Flow sensor PMF83000

oxygenmedicalmonitoring

PMF83000 is Posifa Technologies’ nextgeneration of mass air flow sensors for respiratory care and other medical and instrumentation applications. Compared to our previous generation solution, the PMF83000 Series offers improved accuracy, repeatability, and signal-to-noise performance. The PMF83000 series features Posifa’s thirdgeneration thermal flow die, benefiting from the latest innovations in microfabrication. The sensor die uses a pair of thermopiles to detect changes in temperature gradient caused by mass flow, delivering excellent signal-to-noise, and repeatability. The “solid state” thermal isolation structure eliminates the need for the surface cavity or fragile membrane used in competing technologies. In addition the entire sensor PCB assembly is coated with parylene, including the sensor die. This extra level of protection allows the sensor to perform reliabily in harsh environments such as high humidity and trace amount of corrosive gases. The PMF83000 sensors provide both voltage and digital I2C outputs, and support bidirectional flow measurement. APPLICATIONS • Oxygen concentrators • Respirators and ventilators • Nebulizers • CPAP equipment • Anesthesia delivery • Environmental monitoring • Fuel cell control FEATURES • Compact footprint • Accurate and low noise • Fast response time • Resistant to condensed water and dust particles • Long-term stability • Bidirectional flow sensing (optional) • Analog and I2C, Linear output MAXIMUM RATINGS • Operating Temperature: -25°C to 65°C • Compensated Temperature: 0°C to 50°C • Storage Temperature: -25°C to 70°C