Cable-guided Radar Level Meter: Precise Level Measurement

The cable-type guided wave radar level meter is a measurement instrument based on the time domain reflection principle. The guided wave radar working principle is that electromagnetic pulses travel at the speed of light along a steel cable or probe. When these pulses encounter the surface of the measured medium, they generate reflected waves that return along the same path to the transmitting system. By calculating the time taken for the pulse to travel, the height of the liquid level can be accurately determined.

Before using the cable-type guided wave radar level meter for measurements, it is essential to understand its measurement principles. The output signal is set based on the input parameters such as the empty tank height, full tank height, and other application parameters, allowing the instrument to adapt to different measurement environments and generate a corresponding 4-20mA output signal.

The cable-type guided wave radar level meter has the following notable features:

1.It can measure various substances with a dielectric constant greater than or equal to 1.4.

2.It is suitable for measuring substances with a viscosity not exceeding 500 cSt and that are not prone to adhesion.

3.The measurement range of the cable-guided radar can reach up to 30 meters, while the measurement range of the Rod-type guided wave radar can reach up to 6 meters.

4.It has good control over steam and foam, ensuring that measurements are not affected.

5.For liquid materials with a lower dielectric constant, a dual-probe measurement method can be employed to ensure high accuracy.

To fully utilize the performance of the cable-type guided wave radar level meter, choosing the appropriate installation location is crucial. It is recommended to avoid placing it near feed and discharge points. For metal and plastic containers, ensure that there are no obstructions within the entire measurement range. It is typically advised to install it at a quarter of the hopper diameter; the distance between the cable or rod probe and the tank wall should be at least 30 centimeters; the bottom of the probe should be approximately 30 mm above the tank bottom; maintain a certain distance between the probe and any obstacles inside the tank; if the bottom of the container is conical, the sensor can still be installed.