19 kinds of common liquid level work schemes can meet most working conditions. The animation display is very interesting

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The liquid level switch, as the name implies, is the switch used to control liquid levels. In terms of form, it is mainly divided into contact and non -contact formula.

Non -contact such as capacitive liquid level switch, contact type, such as: float -type liquid level switch, electrode liquid level switch, electronic liquid level switch. Capacitor liquid level switches can also be implemented in contact methods.

1. Magnetic flip liquid level meter

Magnetic flip liquid level meter: also known as magnetic float liquid level meter, magnetic turmoil level meter.

principle

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

: The principle of connector, developed from the action of buoyancy principles and magnetic coupling. When the liquid level in the measured container rises and falls, the permanent magnetic steel in the floating seeds is transmitted to the magnetic turmoil indicator panel through magnetic coupling to flip the red and white column flipping At 180 °, when the liquid level rises, the pillar turns from white to red. When the liquid level falls, the column turns from red to white, and the actual height of the liquid level in the container on the panel is the actual height of the liquid level in the container, thereby achieving liquid level display.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

2. Floating ball liquid level meter

The structure of the float liquid level meter is mainly designed and produced based on buoyancy and static magnetic field principles. The position of floating balls (referred to as floats) with a magnetic body is affected by buoyancy in the measured medium: changes in liquid levels cause changes in the position of magnetic floats. The effect of the magnet and sensor (magnetic spring switch) in the floating ball changes the number of components (such as fixed value resistance) connected to the circuit, and then changes the electrical amount of the instrument circuit system. That is, changes in the position of magnetic floats cause changes in electrical volume. By detecting changes in electrical volume, the liquid level in the container is reflected.

3. Steel belt level meter

It is designed and produced by the principle of mechanical balance. When the liquid level changes, the original mechanical balance is disturbed by the float, and the new balance will be achieved through the movement of the steel zone. The liquid level detection device (float) drives the steel belt movement according to the condition of the liquid level. The displacement transmission system rotates through the movement of the motor drive through the steel zone, and then acts on the counter to display the condition of the liquid level.

4. The radar liquid level meter

The radar liquid level is a measuring instrument based on the principle of time itinerary. The radar wave runs at the speed of light. The operation time can be converted into a substance signal by electronic components. The probe emits high -frequency pulses and spreads along the cable probe. When the pulse encounters the surface of the material, reflects back and is received by the receiver in the instrument, and transforms the distance from the signal to the property signal.

5. Magnetic telescopic liquid level meter

When the sensor of the magnetic telescopic liquid level is working, the circuit part of the sensor will inspire the pulse current on the waveguide wire. This current will generate pulse current magnetic fields around the waveguide wire along the waveguide wire. There is a float outside the sensor measurement rod of the magnetic telescopic liquid level. There is a set of permanent magnetic rings inside the float. When the pulse current magnetic field meets the magnetic ring generated by floating seeds, the magnetic field around the floating seeds changes, so that the waveguide silk made of magnetic telescopic material generates a twisting wave pulse at the place where the floating is located. The waveguide silk is returned and detected by the detection agency. The time difference between the pulse current and the torsion wave can accurately determine the position of the floating child, that is, the location of the liquid surface.

6. Radio frequency guidance liquid level meter

The radio frequency charger is composed of the sensor and the control instrument. The sensor can be installed with a stick, coaxial, or cable -type probe. The pulse card in the sensor can be converted to the pulse signal to the control instrument, and the control instrument is converted to the project quantity after calculation processing, thereby realizing the continuous measurement of the material level.

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The working principle of the sound fork type controller is to vibrate the sound fork by a pair of voltage crystals installed on the sound fork base at a certain resonance frequency. When the sound fork is in contact with the measured medium, the frequency and amplitude of the sound fork will change. These changes are detected by the smart circuit, processed and converted it into a switch signal.

8. Glass plate liquid level meter (glass tube liquid level)

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

The glass plate liquid level meter is connected to the connecting device by connecting the flange to the container. The height of the liquid level in the container can be directly read through the glass plate.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

9. Pressure liquid level transmitter

The pressure -type liquid level meter adopts the principle of static pressure measurement. When the liquid level transmitter is put into a depth of the measured liquid, the sensor welcomes the pressure surface of the liquid surface, and the pressure of the liquid is introduced into the sensor through the gas guide stainless steel. The positive pressure cavity, then the atmospheric PO on the liquid surface is connected to the negative pressure cavity of the sensor to offset the PO on the back of the sensor, so that the sensor measures the pressure as: ρ.h. By measure the pressure p, the liquid level depth can be obtained.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

