In year of 1996, we produced first generation: area velocity sensor called QSD6526 sensor .
It works on ultrasonic doppler principle, it can measure flow rate by ultrasonic sensor and liquid level by pressure sensor ;
It is glued structures ;
Flow velocity : 21mm/s to 4500 mm/s ;
Depth range: 0 to 2m and 0 to 5m .
Accuracy : 2%
In 2014, the second generation of area velocity sensor : QSD6527 sensor is produced .
We changed liquid mesurement method by ultrasonic sensor instead of pressure sensor;
It adopts Epoxy integral potting technology;
Bidirectional measurement ability .
In 2018, the third generation of area velocity sensor : QSD6537 sensor had been released .
Increase the conductivity function, pressure and ultrasonic sensor two ways to measure the liquid level, increase the temperature compensation, pressure compensation, analog signal measurement to digital signal measurement, accuracy increased to 1% ;
Flow rate range :20mm/s to 12m/s ;
Liquid level range :20mm to 5m ultrasonic; 0mm to 10m pressure ;
You can measure relatively pure liquids ;
Sensor with added modbus RTU output ;
A major technological breakthrough was achieved .
Post time: Nov-28-2022