Magnetic Flow Meters
QTRD91 non-contact radar level meter principle
Ultrasonic Level Meters
Sonic nozzle calibration equipment
Sonic nozzle calibration equipment is advanced equipment for air flow meter calibration.
Such as vortex flow meter, thermal mass flow meter, gas turbine flow meter and so on.
It's working based on negative pressure calirbation.
The pump will pump air into the tube and calculate the volume with temperature and pressure compensation.
In my company we have DN25-DN200 sonic nozzle calibration equipment.
So the vortex flow meter and thermal mass flow meter's accuracy and stability could be guaranteed.