Magnetic Flow Meters
QTRD91 non-contact radar level meter principle
Ultrasonic Level Meters
Thermal mass flow meter is one type of flow meter for air and gas measuring.
It have high accuracy and easy to be installed.
My company could produce this type thermal mass flow meter with remote display.
The length for cable could be 5m.
It's a convenient design for those customers who want to wathc the diplay in a reasonable distance, not only on pipe.