Accredited Orifice Flowmeter Calibration Services

Accurate, NIST‑Traceable Calibration for Orifice Flow Measurement Systems

ISO‑accredited calibration for orifice plates, nozzles, venturis, and differential pressure transmitters.

ISO/IEC 17025–accredited calibration for differential‑pressure and flow systems

SI‑traceable measurement chains supported through NIST

Calibration aligned to plate size, beta ratio, and Reynolds‑number requirements

Digital as‑found/as‑left reporting for audit readiness

Full DP Measurement Chain Evaluation

Nationwide In‑Lab & On‑Site Service

Up to 400 GPM traceable flow standards

4,000+ flow devices calibrated annually

Precision Orifice Flow Capabilities For Maximum Accuracy

Transcat’s orifice meter calibration uses advanced primary standards and precision differential‑pressure instrumentation to deliver uncertainties as low as ±0.05% (k=2). Our flow benches support typical line sizes up to ~2 inches and flow rates from 0.01 to 400 GPM, ensuring full traceability and compliance to ISO, AGA, and ASME standards.

Brands We Calibrate

Transcat calibrates orifice and DP flow equipment from leading manufacturers, including Rosemount, Yokogawa, ABB, WIKA and more.

Don’t see your brand of flow meter listed here? Skip the search. Request a quote and we'll take it from there – verifying the brand, type and capability we can offer.

Why We Calibrate Orifice Flowmeters

Because orifice meters derive flow from differential pressure, accuracy can drift due to:

Plate edge wear or deposits

Erosion or corrosion

Pressure sensor drift

Flow profile changes caused by piping disturbances

See the full list of flow meters we calibrate here ❯

Our Expertise in Orifice Flow Calibration

Transcat’s flow specialists evaluate the entire DP measurement chain, ensuring each component functions harmoniously to produce accurate flow data. We combine mechanical inspection of primary elements with advanced DP transmitter calibration, compensation parameter verification, and system performance analysis.

Using certified reference standards, ISO‑accredited procedures, and highly trained technicians, Transcat delivers the accuracy, repeatability, and documentation needed for audit‑ready confidence in your orifice flow measurements.