Posifa Technologies has launched its new PMF82000 series mass air flow sensors, designed to deliver precise low-flow measurement with quick response times and minimal pressure drop. These features enable engineers to enhance control performance and extend battery life in compact systems. The sensors offer both analog and digital output options and come in a durable, compact package, making them ideal for applications such as oxygen delivery systems, respiratory care equipment, and other flow measurement devices.
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.
