DN50-DN300 Sonic nozzle gas flow meter calibratin equipment production

DN50-DN300 Sonic Nozzle Gas Flow Calibration Equipment‌ combines aerospace-grade engineering

with ISO 9300-compliant critical flow technology, designed to produce and validate high-accuracy sonic nozzles for gas flow meter calibration.

Utilizing CNC-machined stainless steel or hardened alloy nozzles, each unit guarantees repeatable critical flow rates (0.5–3000 m³/h) with ±0.25% uncertainty,

The production process integrate real-world pressure-temperature compensation

(0.1–10 MPa) to ensure nozzle throat geometry adheres to OIML R137 specifications.

Automated robotic welding and laser-etched calibration data ensure durability and traceability for harsh industrial environments,

including natural gas, petrochemical, and emission monitoring systems.