The use of magnetic flap level gauges, how to manage magnetic flap level gauges

The glass plate level gauge can be used directly to observe the level height of the medium in various containers. It is suitable for liquid level indication in petroleum, chemical and other industrial fields, the level gauge has a simple structure, intuitive and clear observation, no blockage, no leakage, easy installation and simple maintenance. The upper and lower ends of the glass plate level gauge are connected with the container to form a communicator, and the actual height of the liquid level in the container can be directly observed through the glass plate.

The upper and lower valves are equipped with safety steel balls, and when the glass is damaged due to accidents, the steel balls are automatically sealed under the action of the internal pressure of the container, preventing the liquid in the container from overflowing, and ensuring the safety of the operator.

The magnetic float level gauge is mounted on the extension tube on the outside of the tank, and the level inside the tank can be clearly known by the flap indicator. A magnetic switch can also be installed on the outside of the bypass pipe as an electrical contact signal output, or a liquid level transmitter can be installed for long-distance liquid level signal transmission and liquid level control. This level gauge is a reliable safety instrument.

Due to the closed structure of the magnetic coupling isolator. It is especially suitable for flammable, explosive and corrosive toxic liquid level detection. In this way, the liquid level detection method in the original complex environment becomes simple, reliable and safe.

The level gauge has a direct-reading feature that is displayed locally. There is no need for multiple level gauge combinations. There are monomers for full-scale measurements.

The equipment has the advantages of fewer holes, clear display, eye-catching logos, and intuitive reading. When the level gauge is directly equipped with the indicator, the intermediate transmission of the system's signal detection can be dispensed with, thus improving its transmission accuracy.

1. The material level indicated by the magnetic flap level gauge is very intuitive and eye-catching. Since the flap is white and red on both sides. The two colors have a high contrast. During the day, you can see the position of the liquid level displayed on the flap from a distance, and at night it is easy to determine the position of the liquid level with indoor and outdoor lighting.

2. It can be applied to the level display of various liquids. For more viscous liquids, larger diameter risers and magnetic floats are available. For less viscous liquids, smaller diameter risers and floats are available.

In this way, clogging of the material can be avoided and false levels are not generated. For liquids with different densities, the size of the float can be designed according to the density of the liquid, so that the magnetic float can float freely in the liquid.

3. The indicator is accurate, flexible, safe and reliable, and can be applied to all kinds of pressure vessels.

1. The level gauge should be cleaned once a day.

2. When cleaning, first open the cap of the iron pipe of the water level gauge of the liquid level gauge, carefully take out the liquid level gauge, and then clean the chips, sundries and dirt around the equipment.

3. The level gauge should be placed neatly, and the pipes and lines should be organized; Good lubrication, oil or oil change on time, continuous oil, no dry friction, normal oil pressure, bright oil mark, smooth oil path, oil quality meets the requirements of the liquid level gauge, oil gun, oil cup, linoleum clean; Trichloroethylene or alcohol can also be injected into the impulse hole to soak for about 5 minutes at half of its height, and then shake it slightly and repeat many times until it is cleaned. It is forbidden to use any appliance to clean the impulse hole to avoid damaging the pressure-sensitive diaphragm of the sensitive core.

4. Clean the liquid level height of the inner medium of the level gauge, and avoid using brushes or metal tools with excessive hardness to avoid damaging the sensitive core and pressure interface thread.

5. After cleaning, slowly put the level gauge back into the iron pipe, feel that the lower part of the iron pipe has been placed, install the cap back to the original place, and reinstall the level gauge after removing and cleaning, and then compare the water level gauge at the same water level of the sluice gate again, and correct the detection value of the secondary instrument to ensure the correctness of the sampling data.

6. Daily maintenance of the land, generally daily maintenance and weekly maintenance, also known as daily and weekly maintenance.

Manage? Is it maintenance?

The magnetic flap level gauge has a simple structure and does not have any seals that need to be replaced frequently. If the water quality is not good, discharge the sewage once a month, close the valves at both ends, open the sewage valve at the bottom, and discharge the water in the pipe. If the magnetic flip column (piece) of the display panel is distorted, it is necessary to consider replacing the magnetic float or display panel.

The magnetic flap level gauge is cheap, that is, it is necessary to clean up impurities frequently, how do you want to manage it? With far EasTone telecommunications, you can connect them all to the central control room 、、、

The magnetic flap level gauge relies on a float to control the magnetic flap column, and the dirt should be cleaned regularly, often magnetically.

