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The CQRobot non-contact liquid level sensor realizes non-contact detection of the liquid level in a closed container. It adopts advanced signal processing technology and high-speed signal processing chip, breaking through the influence of container wall thickness. It is simple to install and easy to use, and can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure airtight containers.
The principle is to use the inductive capacitance of water to detect whether there is liquid. When there is no liquid close to the sensor, the sensor has a certain static capacitance to the ground due to the existence of distributed capacitance on the sensor. When the liquid level slowly rises and approaches In the case of an inductor, the parasitic capacitance of the liquid will be coupled to this static capacitance, making the final capacitance value of the inductor larger.
The changed capacitance signal is then input to the control IC for signal conversion, which converts the changed capacitance into a change of a certain electrical signal, and then a certain algorithm is used to detect and judge the degree of this change. When the change exceeds a certain amount It is considered that the liquid level has reached the sensing point when the threshold is reached.
High stability, high sensitivity, strong interference ability, no external electromagnetic interference, special treatment for power frequency interference and common mode interference, strong compatibility, penetration of various non-metallic containers, such as plastic, glass, For ceramics and other containers, the sensing distance can reach more than 12mm; liquid, powder, and particulate matter can be detected.
The sensor comes with 2 DIP switches, the right DIP switch controls the output voltage (high level) of the signal terminal (green line); when the DIP switch is dialed up, the high level is 5V; when the DIP switch is facing When dialing down, the high level is 3.3V. Compatible with Arduino, Raspberry Pi and Other Motherboards.
The CQRobot non-contact liquid level sensor realizes non-contact detection of the liquid level in a closed container. It adopts advanced signal processing technology and high-speed signal processing chip, breaking through the influence of container wall thickness. It is simple to install and easy to use, and can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure airtight containers. The sensor comes with 2 DIP switches, Compatible with Arduino, Raspberry Pi and Other Motherboards. â Note: For technical support, please refer to CQRobot Wiki to get the test code, SKU: â âââCQRSENYW001.
Sensor Probe and Adapter Specifications - Input Voltage: DC 5V - Current Consumption: 5mA - Output Voltage (High Level): 3.3V or 5V (Right Dial Switch Control) - Output Voltage: 0 - Output Current: 1mA to 50mA - Response Time: 500ms - Working Environment Temperature: 0 to 105 Degree Celsius - Induction Thickness (Sensitivity) Range: 0 to 13 mm - Humidity: 5% to 100% - Material: ABS - Waterproof Performance: IP67 - Dimension: 31.6mm * 30mm - Mounting hole size: 3.0mm Ocean interface Cable Specifications - Cable Specifications: 22AWG - Material: Silicone - Length: 21cm - Withstand Voltage: Less Than 50V - Withstand Current: Less Than 1000MA - Line Sequence: Black-Negative Power Supply, Red-Positive Power Supply, Green-Signal.
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