Product Description Intelligent non-contact liquid level sensor/detector (below: water level sensor/detector) which uses advanced signal processing technology and high-speed signal processing chip, the thickness of the container is important for measurement Levels will be less relevant, and high levels of sealed containers, for truly non-contact measurements.
The level sensor (detector) will be installed on the top/bottom of the outer container (high level and low level), it is useless to drill a hole in a non-metallic container, the installation is very simple.
This measuring level sensor is the most ideal sensor for various toxic substances, strong acids, strong alkalis and various liquids in high pressure sealed containers. There are no special requirements for liquid media and material containers, and are widely used.
Product Features 1: Non-contact liquid level sensor for non-metallic wall said containers are not in direct contact with liquids, they are not subject to scaling effects of corrosive acids and alkalis and other corrosive liquids, or other debris.
2: Intelligent memory function and level adjustment level, status display level, multi-point serial connection; support NPN output, PNP output,
3: The detection is accurate and stable, able to detect the level of boiling water
4: Pure structure of electronic circuits, non-mechanical work, life and stable performance.
5: High stability, high sensitivity, strong interference ability, no external electromagnetic interference, there is a special treatment for frequency interference common mode noise, compatible with all 5—24 V power adapters in the market.
6: Strong compatibility, can penetrate various non-metal containers, such as plastic, glass, ceramics and other containers, the sensing distance can reach more than 10mm; liquid, powder, particles can be detected.
7: Open collector output, wide voltage range (5 V-12 V) (24 V) suitable for connecting various circuits and applications.
Technical parameters Voltage input (InVCC): [DC 5—12 V] [DC24V] Power consumption: 200 uA output current; 1—100mA Response time: 500 mS Working temperature: 0—100 degrees Thickness sensing (sensitivity) range: 0—20mm Humidity: 5%—100% material container; plastic, glass, ceramic and other containers Sensor protection: IP67
Operation principle The detection of the intelligent non-contact liquid level detector is to use the capacity in the water to detect whether there is liquid.
When liquid enters the detector which is static due to the distributed capacitance in the detector.
When the level When increasing the proximity to the detector, the increase in the parasitic capacitance of the liquid will couple to this static capacity, and finally the capacitance value of the detector will become larger.
This changewill change the ability to convert some signal changes when the IC input capacitance signal converts the signal , and then A certain algorithm is used to detect and determine the measure of the amount of change when the change exceeds a certain threshold level to reach the sensor point.
Clearance requirements Between the contact surface of the sensor (or probe) and the outer wall of the container, it is best to use AB glue or other strong curing glue to stick firmly, if there are special requirements, the gap should be less than 0.5mm, preferably no gap, otherwise it may be Affect measurement accuracy.