The magnetic flap level gauge (also known as the magnetic float level gauge) is developed according to the buoyancy principle and magnetic coupling. When the liquid level in the measured container rises and falls, the magnetic float in the liquid level gauge body tube also rises and falls.

The permanent magnet in the float is transmitted to the magnetic column indicator through magnetic coupling, driving the red and white column to turn 180°, when the liquid level rises, the column changes from white to red, and when the liquid level falls, the column changes from red to white, and the red and white junction of the indicator is the actual height of the liquid level inside the container, so as to achieve a clear indication of the liquid level.

The magnetic flap level gauge is a liquid level measuring instrument, which is mainly used for high and low level measurement of liquid level.

The magnetic float level gauge mainly relies on mechanical devices to detect the liquid level in the tank, which can effectively realize real-time measurement and control of the liquid level. In cooperation with the SW-11 magnetic switch, SW-21 lightweight magnetic switch and REED-11 reed transponder transmitter developed by Dongrun Automation, it can realize automatic control and remote operation of liquid level. For example, the high and low level alarm can be realized through the magnetic switch, and the alarm signal outputs a standard switching signal, which controls the opening and closing of the external feeding equipment with this switching signal, and automatically controls the level value of the liquid level in the tank.

If the tank is not equipped with a magnetic float level gauge for liquid level measurement and monitoring, there will inevitably be a phenomenon of liquid overflow or lack of liquid, which will affect the normal production of the enterprise. If it is equipped with a magnetic flap level gauge, it can measure the position of the liquid in real time, so that the liquid can be kept at a stable level, so as to ensure the normal production and operation of the enterprise.

The working principle of the magnetic flap level gauge is simply the principle of communicator + magnetic coupling. For us laymen, it may be better to understand this, but the following animation can explain your problem more intuitively, I hope it will be helpful to you.

Since the magnetic flap level gauge measurement shows that it is partially not in direct contact with the medium, it is generally highly reliable. Remember not to measure with electricity. When using a logic pen or oscilloscope to detect signals, use a multimeter ohm to block time.

Care should be taken not to make the probe touch both measurement pins at the same time, as the essence of this situation is a short circuit when the power is applied.

When repairing instrument faults in humid environments, it is necessary to use a multimeter to test whether the points of the printed circuit are unobstructed, because the main fault in this case is copper foil corrosion. When overhauling the internal circuit of the instrument, if the contacts of the installed components and the circuit board are coated with insulating varnish, the parameters of each point can be welded to the table pen of the multimeter with ordinary hand-sewn needles, so as to pierce the paint layer and directly measure each point without peeling off the paint layer in a large area. Do not plug and unplug various control boards and plugs with power.

Because in the case of power-on, plugging and unplugging the control board will produce a strong induced electromotive force, and the instantaneous counterattack voltage is very high, which is easy to damage the corresponding control board and plug. Don't blindly knock and bump when overhauling, so as not to expand the fault and get worse the more you repair. When the side-mounted magnetic flap level gauge is disassembled and the instrument is adjusted, the original position should be recorded for restoration.

When repairing precision instruments, if small parts are accidentally bounced off, magnet scanning and line of sight scanning methods can be used to find them.

In the process of daily use, in order to ensure that the magnetic flap level gauge has good performance, attention should be paid to the daily maintenance and maintenance of the magnetic flap level gauge

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

2) There should be no solid impurities and magnetic impurities in the cylinder of the level gauge, so as not to cause jamming and weakening of the magnetism of the float.

3) For low-temperature type and liquefied gas special products, the main body of the level gauge adopts vacuum jacket insulation, and pay attention not to destroy the jacket during installation and use, so as not to affect the product quality.

4) After cleaning the level gauge or replacing the float, open the blowdown flange, and when loading the magnetic float, it should be noted that the heavy end with the magnetic end is upward, and it cannot be reversed.

Regular cleaning, when the display is not accurate, you also need to brush the magnet, if you need to pay attention to the false liquid level in the summer, because the medium in the tank will blow up the float due to serious gasification due to temperature. This in turn shows the wrong level gauge. The magnetic flap level gauge can achieve high sealing, leakage prevention and safe and reliable measurement of liquid level under high temperature, high pressure, high viscosity and strong corrosive conditions, the whole process of measurement without blind spots, eye-catching display, intuitive reading, and large measurement range, with liquid level alarm, control switch, can realize the upper and lower limit alarm and control of liquid level or boundary level, with liquid level transmitter can be liquid level.

