Overview
This microwave emits an average power density of less than 0.05 mW/ cm2. Therefore, there is no need for any warning signs, shielding or protection and it is regarded as totally safe. The microwave energy can pass through any non-conductive material such as plastics, ceramics, rock, rubber or glass, etc. A pulse of microwave energy emits from the transmitter at the speed of light and is detected by the receiver. The receiver can distinguish the difference between the microwave signal and noise. A potentiometer adjusts the sensitivity on the receiver so that the relay can switch at an approximate amount of obstruction. By adjusting this potentiometer you can compensate for a certain amount of material build-up on the side of the vessel. Time delays are incorporated to allow delay of relay action, both energize and de-energize.