ESMPE20 water tank level sensor for water purification and wastewater treatment
Working Principle
The photoelectric liquid level switch uses infrared detection, utilizing the principles of light refraction and reflection. Light will undergo reflection or refraction at the interface between two different media. When the liquid being measured is at a high level, a boundary is formed between the liquid and the photoelectric switch. When the liquid is at a low level, a boundary is formed between the air and the photoelectric switch. These two types of boundaries result in different intensities of reflected light received by the photoreceptor inside the switch, corresponding to two different switch states.
Product Features
1.Features accurate liquid level detection, high repeatability, and fast response speed.
2.The output is only related to whether the photoelectric probe contacts the liquid surface and is unrelated to other properties of the medium such as temperature, pressure, or density.
3. High reliability, long service life, and maintenance-free advantages, and can also be made into multi-point liquid level switches.
Product detail
Technical Specifications
|
Parameter |
Condition |
Typical |
Units |
|
Operating voltage |
|
5 |
V |
|
There is a water state output voltage |
VDD=5V Ta=25℃ |
0 |
V |
|
The output voltage in the waterless state |
VDD=5V Ta=25℃ |
5 |
V |
|
There is a water state current |
VDD=5V Ta=25℃ in water |
15 |
mA |
|
No water state current |
VDD=5V Ta=25℃ no water |
20 |
mA |
|
Operating temperature |
VDD=5V |
-25~85 |
℃ |