1.Avoid the inlet to avoid false reflections.

Common problems and faults and precautions of magnetic flap level gauge:

Common problems and faults and precautions of magnetic flap level gauge solve common liquid level problems and failures for you. During on-site calibration, it was occasionally found that the float was not flexible enough to move up and down. This is mostly caused by improper installation, and the magnetic flap level gauge should pay attention to whether the center of the upper and lower flanges is in a line and whether it is perpendicular to the horizontal plane.

Generally speaking, the angle with the horizontal plane should not be less than 87 degrees, if the deviation is large, it may affect the smooth movement of the float.

Many people will ask the question: how to extend the life and safety of the magnetic flap level gauge during use? That's a big deal for a lot of people on this issue.

Some people make maintenance mistakes, which greatly shortens the life of the magnetic flap level gauge, and it is said that the quality of the instrument is poor, which is not objective and unscientific. In order to prolong the service life of the magnetic flap level gauge, I think it is necessary for us to understand the structure of the magnetic flap level gauge. Magnetic flap liquid level gauge is an indicator installed on the outside of the barrel tank or above, to indicate and manipulate a kind of control surface of the liquid level height in the barrel tank, the indicator is made up of a magnetic color sheet, when the magnetic float in the body tube rises with the liquid level, the color sheet flips, can show the liquid level height.

It is also possible to install a magnetic switch or a remote transmitter on the body tube to output a switching signal or an analog signal. It is suitable for high temperature, high pressure, corrosion resistance and other occasions, and can be displayed on the spot and operated for long distances. In fact, the maintenance and protection of the magnetic flap level gauge is secondary, because he rarely needs protection, as long as the device is accurate, it can extend the service life.

So let's get to know how to get it right.

1. The level gauge must be installed vertically to ensure that the float assembly can move up and down freely in the main tube.

2 It is best to install a shut-off valve between the container and the level gauge to clean and overhaul the level timer to cut off the material.

3. No magnets are allowed to be close to the main tube of the level gauge, otherwise the normal operation of the level gauge will be directly affected.

4. After the level gauge is installed, the magnet needs to be corrected, and the turning column is guided once, and the red is displayed below the zero position, and the white is displayed above the zero position.

5. When the liquid level gauge is put into operation, the valve of the lower drain pipe should be opened first, so that the liquid medium can enter the main pipe smoothly, so as to avoid the liquid medium from rising rapidly with the float assembly, and causing the column to flip and fail and turn over randomly. (If this phenomenon occurs, it can be recalibrated with magnets after the liquid level is stable).

6. During transportation, ensure that the float assembly of the magnetic level gauge is not damaged, and will generally be taken out of the main tube of the liquid level gauge before leaving the factory. After the installation is completed, the flange of the sewage valve below is opened and re-installed into the main pipe, and the float assembly must not be installed upside down, which must be remembered.

Magnetic level gauges are implemented as standards.

Standard number: HG T 21584-1995

Standard name: Magnetic level gauge.

Standard Status: Active.

Date of implementation: 1996-3-1

Promulgating department:Ministry of Chemical Industry.

Brief introduction: This standard stipulates the type, parameters, technical requirements and relevant use regulations of magnetic level gauges. This standard is applicable to magnetic level gauges used for equipment monitoring in chemical, petrochemical, pharmaceutical and other industries with a working temperature of -40 300 liquid density greater than or equal to liquid viscosity less than 150cp.

The magnetic level gauge is mainly based on the principle of magnetic coupling and buoyancy to realize the detection of liquid level or boundary level, as shown in the figure. In the non-magnetic chamber, a magnetic float is installed, which is always suspended on the liquid level or interface, and the position of the float changes synchronously with the change of the tank level. An indicator is connected to the cavity outside, which is a vacuum-sealed glass tube, which is equipped with a magnetic flying standard or a magnetic flap indicator, and the float in the cavity attracts each other and changes synchronously through magnetic coupling, indicating the corresponding position of the float in the cavity, that is, the height of the liquid level or interface, so as to realize the synchronous indication of the liquid level or the boundary position.

The principle is based on the magnetic float effect:

When the magnetic float rises, it will repel the flap with the principle of repulsion, and make the flap rotate, so that the liquid level can be displayed.