Three top popular model level transmitters
1. Float type liquid level transmitter
The buoy type liquid level transmitter changes the magnetic floating ball into a buoy, and the liquid level sensor is designed according to Archimedes buoyancy principle. The float type liquid level transmitter uses the tiny metal film strain sensing technology to measure the liquid level, boundary level or density of the liquid. It can carry out routine setting operation by pressing the button on the site during operation.
2. Floating ball level transmitter
Floating ball level transmitter is composed of magnetic floating ball, measuring conduit, signal unit, electronic unit, junction box and mounting parts. Generally, the specific gravity of magnetic floating ball is less than 0.5, which can float above the liquid level and move up and down along the measuring conduit. The conduit is equipped with measuring elements, which can convert the measured liquid level signal into a resistance signal proportional to the change of liquid level under the action of external magnetism, And convert the electronic unit into 4~20mA or other standard signal output. The liquid level sensor is a modular circuit, which has the advantages of acid resistance, moisture resistance, shock resistance and corrosion resistance. The circuit contains a constant current feedback circuit and an internal protection circuit, which can make the output current not exceed 28mA, so that the power supply can be reliably protected and the secondary instrument can not be damaged.
3. Static pressure level transmitter
The transmitter works based on the measuring principle of hydrostatic pressure. It generally uses a silicon pressure sensor to convert the measured pressure into an electrical signal, which is then amplified by an amplification circuit and compensated by a compensation circuit, and output in the form of 4~20mA or 0~10mA current.
With the development of modern times, the requirements for science and technology in all walks of life have gradually increased, especially in the field of precision. The liquid level sensor is a good choice. The liquid level sensor is widely used in the field of space, machinery manufacturing, chemical control, light industry automation, oil refining and other various technical fields.
