SFM3400-33-AW

Datasheet SFM3400-AW Preliminary Datasheet SFM3400-D Digital Flow Meter for Neonatal/Pediatric Medical Applications      Flow range: ± 33slm (bidirectional) Small dead space < 1ml Re-use (-AW) version Preliminary single-use (-D) version Very fast update time (0.5ms) Product Summary The SFM3400 sensor series is Sensirion’s digital flow meter designed for neonatal/pediatric medical applications. It measures the flow rate of air, oxygen and other nonaggressive gases with superb accuracy. The special design of the flow channel results in a very small dead space. The SFM3400-AW is designed for multiple use with the ability to withstand autoclave procedures. The single-use version SFM3400-D is in development stage with preliminary specifications identical to SFM3400-AW. Therefore, the SFM3400 series is extremely well suited for proximal flow measurements in neonatal/pediatric medical ventilation and other respiratory applications. Applications      The SFM3400 series has been designed with the use by medical professionals in mind. It features medical cones for pneumatic connection to standard breathing circuits and a mechanical interface for easy and reliable electrical reconnection. The sensor element, signal processing and digital calibration are on a single microchip assuring very fast signal processing time, best-in-class accuracy and superior robustness to rough handling and adverse conditions. The well-proven and patented CMOSens® sensor technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and costsensitive OEM applications. Sensor chip Proximal flow measurement for infants / neonates Expiratory flow measurement for infants / neonates Ventilation & Anesthesia for infants / neonates Respiratory measurements for infants / neonates Metabolic Measurements for infants / neonates The SFM3400 flow meter features a fifth-generation silicon sensor chip. In addition to a thermal mass flow sensor element, the chip contains an amplifier, A/D converter, EEPROM memory, digital signal processing circuitry, and interface. Due to seamless integration of signal acquisition and processing on the single silicon die significant performance and cost benefits are achieved. OEM options A variety of custom options can be implemented for highvolume OEM applications (custom flow rates, calibration for other gases, different body form factor, disposable option etc.). Contact us for more information. www.sensirion.com Version 1.0 – July 2017 1/7 1.1 Physical Specifications Parameter Flow Range Accuracy Unit slm 2 -33 … +33 4, 8 Typical ±3 5 ± 0.02 5 0.5% 9 0.005 9 Max 3 ±10 6 ± 0.05 3.5% 0.025 % m.v.7 slm 2 % m.v 7 slm 2 span offset span offset 0.06 9 0.005 9 1% 0.01 0.2 0.01 % m.v./ 10˚C slm / 10°C % m.v. 7 slm 2 @ 5 slm @ 10 slm @ 25 slm 100 / 0.4 9 250 / 1.0 9 900 / 3.6 9 150 / 0.6 300 / 1.2 1500 / 6.0 Pa / inH2O Pa / inH2O Pa / inH2O span