{"product_id":"ultrasonic-liquid-level-monitoring-sensor-3m-ip67","title":"Ultrasonic Liquid Level Monitoring Sensor (3m, IP67)","description":"\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThis ultrasonic liquid level monitoring sensor is designed for non-contact liquid level detection where traditional ultrasonic sensors may be limited by large blind zones, wide measurement angles, slow response, or difficult installation. With a blind zone of ≤1.5cm and an adjustable measuring range from 30~300cm, this liquid level sensor supports compact containers as well as larger tanks while providing configurable measurement behavior for different installation conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38032-content1.webp?v=1791347667\" alt=\"\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1.5cm Blind Zone with Adjustable 30~300cm Measuring Range\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis ultrasonic liquid level sensor reduces the blind zone to ≤1.5cm, allowing measurement to begin much closer to the sensing surface. The maximum measuring range can be configured to any value from 30~300cm through commands, with a factory default of 200cm. This adjustable range helps adapt the sensor to containers and tanks of different depths without relying on a fixed full-scale measurement distance.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSix Algorithm Modes for Stable Liquid Surface Measurement\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis liquid level sensor integrates six underlying algorithm modes for different liquid conditions, including real-time value output, three-stage liquid surface sloshing filtering, small step filtering, and high sensitivity operation. Algorithm modes 0, 4, and 5 output real-time values with a response time of 100ms, while modes 1, 2, and 3 output processed values with a response time of ≥2000ms for more stable readings. Algorithm mode 1 is enabled by default, and the operating mode can be configured through the Modbus protocol.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38032-content2.webp?v=1791347699\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNine Configurable Signal Levels for Range and Viewing Angle\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis ultrasonic level sensor provides nine configurable signal levels from 1 to 9, with level 5 selected by default. Higher signal levels increase sensing sensitivity, measurable range, and detection angle, allowing the measurement behavior to be adapted to different tank dimensions and installation geometries. At the default level 5 setting, the measurable range reaches up to 200cm.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38032-content3.webp?v=1791347718\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFive Power Supply Noise Reduction Levels\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis liquid level monitoring sensor supports five configurable power supply noise reduction levels, with level 1 selected by default. The noise reduction function helps maintain measurement stability in electrical environments such as direct battery power, long-cable USB power supplies, and high-noise switching power supplies. Higher noise reduction levels provide stronger suppression while also having a greater influence on the viewing angle.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38032-content4.webp?v=1791347736\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eIP67 Protection with 3.3~12V Wide Voltage Operation\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis ultrasonic liquid level sensor combines an IP67 dustproof and waterproof enclosure with a wide 3.3~12V operating voltage range. Input and output interfaces integrate electrostatic discharge protection compliant with IEC61000-4-2 standards, with an electrostatic discharge protection rating of +4K\/8K (V). An operating temperature range from -25°C~65°C further supports liquid level monitoring across changing environmental conditions.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBlind zone as low as 1.5cm with adjustable maximum measuring range from 30~300cm\u003c\/li\u003e\n\u003cli\u003eSix configurable liquid level algorithm modes including liquid surface sloshing filtering, small step filtering, and high sensitivity mode\u003c\/li\u003e\n\u003cli\u003eNine configurable signal levels for adapting measurement range, sensitivity, and detection angle\u003c\/li\u003e\n\u003cli\u003eFive configurable power supply noise reduction levels for different electrical environments\u003c\/li\u003e\n\u003cli\u003eReal-time value output with 100ms response time and processed value output with response time ≥2000ms\u003c\/li\u003e\n\u003cli\u003eIP67 waterproof and dustproof protection for liquid level monitoring environments\u003c\/li\u003e\n\u003cli\u003eWide 3.3~12V operating voltage range\u003c\/li\u003e\n\u003cli\u003eElectrostatic discharge protection compliant with IEC61000-4-2 standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNutrient solution monitoring for hydroponics\u003c\/li\u003e\n\u003cli\u003eDisinfectant level monitoring in container\u003c\/li\u003e\n\u003cli\u003eNutrient solution monitoring for ornamental plant boxes\u003c\/li\u003e\n\u003cli\u003eWater level monitoring for RV water tanks and wastewater tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 3.3~12V\u003c\/li\u003e\n\u003cli\u003eStandby Current: ≤5uA\u003c\/li\u003e\n\u003cli\u003eAverage Operating Current: ≤9mA\u003c\/li\u003e\n\u003cli\u003eBlind Zone Distance: ≤1.5cm\u003c\/li\u003e\n\u003cli\u003eMeasuring Range: 30~300cm adjustable (default 200cm)\u003c\/li\u003e\n\u003cli\u003eAccuracy: 0.5+(S*0.3%)cm\u003c\/li\u003e\n\u003cli\u003eResponse Time: Real-time value 100ms, Processing value ≥2000ms\u003c\/li\u003e\n\u003cli\u003ePower-On Time: ≤650ms\u003c\/li\u003e\n\u003cli\u003eCycle Time: 100ms\u003c\/li\u003e\n\u003cli\u003eOutput Method: UART Auto (Modbus Protocol)\u003c\/li\u003e\n\u003cli\u003eTemperature Compensation: Yes\u003c\/li\u003e\n\u003cli\u003eAngle: 10~50°\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -25°C~65°C\u003c\/li\u003e\n\u003cli\u003eOperating Humidity: 65~80%RH\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: -30°C~80°C\u003c\/li\u003e\n\u003cli\u003eStorage Humidity: 65~90%RH\u003c\/li\u003e\n\u003cli\u003eElectrostatic Discharge Protection Rating: +4K\/8K (V)\u003c\/li\u003e\n\u003cli\u003eProtection Rating: IP67\u003c\/li\u003e\n\u003cli\u003eShell Material: PC Material\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping List\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUltrasonic Liquid Level Monitoring Sensor-3m ×1\u003c\/li\u003e\n\u003cli\u003e4PIN adapter cable x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0754\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":67582161354829,"sku":"E38032-001","price":60.12,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0668\/0641\/5437\/files\/E38032-win1.jpg?v=1791347779","url":"https:\/\/www.mlab.com.au\/products\/ultrasonic-liquid-level-monitoring-sensor-3m-ip67","provider":"MLAB","version":"1.0","type":"link"}