Magnetic level meters often fail in the process of practical application. The causes of these failures vary; a single component failure causes some, and the simultaneous loss of multiple components causes some. Today, we will talk about the common failures of magnetic flap level meters in the application process and analyze their causes.
1. The display panel shows a fault.
1.1 The distance between the display panel and the float is too large. It is because of the insufficient driving force of the magnet of the magnetic float, resulting in the flip flop being unable to flip.
1.2 The gap between the flip-flop and the guide rail is not designed correctly (the hole may be too small), resulting in high friction and the flip-flop being unable to flip.
1.3 The magnet in the flip-flop is too tiny, or the magnetic force disappears, resulting in the flip-flop being unable to flip or flip abnormally.
1.4 Impurities such as water or dust penetrate the display panel, resulting in difficulties in flip flop turning.
1.5 Low ambient temperature and icing of the medium prevent the magnetic float from moving and the flip flop from displaying the leaching level.
2. The reed switch remote transmitter display is not typical.
2.1 The magnetic flap level meter in situ display is standard, but the reed switch remote transmitter display is not typical.
2.2 Domestic glass tube reed switch remote transmitter is fragile, easy to short circuit or open circuit, resulting in abnormal.
2.3 Defective resistor soldering.
2.4 The gap between the metal contacts of the reed switch remote transmitter is too small. Therefore, when the medium temperature is too high, the metal sheet expands when heated, and a closed state appears.
2.5 The pressure exceeds the rated value, damaging the switch.
3. The reed switch remote transmitter and the magnetic flap level meter are abnormal.
In this case, we determined that the magnetic float was stuck. However, the magnetic float is stuck, usually for the following reasons.
3.1 When the magnetic float has been in use for some time, the magnetic float may become stuck and unable to move due to impurities.
3.2 The installation angle of the float is less than 87 degrees, resulting in a tilt. It will affect the movement of the magnetic float up and down.
3.3 The magnetic float attracts iron filings or other contaminants due to its magnetism, resulting in jamming.
4. The magnetic float cannot move due to low ambient temperature and icing of the medium.
The magnetic float is damaged. There are usually the following reasons.
4.1 The strength of the magnetic float is not enough, resulting in excessive pressure when concave to the inside, and deflated.
4.2 We have not welded through or missed the weld. It will lead to the float being cracked under pressure and water entering inside the magnetic float.
4.3 The magnetic float is used for too long or at a high temperature for a long time, and the demagnetization phenomenon occurs.
4.4 The magnets in the magnetic float are loose, and the magnetic float cannot work.
5. The local display is standard, and the remote transmission is abnormal.
Generally speaking, there are a variety of reasons for this failure. The following are some of the more common causes.
5.1 Resistance soldering.
5.2 Pressure exceeds the rated value, resulting in damage to the switch.
5.3 The domestic glass tube reed switch is fragile, and the reed switch is short-circuited or open-circuited, resulting in an abnormal remote transmission.
5.4 If the medium temperature is too high, the metal sheet expands with heat, and the metal contact gap of the reed switch is small, resulting in a closed state.
6. Neither the telemeter nor the magnetic flap moves.
This failure phenomenon is usually floated abnormalities caused by the following two central performances.
6.1 As a result of float damage, resulting in an incorrect indication of the display panel, it will also lead to damage to the float in the magnetic flap level meter.
6.2 Due to the incorrect design of the float’s strength, pressure on the inside of the depression deflated.
6.3 The weld is not welded through or leaked, resulting in the float being cracked under pressure and the float entering the water.
6.4 The float has been used for a long time or demagnetized under high temperatures for a long time and cannot be used commonly.
6.5 The float does not work correctly due to a loose magnet in the float.
7. The float is stuck in the cause
As the float is stuck, the display panel’s inaccurate indication leads to the magnetic flap level meter in the float being attached for the following common reasons.
7.1 The ambient temperature is too low, and the float cannot move normally due to the freezing of the medium.
7.2 The installation angle of the float is less than 87 degrees. Due to the tilt of the float, the float’s up and down movement is affected.
7.3 The float cannot generally move due to its magnetic adsorption of iron filings or other dirt, resulting in the float being stuck.
7.4 The float is stuck by infiltrated impurities due to poor sealing, resulting in the float’s inability to rise or fall.
The so-called found cause of the failure will be solved – half. Through the above analysis of common faults of the magnetic flap level meter, we found a way to deal with the problem. We can appear according to the failure and its causes, targeted to deal with.
8. Suggestions for the use of a magnetic flap level meter.
When the level meter is used on-site, we should pay special attention to the fact that we should first open the upper gate valve and then open the lower gate valve. Because the bottom of the magnetic float level meter connecting tube is equipped with a thrust spring to protect the float. Otherwise, the effect of the significant differential pressure may smash the float, rendering the level meter unusable.
When using the level meter, we must be careful not to use a strong magnet to pull the float up and down outside the connecting tube for inspection. Otherwise, it will cause the magnetic float to magnetize and change polarity or even make the float less magnetic, making it difficult to work correctly.
9. Conclusion
In response to the above-mentioned common failures of magnetic flap level meters, BCST GROUP pays more attention to solving problems at the source.
For example, the floats of our magnetic flap level meters are made of high-quality 304 or 316L stainless steel. As a result, the inner diameter of the float is precisely matched to the float’s outer diameter, and the float’s size is accurately calculated according to the density and pressure of the medium on site.
We strictly control the quality of our products from material selection, design, and production to effectively avoid the occurrence of faults in the magnetic flap level meter. At the same time, this also makes the magnetic flap level meter significantly more reliable. However, on-site problems can not be foreseen one by one. In case of exceptional circumstances, welcome to call the factory to consult.
