Flow sensor PMFc720P1

medical

Posifa’s PMFc700 series of Mass Air Flow Sensors offer pin compatible upgrade solutions to the popular AWM700 series from Honeywell. Using the robust Posifa Thermal Flow Sensor Die, and incorporating the latest microcontroller technology, PMFc700 offers drastically improved interchangeability (< 2% full scale), temperature stability (< 3% full scale from 0°C to +50°C), and resistance to adverse environmental factors such as dust particles and water vapor that have plaqued the AWM700. Tailored to meet the exacting packaging and calibration specifications of AWM700, PMFc700 also offers enhanced interchangeability by improving the output tolerance by over 200% to < 2% full scale. Additionally, PMFc700 is temperature compensated to < 3% full scale drift over the temperature range of 0°C to +50°C. For those more stringent applications, Posifa offers other precision versions with output tolerance as low as 1.5%. Posifa designed the PMFc700 series of Mass Air Flow Sensors from the ground up, incorporating the latest MEMS and microelectronics innovations. The sensor die uses a pair of thermopiles to detect changes in temperature gradient caused by mass flow, delivering ultra-low noise to signal, and unsurpassed repeatability. The “solid state” thermal isolation on the die eliminates the need for surface cavity or fragile membrane, making the sensor resistant to clogging (from water vapor or dust particles) and pressure shock. The sensor’s signal conditioning circuitry leverages off-the-shelf microcontroller, providing proven reliability and low cost. Applications in medical, industrial and transportation industries are benefiting by: Taking advantage of tighter tolerances