In a yield monitoring combine harvester, clean grain mass flow is most commonly measured instantaneously using an:
Options:
(A) Impact plate sensor with load cell located at the top of the clean grain elevator
(B) Optical turbidity meter in the grain tank
(C) Rotameter in the fuel line
(D) Ultrasonic sensor on the cutter bar
Answer Key:
A
Step-by-Step Solution & Explanation
An impact plate yield sensor is mounted at the discharge head of the clean grain elevator. Clean grain thrown off the elevator paddles strikes the plate, and a strain gauge load cell measures the impact force, which is proportional to mass flow rate.