In recent years, with the continuous development of electronic technology and automation, liquid level measurement and control technologies have greatly improved. The function of the liquid level sensor has been increasingly improved and has provided great help to many industries. For example, the level measurement of various media in systems and industries such as petrochemical, metallurgy, electric power, pharmaceuticals, water supply and drainage, and environmental protection are all inseparable. With the monitoring of liquid level, the importance of liquid level sensors has become increasingly prominent, even directly affecting the quality of products. Are we familiar with the level sensors that are relevant to our lives? Today, the small series of industrial network to come to us to specifically introduce the relevant knowledge of photoelectric level switch.
Optoelectronic liquid level switch is a type of liquid level switch commonly used, the working principle is the use of photoelectric level switch sensor contains an infrared light emitting diode and a photoelectric receiver. The light emitted by the LED is directed into the prism on the top of the sensor. If there is no liquid, the light from the light emitting diode is reflected directly from the prism back to the receiver. When the liquid dips into the prism, the light is refracted into the liquid, so that the receiver does not receive or can only receive a small amount of light. This works by sensing this change. The receiver can drive the electrical switch of the internal photoelectric level switch to activate an external alarm or control circuit. The SST's optoelectronic liquid level switch series designed by this working principle has extremely high accuracy and repeatability in the liquid level position monitoring process. Its repeatability is up to ±1mm in the liquid interface. Therefore, the photoelectric level switch is a bit as follows:
1 liquid level detection accuracy, high repeatability, fast response.
The output of the liquid level is only related to whether the photoelectric probe is in contact with the liquid surface (body) and has nothing to do with the other characteristics of the medium (temperature, pressure, density, electrical parameters), so the liquid surface detection is accurate and the repeat accuracy is high; the response speed is fast and the liquid level is high. The control is very precise.
2 can be made of multi-level liquid level sensor.
Due to the relatively small size of the photodetector, multiple photosensors can be mounted on one measurement body to create multi-level liquid level sensors and variable controllers.
3 high reliability, long life, maintenance-free.
Because all components inside the sensor are encapsulated by resin, there are no mechanical moving parts inside the sensor, so the sensor has high reliability, long service life, and maintenance-free.
4 free debugging, no calibration, direct installation can be applied.
Since the level signal output is only related to whether the liquid is in contact with the photodetector, and has nothing to do with other factors, it does not require calibration and can be installed and used directly.
5 strong ability to adapt to the environment.
Vacuum, pressure environment, flammable and explosive occasions, and special liquid environments such as turbulence, bubble, vibration, steam, GDY-series photoelectric level switches can be adapted.
6 adapt to special container installation.
Photoelectric probes are ultra-small and can be mounted separately in narrow spaces for use in special tanks or containers.
To sum up the complaint in order to better measure the liquid level and improve the efficiency of the work, we recommend the photoelectric level switch LLE101101.
Optoelectronic Liquid Level Switches LLE series liquid level sensors can be divided into two types, one of which is: enhanced type; the second is: high temperature type. Among the high temperature types, there are LLE101101, LLE102101, LLE103101, and LLE205100 series. The level switch uses gasketed Vamac rubber, housing material polysulphone or stainless steel for hygienic applications, fast response, and cost-effective. At the same time, the LLE series enhanced level sensor uses a phototransistor flip-flop to provide a digital output that indicates the presence of liquid. Supply voltage 5.0 Vdc to 12.0 Vdc during operation, nominal supply current 5 mA, operating temperature -40°C to 125°C, terminal type 250 mm lead, pressure range 0 bar to 5 bar, at 25° The output current sinks up to 40 mA at C. Hysteresis is 2 mm, response time - liquid drop is 1 s maximum (in ethanol), response time - liquid level rises 50 μs, repeatability 1 mm. This series offers reverse polarity, overvoltage, short circuit, and transient protection. Therefore, it is widely used in automotive vehicle, household appliances, food and beverage processing machinery, compressors, machine hosts, vending machines and other fields.
Fork Type Connecting Terminals
Fork Type Connecting Terminals,Terminals,Connecting Terminals
Taixing Longyi Terminals Co.,Ltd. , https://www.longyicopperlugs.com