Analysis of common problems in photoelectric liquid level sensors

The photoelectric liquid level sensor is a new type of contact point liquid level measurement and control device developed by using the principle of light reflection and refraction at the interface of two different media. It has many advantages such as simple structure, high positioning accuracy, no mechanical parts, no need for debugging, high sensitivity and corrosion resistance, low power consumption, and small size, and has been gradually recognized by the market. The following editor from Gongminwang will answer some common questions about photoelectric liquid level sensors?

The photoelectric liquid level sensor is a new type of contact point liquid level measurement and control device developed by using the principle of light reflection and refraction at the interface of two different media. It has many advantages such as simple structure, high positioning accuracy, no mechanical parts, no need for debugging, high sensitivity and corrosion resistance, low power consumption, and small size, and has been gradually recognized by the market. The following editor from Gongminwang will answer some common questions about photoelectric liquid level sensors?

Can the photoelectric liquid level sensor be used in corrosive environments?

Ordinary liquids are not corrosive, so the photoelectric liquid level sensor uses ordinary materials. If it is used in corrosive liquids such as diesel and gasoline, then the photoelectric liquid level sensor needs to use a PSU material probe. The unit price of the photoelectric liquid level sensor made of PSU will be higher, but it can detect corrosive liquids. For example: a British SST strong corrosion resistant photoelectric level sensor/photoelectric level switch – LLG810D3L24-003 provided by Gongcai.com.

How about the waterproof performance of the photoelectric liquid level sensor?

The general installation method of the photoelectric liquid level sensor is as follows) We can see that only a part of the head is in contact with the liquid. Generally, the waterproof level of this kind of situation does not need to be particularly high. However, there are some cases where it is necessary to put the entire probe in the liquid for detection. In this case, you can choose a photoelectric level sensor with a higher waterproof level, such as IP68.

Analysis of common problems in photoelectric liquid level sensors

How to install the photoelectric liquid level sensor?

I won’t say much about the wiring part, let’s introduce the installation of the probe part. The installation of Nengdian Technology is very simple. There are two main types, which can be directly screwed in (with threads), and the other can be fixed with screws with holes.

Analysis of common problems in photoelectric liquid level sensors

How to solve this problem if it is used in liquid with fluctuating liquid level?

This problem can be solved by adding anti-shake logic to the program. If the liquid level is not reached, but water vapor or water droplets are generated, how to solve the problem of misjudgment? You can use the program bar to calculate this factor. When there is water droplets, it will not affect the test results to prevent misjudgment.

What are the functions of the photoelectric liquid level sensor?

The function of the photoelectric liquid level switch is to detect the liquid level. Compared with the float type liquid level switch and the capacitive liquid level switch, the photoelectric liquid level switch is less affected by external factors, so it is more reliable and has a long life. The main function of the photoelectric liquid level switch is to detect the change of liquid level, which can realize the functions of water shortage protection, low liquid level reminder, and high liquid level alarm. For example:

Water shortage protection function:

When the photoelectric liquid level switch detects that there is no water in the water tank, the liquid level switch will give a signal, and the equipment will stop working after receiving the signal to realize the water shortage and power failure protection function to prevent the machine from drying out. For example, the water level control of coffee machines, water purifiers, and steam microwave ovens use liquid level switches to achieve water shortage protection.

Analysis of common problems in photoelectric liquid level sensors

Low liquid level reminder:

When the liquid level switch detects that the liquid reaches the set position at the bottom, the liquid level switch will give a signal reminder. After the equipment receives the signal, the control circuit realizes the alarm reminder function-light reminder, buzzer alarm, etc. Specific applications such as humidifiers, aroma diffusers, etc.

Analysis of common problems in photoelectric liquid level sensors

High level detection:

The photoelectric liquid level switch is installed at the bottom to realize the automatic water filling function. When it is detected that the internal water tank is full of water, the liquid level switch gives a signal to drive the water pump to add water. To stop adding water, you need to install another liquid level switch at a high place to realize high liquid level detection. When the water level rises to the high position of the photoelectric liquid level switch, the liquid level switch gives a signal and stops adding water to realize overflow prevention Features.

Analysis of common problems in photoelectric liquid level sensors

The Links:   LMS700KF01-002 2MBA600VN-120-50

Related Posts

Leave a Reply

Your email address will not be published. Required fields are marked *