; Soap Film Meters; Wet Gas Meters; Differential Pressure Flowmeters (Orifice Plate/Nozzle and Laminar Flow Element); Ultrasonic Meters; Domestic Gas Meters; Piston Prover Meters; Critical Flow Venturi Nozzles (Sonic Nozzles)

With Calibration and Measurement Capability of -
0.1% of  flowrate normalised to 101.325 kPa and 20°C from 0.060x10-3 m³/h to 2 m³/h using air, nitrogen, argon, carbon dioxide, helium or oxygen at pressures up to 700 kPa (flowrate normalised to 101.325 kPa and 20°C)
Liquid Flow and High Gas Flow at Londonderry

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
Flow metrology - Flow measuring devices and systems High pressure gas meters Flow rate; Volume (and nominal flow rate) Gravimetric

Capability

With Calibration and Measurement Capability of -

0.1% of flow rate from 1 kg/min to 100 kg/min and from 10 000 kPa to 30 000 kPa (100 bar to 300 bar) (methane/natural gas)
Flow metrology - Flow measuring devices and systems Liquid meters Flow rate Direct comparison against a reference standard; Volumetric transfer

Capability

with Calibration and Measurement Capability of -
By comparison with a volumetric piston prover;
0.1% of flow rate from 4 L/min to 1700 L/min (Propane and Butane)
0.031% of flow rate from 5 L/min to 4100 L/min in synthetic Petrol and Diesel fluids
With a minimum of 5 passes of the piston prover
Flow metrology - Flow measuring devices and systems Liquid meters Flow rate Comparison with a reference meter; Volumetric transfer

Capability

With Calibration and Measurement Capability of-
0.12% of flow rate from 4 L/min to 1600 L/min (Propane and Butane)
0.05% of flow rate from 5 L/min to 4100 L/min in synthetic Petrol and Diesel fluids
Flow metrology - Flow measuring devices and systems Liquid meters Flow rate Gravimetric

Capability

With Calibration and Measurement Capability of -
0.042% of flow rate from 5 to 30 kg/min using fluids (for e.g. water, light oils, hydrocarbon liquids, high viscosity test fluids such as silicone based liquids) from 700 to 1000 kg/m3
With a minimum batch size of 30 kg
Onsite calibration
With Calibration and Measurement Capability of -
0.2% of flow rate from 50 to 160 kg/min using Anhydrous Ammonia
Volume and density - Industrial volumetric equipment and bulk storage Industrial volumetric proving measures; Standard measures - > 25 L Volume Gravimetric

Capability

Including calibrations performed at Lindfield
With Calibration and Measurement Capability of -
0.01% from 1 L to 6000 L

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