Magnetic liquid level gauge is a new kind of field detection instrument similar to direct reading liquid level gauge. Its main body is made of stainless steel, which can completely replace glass tube (plate) liquid level gauge. It uses the principle of magnetic coupling. The liquid medium is completely isolated from the indicator, and the liquid level detection of flammable, explosive and toxic medium is more safe and reliable. The liquid level gauge has clear indication and is easy to observe. The local indication forms include red and white column turning or ball turning and buoy tracking.

The liquid level gauge is suitable for liquid level display on chemical, petroleum and other industrial equipment containers. It can be used to directly indicate the liquid level height in the sealed container. It has the advantages of simple structure, visual reliability, durability, etc., but the medium in the container must not corrode with steel, steel paper and graphite compression ring.

characteristic

1. The float is used as the measuring element, and the magnetic steel is used to drive the column display, so no energy is needed. 2. Equipped with upper and lower limit switch output, remote alarm and limit control can be realized. 3. Equipped with transmitter, remote liquid level indication, detection and control can be realized.

Structure and working principle

1. The basic type is based on the buoyancy principle. The float moves up and down in the measuring pipe with the rise and fall of the liquid level. The permanent magnetic steel in the float drives the red and white column to turn 180 ° through coupling. When the liquid level rises, the column turns from white to red, and when it falls, it turns from red to white, so as to realize the liquid level indication.

2. The transmitter is installed on the float level gauge for electric remote transmission. The float moves up and down, and the measuring elements in the guide rod act in turn through magnetic coupling to obtain the change of resistance signal, which is converted into a standard signal output of 0~10mA or 4~20mA, and connected with the display instrument or computer to achieve the purpose of remote transmission.

3. The upper and lower limit switches are output on the liquid level meter riser, and the user sets the upper and lower limit positions to install the controller. The controller is equipped with a self holding reed switch. When the magnetic float moves with the liquid level to make the reed switch act, the alarm or limit control is realized.

technical parameter Measurement accuracy: ± 1cm, ± 2cm (column turning) ± 1cm (buoy) Measuring range: 0~400 to 0~15,000mm Medium density: ≥ 0.45g/cm ³ Medium viscosity: ≤ 0.02Pa. s (at medium working temperature) Working temperature: - 20 ℃~450 ℃ Working pressure: - 100KPa-4.0MPa Installation method: side mounted or top mounted Standard flange: DN20 Interface thread: M20 * 1.5 internal thread Output signal: 4-20mA Material specification: stainless steel 304/316, titanium alloy

Maintenance:

1. There should be no solid impurities and magnetic impurities in the liquid level gauge cylinder to avoid jamming the float and weakening the buoyancy.

2. According to the medium condition, the main pipe can be cleaned regularly to remove the sediment impurities in the pipe.

3. After the liquid level gauge is cleaned or the float is replaced, open the drain flange. When installing the magnetic float, pay attention to that the heavy end with the magnetic end is upward and cannot be inverted!

4. For low temperature type and liquefied gas special type products, the main body of the liquid level gauge is insulated with a vacuum jacket. Pay attention not to damage the jacket during installation and use, so as not to affect the product quality.