Product News: HVAC
Liquid Flow Sensors occupy 10 x 10 mm footprint.
Press Release Summary:
February 11, 2014 - Suited for medical/biomedical applications, LPP10 and LPG10 respectively feature glass and plastic packaging that enables thermal flow sensor microchips to non-invasively measure through wall of flow channel inside microfluidic planar substrate. With no moving parts or obstacles in fluid flow path, design provides sensitivity for liquid flow measurement and bubble detection from 0–1,000 µL/min. Flow sensing response time is 30 msec, and sensor resolutions can reach 0.5 nL/min.
Original Press Release
Incredibly Small Liquid Flow Sensors
Press release date: February 10, 2014
Innovative packaging enables Sensirion's highly sensitive thermal flow sensor microchips to measure non-invasively through the wall of a flow channel inside a microfluidic planar substrate. This design provides unique sensitivity for liquid flow measurement and bubble detection in the range of 0 to 1000 microliters per minute. The sensors are particularly suitable for monitoring flow rates and improving system performances in biomedical and life science applications.
Non-invasive flow sensing is possible thanks to the high sensitivity achieved with CMOSens® Technology. A small digital CMOSens® microchip (2.2 x 3.5 mm) is bonded to the microfluidic channel substrate. In addition to the sensor element, it houses the complete digital intelligence and the memory necessary for signal linearization, temperature compensation and self-test algorithms. The chip provides a fully digital I²C interface. Electrical contact is made via metallization above the microfluidic substrate. Fluidic ports below facilitate easy integration of discrete sensors into numerous designs. The sensor boasts a short flow sensing response time of 30 ms, and sensor resolutions down to 0.5 nl/min are feasible. A digital microsensor chip provides a fully calibrated digital output, eliminating the need for additional signal conditioning.
This significant simplification of liquid flow sensing technology enables extremely small and efficient sensor solutions. Customized solutions based on this technology can also be developed for various applications; standard versions are available immediately. For more information, please contact our sensor experts or visit www.sensirion.com/lpx.
Sensirion AG, headquartered in Staefa, Switzerland, is the world's leading manufacturer of digital microsensors and systems. The product range includes humidity and temperature sensors, mass flow controllers, gas and liquid flow sensors, and differential pressure sensors. An international network with sales offices in the USA, Germany, China, Japan and Korea supplies international OEM customers with tailor-made sensor system solutions for a vast range of applications. Among other things, these include analytical instruments, consumer goods and automobiles, as well as the medical and HVAC industries. One of the hallmark features of Sensirion products is the use of patented CMOSens® Technology. CMOS-based sensor elements and systems permit intelligent system integration, including calibration and a digital interface. Sensirion's credentials as a reliable OEM supplier are underscored by its ISO/TS 16949 certification.
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