Posifa Technologies
Posifa Technologies product portfolio consists of gas and liquid flow sensors, air velocity sensors, and vacuum sensors. Our flow sensors can be found in demanding applications from medical ventilators and oxygen concentrators to the mass flow controllers used in fuel cell generators and semiconductor equipment.
Contact our team at PMT and test Posifa’s sensors in your applications with samples in stock – click here!
Posifa Technologies' Product Categories
Posifa Technologies provides high performance, low-cost, MEMS sensing solutions that address some of the toughest design challenges in consumer electronics, HVAC, medical devices, data centers, and many other industries.
Posifa Air Velocity Sensor
Mass Air Flow Sensors
A2L Refrigerant Sensor
Hydrogen Sensor
Vacuum Gauges
Vacuum Sensors
Posifa Technologies
If you have unique requirements, our fabrication technology and supply chain allow us to provide customization at relatively low quantities. And our responsive customer service and support deliver quick answers to your questions and resolve any issues throughout your manufacturing process and product lifecycle.
FAQs
What does Posifa Technologies specialize in?
Posifa Technologies designs and manufactures MEMS-based thermal sensing solutions for measuring mass flow, gas concentration, vacuum pressure, and air velocity across diverse industries — including medical oxygen therapy, hydrogen energy, HVAC/refrigeration, and industrial process control.
Our proprietary MEMS platform integrates a micro-heater, temperature-sensing thermopiles, and calibration circuitry onto a single silicon die. This monolithic design eliminates moving parts, ensuring millisecond-level response time, repeatable accuracy, and long-term drift < 0.5% F.S., even under high humidity and pressure cycling.
Where are Posifa sensors designed and manufactured?
All Posifa MEMS die and modules are developed at our Silicon Valley R&D headquarters, with production through ISO 9001 and UL certified labs in Asia.
This ensures full traceability and supply-chain scalability for customers in medical, hydrogen, and energy verticals.
How do Posifa sensors compare with ultrasonic transit-time sensors in POCs
Ultrasonic sensors measure transit time differences of acoustic pulses. While they can sense both O₂ concentration and flow, they suffer at low-flow regimes and high humidity.
In contrast, Posifa’s MEMS thermal architecture:
- Directly measures mass flow, independent of gas type correction factors.
- Operates reliably under condensation or vibration.
- Consumes < 30 mA power, ideal for battery-powered POCs. Ultrasonic sensors remain advantageous for dual measurement (O₂ + flow) — a capability Posifa is integrating into its next-generation module launching by end of 2025.