10. Capacitor liquid level meter

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

The capacitive liquid level meter uses the changes in the capacitor to measure the height of the liquid surface. It is a metal rod inserted into the liquid container. The metal rod is the pole of the capacitor, and the container wall is another pole of the capacitor. The medium between the two electrodes is liquid and the gas on it. Because the dielectric constant ε1 of the liquid is different from the dielectric constant ε2 on the liquid surface, such as: ε1> ε2, when the liquid level rises, the total dielectric constant value between the two electrodes of the capacitor liquid level is increased. As a result, electricity capacity increases. Conversely, when the liquid level decreases, the ε value is reduced, and the capacity is reduced. Therefore, the capacitive liquid level can measure the level of the liquid level through changes in the capacitance between the two electrodes.

11. Intelligent electric floating tube liquid level meter

The smart electric bucket liquid level meter is a liquid level measurement instrument designed based on the law of Archimede’s law and the principle of magnetic coupling. The instrument can be used to measure liquid level, boundary and density, and is responsible for the output of the upper and lower limit alarm signal.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

12. Polymark level meter

It is designed and produced by the principle of mechanical balance. When the liquid level changes, the original mechanical balance is disturbed by the float, and the movement of the steel belt (rope) will reach a new balance. The liquid level detection device (float) drives the steel belt (rope) movement according to the liquid level, and the displacement transmission system drives the on -site indicator device through the movement of the steel belt (rope), and then display the liquid level on the display device.

13. Floch liquid level transmitter

The buoy is immersed in the liquid in the buoy room, and the torque tube system is rigidly connected. The force that the torque tube system is affected is the net value of the buoyancy that the buoyant tube is reduced by the buoyant tube. The position, density or boundary of the floating tube indoor liquid causes the buoyancy changes suffered from the float tube immersed in the liquid, thereby changing the turning corner of the twist pipe. The change was passed to the sensor connected to the rigidity of the torque tube, which changed the output voltage of the sensor, and then was enlarged and converted to the 4-20mA current output by electronic components. The float level transmitter adopts a microcontroller and related electronic line measurement process variables, providing current output, driving LCD display and providing Hart communication capabilities.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

14. Electric connection point liquid level meter

The water level meter is designed according to the water and vapor resistance rates. The electrode of the measuring cylinder is less impedance to the cylinder in the water. There is a large impedance to the tube. With the changes in the water level, the amount of electrode in the water changes. Convert to changes in the resistance value. Transmit to the second instrument to achieve functions such as water level display, alarm, and protection of locks.

15. Magnetic dual -color electronic liquid level meter

The magnetic electronic two -color liquid level meter is made of high -quality stainless steel and imported electronic components. The display site adopts high brightness LED double -color light emitting tube to form a columnar display. Through the red and green changes of LED light, it can realize the upper and lower limit alarms and control of the liquid level. Essence

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

16. External test liquid level meter

External measurement liquid level meter is a instrument that uses the principle of sound ranging, “micro -vibration analysis” technology is measuring liquid level. The two small external test liquid level meter ultrasonic sensors are installed at the bottom of the tank, and the other is installed on the side wall of the tank for density changes. The signal of the external test liquid level meter sensor is transformed by the microprocessor and outputs to the local display or user control system. You can calculate the height of the liquid in the tank and the volume of the liquid in the tank.

17. Static pressure liquid level meter

The static pressure liquid level transmitter is encapsulated in the stainless steel shell in the stainless steel shell. The front -end protective cap can protect the sensor film. The ventilation pipe is connected to the outside world with an internal structure anti -exposed design.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

18. Ultrasonic liquid level meter

The ultrasonic liquid level meter/object meter is composed of a complete ultrasonic sensor and control circuit. The ultrasonic waves emitted through the ultrasonic sensor are reflected by the surface of the liquid, and the required time and calculation are calculated. The temperature effect of the temperature sensor can be corrected through the temperature sensor. 20madc analog signal to realize remote reading on -site instrument.

19. Differential voltage liquid level meter (double flavor liquid level meter)

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

Differential pressure liquid level transmitter is the electrical component that is transformed from a conversion part to a current signal to the control room by measuring the poor pressure difference. Differential voltage liquid level meter is mainly used for liquid level measurement with a closed container. The size of the differential pressure also represents the height of the liquid level. To measure the differential pressure between the two phases between the measurement of the gas and the liquid to know the level of the liquid level.

19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

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19种常见液位计工作原理图,可满足多数工况,动画展示很有趣

[Data collection, look at the end of the article]

[Data collection, look at the end of the article]

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