Posifa Launches PMF82000 Air Flow Sensors for Precision Control
Posifa’s PMF82000 MEMS mass air flow sensors provide accurate low-flow performance, fast 9 ms response, and easy integration for medical and industrial devices.
posifatech.com
Posifa Technologies has introduced its new PMF82000 series mass air flow sensors, combining accurate low-flow measurement with fast electrical response and a low pressure drop to help designers improve control loops and extend battery life in compact systems. The devices provide both analog and digital outputs in a small, robust package that integrates easily into oxygen delivery, respiratory care, and other flow-measurement applications.
The PMF82000 series leverages Posifa's thermal flow sensing technology for repeatable, precise readings across the range, with accuracy specified at 1 % of full scale from 0 % to 25 % FS and 4 % of reading from 25 % to 100 % FS. For tight closed-loop control, the sensors feature a typical flow response time of 9 ms, while their low pressure drop helps minimize burden on blowers and patient circuits. A 5 V supply and ~20 mA current draw simplify power budgeting in space-constrained designs.
Designed for straightforward integration, the sensors offer a 0.5 V to 4.5 V analog transfer function (with a corresponding digital count map) so engineers can compute flow directly from output, and include I²C digital communication (app note available from Posifa). For easy integration, the PMF82000 supports push-to-connect compatible fittings with a 6mm outside dimension (OD). Wetted materials are nylon, FR4, and silicone for sealing. The series supports over-pressure to 30 psi, operating temperature from -25 °C to +65 °C, and a warm-up time of 5 sec. The first product in the series, the PMF82010, provides a 10 SLM full-scale range.
Samples and production quantities of the PMF82000 series are available now through Posifa and authorized distributors.
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