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David Austin
Worked at http://www.posifamicrosystems.com
Lived in 1925 Zanker Road
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POSIFA Microsystems Inc. specializes in providing high-performance and economical MEMS sensors to OEM customers worldwide.
Introduction
At Posifa, we continue to develop new Sensor and Transducer products that offer unprecedented cost/performance benefits, leveraging our proven MEMS Sensor Dies, and packaging and sensor electronics expertise.  At the same time we are expanding the technological foundation of our company by continuing to bring to market new MEMS sensor innovations. 

  
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Posifa’s PMFc3000 series Mass Airflow Sensors offer pin compatible upgrade solutions to the popular AWM3000 series from Honeywell. Using the robust Posifa Thermal Flow Sensor Die, and incorporating the latest microcontroller technology, PMFc3000 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 AWM3000.

Tailored to meet the exacting packaging and calibration specifications of AWM3000, PMFc3000 also offers enhanced interchangeability by improving the output tolerance by 200% to < 2% full scale. Additionally, PMFc3000 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%.

Posifa designed the PMFc3000 series of mass airflow 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 toclogging (from water vapor or dust particles) and pressure shock. The sensor’s signal conditioning circuitry leverages off-the-shelf micro controller, providing proven reliability and low cost.
 
Applications in medical, industrial and transportation industries are benefiting by:
 
•  Taking advantage of tighter tolerances 
•  Eliminating complicated and expensive temperature compensation schemes 
•  Inherent immunity to adverse environmental fac-tors

If you are interest to know more about us then visit:http://www.posifamicrosystems.com/about_us.php
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1925 Zanker Road - San Jose - 95112 CA