STRUCTURE AND MEASUREMENT PRINCIPLE
Guided wave radar is a measuring instrument based on the principle of time travel. Radar waves travel at the speed of light, and the travel time can be converted into level signals through electronic components. The probe emits high-frequency pulses and conducts them along the cable or pole probe. When the pulse encounters the surface of the material, it is reflected back and received by the receiver inside the instrument, which converts the distance signal into a level signal. The reflected pulse signal is transmitted along the cable to the electronic circuit of the instrument, and the microprocessor processes this signal to identify the echo generated by the microwave pulse on the surface of the material. The correct recognition of the echo signal is completed by intelligent software, and the distance D from the material surface is proportional to the time travel T of the pulse: D=C × T/2, where C is the speed of light
Since the distance E of the empty tank is known, the level L is: L=E-D
INPUT
By inputting the empty tank height E (=zero), full tank height F (=full range), and some application parameters to set, the application parameters will automatically adapt the instrument to the measurement environment. Corresponding to 4-20mA output.
MEASURING RANGE
F - Measurement Range
E - Empty tank distance RBRD51
B - Top blind spot
K - Min distance from probe to tank wall
The top blind spot refers to the distance between the high surface of the material and the measurement reference point. The bottom blind spot refers to a distance near the bottom of the cable that cannot be measured. The effective measurement distance is between the top blind spot and the bottom blind spot.
Attention: Only when the material is located between the top blind spot and the bottom blind spot can reliable measurement of the tank level be ensured.
English 
简体中文