Magnetic Flow Meters
QTRD91 non-contact radar level meter principle
Ultrasonic Level Meters
Thermal mass flow meter could be used to measure kinds of air and gas.
Normally, the accuracy is 1% for insertion type and flange type.
It have LCD display, 4-20mA, pulse and RS485 communication.
For large diameter, we suggest to use insertion type thermal mass flow meter.
It also have good performance to measure low flow rate.
The mesaure range could be 0-100Nm3/h.