Liquid level refers to the level of liquid in sealed container (e.g. water tank) or open container (water tank). In daily life and industrial production and operation, it is often necessary to understand the liquid level in the container. Some cases are due to various factors, such as the tank is too large, it is inconvenient for people to enter, and the container materials such as water tank can not be seen through. At this time, the liquid level sensor needs to be used.
Speaking of liquid level sensor, many people may not know. Liquid level sensor refers to converting the liquid level signal in the container into switch signal or voltage and current signal, and then intuitively allowing the measurer to accurately know the liquid level in the container through the external circuit. In fact, liquid level sensors have been everywhere in every corner of our life. For example, the function of water level sensor is to monitor the change of liquid level and control liquid level. These functions are needed in many electrical appliances and equipment. The use of liquid level sensor can save time, time and convenience.
In recent years, with the social development and scientific and technological progress, many liquid level measurement sensors with backward measurement methods have been eliminated. Only sensors with the latest measurement technology, measurement speed and accuracy meeting certain requirements can survive in the era of Internet of things. In non-contact measurement, ultrasonic liquid level sensor and capacitive liquid level sensor are used; Photoelectric liquid level sensor is used in contact measurement.
However, due to the variety and complexity of liquid level sensors, photoelectric liquid level sensors have unique advantages in the liquid level sensor market with the advantages of accurate measurement, high precision, fast response, advanced technology and low power consumption. The British SST photoelectric liquid level sensor / photoelectric liquid level switch – llc200d3sh provided by the industrial mining network provides single point liquid level detection and TTL compatible push-pull output. The sensor consists of an infrared emission source and a detector, which are installed accurately to ensure good optical coupling between them in the air. When the conical end of the sensor is immersed in liquid, infrared light will be transmitted out of the conical surface, and the light intensity reaching the detector will become weaker. The LLC series photoelectric liquid level sensor (industrial grade, photoelectric water immersion sensor) is designed for industrial applications. Be competent for heavy load environment in industrial application. This series of products are suitable for power supply environment with wide voltage range, and the driving current can reach 250mA. Therefore, this series of sensors can directly drive alarm and other equipment.
Responsible editor; zl