PLL11000A1BZ RF admittance level gauge

PLL11000A1BZ RF admittance level gauge

Measurement principle:

Radio frequency admittance is a new level control technology developed from capacitive technology, which is anti hanging, more reliable, accurate, and widely applicable. It is an upgrade of capacitive level technology. The so-called radio frequency admittance refers to the reciprocal of impedance in electricity, which is composed of resistive, capacitive, and inductive components. Radio frequency is the spectrum of high-frequency radio waves, so radio frequency admittance can be understood as measuring admittance using high-frequency radio waves. When the instrument is working, the sensor of the instrument forms an admittance value with the wall and the measured medium. When the level changes, the admittance value changes accordingly. The circuit unit converts the measured admittance value into a level signal output to achieve level measurement.

For continuous measurement, the difference between radio frequency admittance technology and traditional capacitance technology is not only mentioned above, but also includes two important circuits, which are improved based on an important discovery in conductive hanging practice. The above technology also solves the problem of connecting cables and the issue of hanging materials at the root of vertically installed sensors at this time. The two added circuits are oscillator buffer and AC converter chopper driver.

Features:

1. Strong universality: suitable for various occasions, can detect particles, fly ash, conductive and non-conductive liquids, viscous materials;

2. Anti adhesion circuit: Anti adhesion circuit design can eliminate false error signals caused by material adhesion;

3. Power loss protection mode: low or high fault alarm. On site adjustable.

4. Easy to install and adjust

5. Not afraid of sticking or hanging materials

6. Good stability, not affected by temperature

7. Delay output adjustable

8. Optional temperature resistance * up to 550 ℃

9. High and low position failure protection function

Technical Specifications:

1. Power supply voltage: 220CAC ± 15% 50Hz; 24VDC ± 5%;

2. Power consumption: 4W;

3. Output signal: Relay output double pole double throw (DP/DT); 5 amps (resistive), 220VAC;

4. Environmental temperature: -40~70 ℃;

5. Sensitivity setting: 0.5-500pF (adjustable);

6. Delay time: adjustable from 0 to 30 seconds (on or off);

7. Power loss protection mode: low or high fault alarm, adjustable on site.

8. Installation form: ⑴ Flange installation: According to the flange standard provided by the user;

PLL11000A1BZ RF admittance level gauge

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