Description
The wastewater discharge meter is measured by an ultrasonic sensor emitting an ultrasonic pulse to the water surface from the ultrasonic sensor to the receiving is proportional to the distance of the sensor to the surface of the measured object; the meter detects the time, calculates the sound speed of the current temperature (the sensor measurement), and further calculates the liquid level value. The empty underwater distance W at the liquid level surface is proportional to the travel time T of the acoustic wave: W = VT / 2 (where V is the speed of the acoustic wave in water). The user sets the height of the probe to the bottom of the groove H, the instrument automatically converthe pulse travel time T to the corresponding spatial distance value W, and then calculates the difference between H minus W is the measured value L, According to the liquid level height, the instantaneous flow and the cumulative flow are calculated.