JOHNE'S DISEASE. BVD (Bovine Virus Diarrhea) infection can cause numerous problems, such as damage to the digestive and immune systems, pneumonia, abortions, calf deformities, and others. Clinical signs in newborn calves infected with BVD include fever, nasal discharge, diarrhea, and inability to move about normally.
Ultrasonic Flow meter is a device used to measure the velocity of the fluid with the help of ultrasound transducers to compute volume flow of the fluid. This flow meter measures average velocity of the fluid with the use of sound waves. Working Principle of Ultrasonic Flow Meters-.
Quick Answer. Ultrasonic sensors work by transmitting energy in the form of ultrasonic waves to a target object, which reflects the waves back to the sensing head. Ultrasonic sensors are largely used in measuring distances based on the time it takes for the wave transmission and reception to be completed. Continue Reading.