Posifa Unveils PMF8300: High‑Precision Air‑Flow Sensors for Respiratory Care

Posifa Technologies, a trusted name in medical sensor solutions, has announced the launch of its PMF8300 series of mass‑air‑flow sensors. These new devices deliver superior accuracy, repeatability, and signal‑to‑noise performance compared with the company’s previous‑generation products, all while reducing cost.

Designed for compact, rugged applications, the PMF8300 sensors are critical components in ventilators, respirators, oxygen concentrators, nebulizers, and CPAP units. They precisely regulate airflow volumes to patients and also find use in spectroscopy and environmental monitoring equipment.

By pricing the PMF8300 series competitively, Posifa offers an affordable upgrade path for new equipment designs. At the same time, the company maintains availability of legacy lines such as the PMF4000, PMF2000, PMFc720, and PMFc40000 series. The simplified sensor architecture enables rapid scale‑up of production to meet sudden demand spikes.

Key to the series’ performance is Posifa’s third‑generation thermal flow die, built with cutting‑edge micro‑fabrication techniques. A pair of thermopiles detects temperature gradients caused by mass flow, providing an outstanding signal‑to‑noise ratio and a repeatability of 0.5% of full scale. The solid‑state thermal isolation eliminates the fragile membrane or surface cavity found in competing technologies, while a silicon carbide protective film ensures resilience against water condensation. This design also keeps packaging costs low.

The PMF8300 family measures flow rates from 15 SLM (PMF8315) to 100 SLM (PMF8399) with an exceptionally fast response time of 5 ms typical. Operating over a temperature range of –40 °C to 85 °C, the sensors provide both analog voltage and digital I²C outputs in a single package. Customization options, such as bidirectional flow sensing, are available upon request.

Samples and production quantities of the PMF8300 mass‑air‑flow sensors are available now. Contact Posifa to discuss custom specifications or order samples.

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