HCDAR-61 high-frequency corrosive radar level gauge

High frequency corrosive radar level gauge

HCDAR-6X electromagnetic waves propagate in space at the speed of light, and when they encounter the surface of the measured medium, some of their energy is reflected back and received by the same antenna. Calculate the distance from the antenna to the surface of the measured medium based on the time interval between two pulses.

Application: Various corrosive liquids

Measurement range: 0-20m

Connection process: thread/flange

Medium temperature: (-40~120) ℃

Process pressure: (-0.1~0.3) MPa

Accuracy: ± 5mm

Output signal: (4-20) mA HART/RS485 MODBUS

Explosion proof rating: Ex ia IIC T1-T6 Ga/Ex d IIC T6 Gb

Protection level: IP68

Product characteristics of high-frequency corrosive radar level gauge

1. Small beam angle, concentrated energy, stronger anti-interference ability, greatly improving measurement accuracy and reliability.

2. The antenna size is small and easy to install.

3. The measurement blind spot is smaller, and the measurement effect for small cans is also very good.

4. Shorter wavelength, more suitable for level measurement of small particle materials.

5. Non contact measurement, no wear, no pollution.

6. The output signal can be selected in a two-wire system (4-20) mA@HART And the four wire system RS485@MODBUS Protocol, four wire power supply as low as 12VDC.

Product Principle

The antenna system emits and receives very short, low-energy microwave pulses. Radar waves propagate at the speed of light. The running time can be converted into a level signal through electronic components. A special time extension method can ensure stable and accurate measurements in a very short amount of time. Even if there are false echoes in complex working conditions, the latest microprocessing technology and debugging software can be used to accurately analyze the echoes of material positions.

input

The antenna receives reflected microwave pulses and sends them to the electronic circuit. The microprocessor processes signals and identifies echoes generated by micro pulses on the surface of the material.

Accurate recognition of echo signals can be achieved with millimeter level precision through intelligent software. The distance D from the material surface is proportional to the time interval of the pulse:D=C*T/2Among them, C is the speed of light, because the distance E of the empty can,So, the material/liquid level position L is:L=E-D

output

By inputting the empty tank height E (=zero), full tank height F (=full range), and some application parameter settings, the instrument is automatically adapted to the measurement environment.

Corresponding to 4-20mA output.

Selection and Application

Installation requirements

The recommended distance between the wall and the installation of short pipe exterior walls is (1).

The minimum distance from the pipe wall to the tank is 1/6 of the tank diameter, with a minimum of 400mm.

Cannot be installed above the feed inlet, cannot be installed in the center position.

Application Cases

The HCDAR-61 antenna is made of all PVDF material and is suitable for measuring various highly corrosive liquids. Can prevent slight condensation.