Guide Wave Radar Level Meter - Reflected pulse signal along the cable or rod probe type transmit to the instrument electronic circuit parts, the microprocessor processes the signal, identify the microwave pulse echo generated in the material surface. Correct identification of the echo signal are completed the implementation by the pulse software pulse travel time T is proportional: D=C×T/2. Where C is the speed of light. Because the empty distance E is known, the level L is: L=E-D. By entering the empty height of E (= zero), full tank height F (= hundred) and the application to set some parameters, application parameters will automatically adapt the instrument to measure the environment, corresponding to the 4-20mA output. D the distance from the material surface and the