Liquid flow sensor 'SLF3S-4000B'
Covers a wide measurement range from nL to L/min! A new level of liquid flow sensing.
The "SLF3S-4000B" is a liquid flow sensor with a maximum liquid flow rate of 600ml/min. It can be used with the same look and feel as the existing SLF3x flow sensor product line, and users can continue to read data using existing cables or software without customization, eliminating the need for software reprogramming. The portfolio covers a variety of applications, making it suitable for customers who want to adopt sensor technology that allows a single specialist to operate automation solutions and fluid systems. 【Specifications (partial)】 ■ Full-scale flow rate (H2O): 600ml/min ■ Accuracy (H2O): 5% ■ Repeatability (H2O): 0.5% ■ Full-scale flow rate (IPA): 600ml/min ■ Accuracy (IPA): 10% *For more details, please download the PDF or feel free to contact us.
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【Other Specifications】 ■ Repeatability Accuracy (IPA): 0.5% ■ Maximum Operating Pressure: 3bar ■ Fluid Connector Port: Barb Fitting ■ Supply Voltage: 3.2 - 3.8V ■ Maximum Supply Current: 6mA ■ Interface: I2C, RS485 ■ Size (LxWxH): 48 x 15.5 x 8.6mm *For more details, please download the PDF or feel free to contact us.
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For more details, please download the PDF or feel free to contact us.
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Exhibited at Smart Sensing 2026.
Sensirion exhibited at the "Automotive Technology Exhibition 2026," held at Tokyo Big Sight from June 10 (Wednesday) to June 12 (Friday), 2026. At this exhibition, we showcased sensor solutions for automotive applications, in addition to environmental sensing and flow sensing. We also presented various measurement demonstrations and new products for the first time at the exhibition, allowing many visitors to see the performance and technological capabilities of our products. We would like to express our heartfelt gratitude to all the attendees. 【Main Demonstration Exhibits】 SCD5x New CO2 Sensor SGD4x Refrigerant Detection Sensor SEN6x Indoor Air Quality Combo Sensor Module SLF3x Liquid Flow Sensor Integrated Combo Module for HVAC (SAEN6) Refrigerant (Propane) Leak Detection Sensor Module (SACD4) Window Fog Detection Sensor Module (SAAF4)
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Liquid flow monitoring in pump control - Early detection of wear, backflow, and clogging.
Pumps installed in analytical devices and laboratory equipment are important components responsible for the precise supply and injection of liquids. However, wear from long-term use, blockages in the piping, and backflow can lead to risks such as flow rate variability, measurement errors, and unexpected device shutdowns. To address these issues, sensing technology that monitors liquid flow in real-time is effective. By utilizing liquid flow sensors, preventive maintenance and condition monitoring can be achieved, including: ■ Detection of pump wear and valve vibrations - High-sensitivity detection of subtle noise and vibrations ■ Detection of backflow - Understanding reverse flow to analyze causes of efficiency decline and malfunctions ■ Early detection of blockages - Capturing flow rate decreases to reduce equipment damage and downtime For such applications, the following liquid flow sensors are recommended: ■ LG16 Series: Suitable for high-precision measurement of micro flow rates, ideal for pump control in analytical devices and laboratory equipment ■ SLF3S Series: Compact and fast-response design for quick detection of signs of wear and blockages For more details on liquid flow sensors and compatible products, please refer to the product page or catalog.
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Sensirion's mission is to provide sensors and sensor solutions with excellent design and reliability, becoming the number one partner for our customers. We aim to elevate the standards of sensor technology by leveraging technology intelligence. In doing so, we contribute to improving the sustainability, efficiency, health, safety, and quality of life for people and businesses. We pursue a common goal of shaping the future of the automotive industry, industrial sectors, building and HVAC technology, medical technology, and consumer electronics through innovation in collaboration with our partner companies and customers. Sensirion was founded in 1998 and currently has about 1,000 employees at its headquarters in Stäfa, Switzerland, and numerous subsidiaries around the world.