Optical flow rate measurement using unsteady pressures
Optical flow sensor
Optical flow-meter device
Optical micropressure transducer
Optical pickup and signal analyzing system for mass flowmeters
Optimized convection based mass airflow sensor
Opto-electronic position sensing
Orbital ball flow detection apparatus
Orbital-ball flow sensors
Orbital-element flow sensors
Orifice fitting for a gas pressure differential-measuring system
Orifice measuring device
Orifice member, and differential-pressure flow meter and...
Orifice meter having tampering indicator
Orifice meter with isolation valve on the carrier
Orifice meter with isolation valve on the carrier
Orifice meter with pressure venting and equalizing safety device
Orifice meter with replacable orifice disc
Orifice meter with rotatable isolation sealing member
Orifice plate assembly