Sensirion releases next-generation liquid flow sensor with diagnostic applications

The new product variant promises biodirectional measurement of flow rates up to ±3000 µl/min

19 Apr 2020
Diane Li
Assistant Editor

Sensirion, a leading manufacturer of flow and environmental sensors, has announced a new product variant in the SLF3x series: the SLF3S-0600F liquid flow sensor. The SLF3S-0600F is said to measure very low flow rates bidirectionally up to ±3000 µl/min and offer the same impressive features as the existing SLF3S-1300F sensor. This makes the new sensor suitable for a wide range of applications in diagnostics, analytical instruments and life sciences. The first prototype samples of the SLF3S-0600F are now available for testing. The new product variant will be available for distribution in the second half of 2020.

The SLF3x is Sensirion’s latest innovation in liquid flow sensing. Based on Sensirion’s excellent 20-year track record in low and lowest flow rate sensing, the radically optimized mechanical design of the SLF3x takes an already well-established functionality to the next level in terms of price-performance ratio. The sensors in the SLF3x series are based on Sensirion’s CMOSens® Technology and optimize costs by simplifying the design without sacrificing performance or having to forgoing any user-friendly fluidic, electrical and mechanical connections.

The new sensor allows for the bidirectional measurement of flow rates up to ±3000 µl/min for both water and hydrocarbon-based fluids. In combination with its excellent signal-to-noise ratio and unprecedented turndown ratio of 300:1, it allows real-time monitoring of any fluidic system, which improves process control and enables advanced failure detection. The straight, unobstructed flow channel has no moving parts and is made from inert wetted materials that provide outstanding chemical resistance and excellent media compatibility.

The SLF3x sensor series provides an unparalleled level of fluid control, system reliability, performance and end-user satisfaction for a range of applications in the fields of diagnostics, analytical instruments and life sciences. The ultra-compact form factor and cost-effective design pave the way for system designs featuring one or more sensors, which were previously unfeasible. The first prototype samples of the SLF3S-0600F are now available for testing, the new product variant will be available for distribution in the second half of 2020.​​​​​​

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Mass Flow Meter SFM5400

Sensirion

The SFM5400 mass flow meter measures mass flows with outstanding accuracy (errors < 1%), long-term stability and repeatability and covers an impressively wide dynamic measurement range. The SFM5400 is made of metal and highly configurable. It is available with a variety of fluidic connections and various interfaces and measures maximum flow rates between 50 sccm and 100 slm. The sensor signal is directly converted into a digital, completely calibrated and temperature-compensated signal on the chip.  Multiple gas calibrations can be stored on a single device. Additionally, the flow meter can check whether the activated gas calibration matches the actual gas present. The SFM5400's versatility makes it the ideal solution for industrial and medical applications. The outstanding performance of the SFM5400 mass flow meter is based on the innovative CMOSens® Technology, which integrates the high-precision sensor element and the analog and digital processing electronics on a single CMOS silicon chip. Combined with high-quality materials, the result is a durably stable, extremely fast and highly precise mass flow meter. The SFM5400 mass flow meter is the valve-free version of the SFC5400 mass flow controller. The SFC5400 mass flow controller has the same performance characteristics as the mass flow meter and is used in similar applications, and the two products can be ideally combined. You can find further information and detailed specifications about the mass flow controller on the SFC5400 website. Features High accuracy at low flow rates (< 1 sccm) Excellent accuracy / repeatability (0.8% / 0.1% of measured value respectively) Wide dynamic range (turndown ratio 1000:1) Multiple gases and gas recognition Digital and analog interfaces Flexible mechanical connection options: down mount, VCR and VCO, Swagelok, C-/W-Seal, etc. Highly configurable MTBF 169 years - no recalibration required

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Sensirion releases next-generation liquid flow sensor with diagnostic applications