hot sale smart RF admittance material level meter A64L

Overview and Application
The RF Admittance level transmitter is composed of two parts: detection and
transmitting. The detection part is composed of probe, protective casing and
sensor, and the transmitting part is composed of oscillator, demodulator, amplifier,
voltage and current conversion, dial gauge and
outer casing.

The oscillator generates 100KHz radio-frequency voltage, which will be applied
on an electrical bridge composed of inductor and capacitance, and used to
compensate the distributed capacitance on coaxial-cable. The capacitance
would be measured formed by the sensor and the material.

On the initial stage, change the variable capacitance to balance the electric bridge,
then the voltage transmitted to demodulator will be zero. When the level rises, the
capacity will increase and the electrical bridge will lose balance, then the voltage transmitted to the demodulator will not be zero, which will be in direct proportion to unbalancedness of electrical bridge. The different levels will give rise to signal
variations. After processing of demodulator and amplifier, it will be changed to
4~20mA linear current to the measured level. When transmitted to control room for centralized control and record, we would achieve the automatic control of production process.

Features
1. The most versatile level technology for liquids, slurries, interface and 
     granules measurement.
2. Two-wire, 4-20mA loop transmitter.
3. Low cost of ownership, no maintenance, and no moving parts to wear out.
4. Stable, repeatable and accurate measurement within 0.5% of range.
5. Built-in isolation and surge protection for increased reliability.
6. Integral and remote installation up to 50m.

Technical Parameters
1. Installation method:
     a. Thread: thread integrated installation, thread split installation; 
     b. Flange: flange integrated installation, flange split installation
2. Range of measurement: H (m) (0.05~30m available)
3. Working pressure (MPa): 1.6,2.5,4.0,6.3,16.0,32.0
4. Connection method: thread standard: 11/2 NPT M39×2 (thread can be
    provided according to requirements of customers)
5. Wetted material: probe 316L, 1Cr18Ni9Ti
6. Threaded flange: 316, 1Cr18Ni9Ti
7. Operating temperature: 80~+350 degree
8. Accuracy: ±0.5%
9. Input voltage: rated voltage 24VDC min 11.5VDC and max 36VDC;
10. Output signal: 4~20mA two-wire
11. Load resistance: rated load resistance 250Ω
12. Ambient temperature: -40~+75 degree
13. Electrical interface: M20X1.5 internal thread;
14. Relative humidity:≤85%;
15. Explosion-proof sign: explosion-proof type

Model Selection
Length: The A, B, M, N, P electrodes are specified by customer, the longest
of which is 4175mm. The longest for D, H, I electrode is 30 meters. Electrode option
A, D, E electrode can be only used for non-conducting media.When used for fiber
glass or container with lining, we shall use auxiliary earthed pole or coaxial sleeve.

This level transmitter can be widely used for continuous measurement of liquid
level and material level in the industries of petroleum, chemical industry,
metallurgy, pharmaceuticals, food and paper making.