As the leading manufacturer of sensors for the measurement and control of flow and environmental parameters, Sensirion will present the brand new mass flow meter SFM4300 at this year’s Compamed in Düsseldorf. Thanks to its newly developed flow channel geometry, the sensor is able to precisely measure oxygen (O2) and laughing gas (N2O) in addition to air for the first time. The small sensor is thus excellently suited to the measurement of gas mixtures in the medtech sector.

November 2019, Sensirion AG, 8712 Stäfa, Switzerland

Compared to its predecessor, the SFM4100, the SFM4300 features improved sensitivity and is extremely precise when measuring mass flow, even at low flow rates. The SFM4300 is small and very pressure-resistant, measures mass flows of up to 20 slm (air, O2 and N2O) and is available with various mechanical connections (downmount, Legris and O-rings). The sensor unit, which was developed for integration into anesthesia devices among other applications, has an I²C interface and provides a fully calibrated and temperature-compensated output signal.

“The SFM4300’s performance characteristics make it the ideal solution for controlling gas mixtures in the medtech sector. It enables the mixing of very precise concentrations even at low flow rates,” says the leading product manager, Daniel Träutlein. According to Dr. Träutlein, the sensor will primarily be used in anesthesia devices and is usually integrated directly into the device. To ensure patient safety, the flow sensors in the machine need to be stable and reliable for exact, reproducible measurements – throughout the entire service life of the device. The SFM4300 is therefore the top choice when it comes to safety and reliability. Customers also benefit from an expanded measurement range of up to 20 slm.

Samples of the mass flow meter SFM4300 are available for testing in initial larger projects. Please contact Sensirion at [email protected] for more information. The sensor is expected to be launched on the market in the second quarter of 2020. The sensor will then be available worldwide via official Sensirion distributors.

Come and visit Sensirion from November 18 to 21, 2019 in Düsseldorf at the Compamed trade fair (Hall 8a, Stand H19.6) and find out more about the new SFM4300. More information is available at

About Sensirion – Experts for Environmental and Flow Sensor Solutions

Headquartered in Stäfa, Switzerland, Sensirion AG is a leading manufacturer of digital microsensors and systems. Its product range includes gas and liquid flow sensors, differential pressure sensors and environmental sensors for the measurement of humidity and temperature, volatile organic compounds (VOC), carbon dioxide (CO2) and particulate matter (PM2.5). An international network with sales offices in the USA, Europe, China, Taiwan, Japan and Korea supplies international customers with standard and custom sensor system solutions for a wide range of applications. Sensirion sensors are commonly used in the medical, industrial and automotive sectors, and in analytical instruments, consumer goods and HVAC products.

One of the hallmark features of Sensirion products is the use of its patented CMOSens® Technology, which allows for intelligent system integration of the sensor element, logic, calibration data and digital interface on a single chip. Sensirion's credentials as a reliable supplier are evident from its loyal customer base, reputation for quality (ISO/TS 16949) and excellent customer pedigree.

Contact:, [email protected], Tel. +41 44 306 40 00, Fax +41 44 306 40 30