PMF5000 Mass Air Flow Sensor for Medical Devices
The PMF5000 series is designed specifically for portable medical devices. It delivers fast, accurate measurement to enable precise pulse‑mode gas delivery in a small footprint that fits space‑constrained housings. Push‑to‑connect fittings support efficient assembly, and the flow direction (forward or backward) can be customized to match existing system layouts. The series uses Posifa’s third‑generation thermal flow die.
Key Specifications and Benefits:
- Unsurpassed performance in a robust and cost-effective package
- Solid-state sensing core (no surface cavity or fragile membrane) is resistant to clogging and pressure shock
- Highly accurate (4 % reading typ.)
- Fast response time (5 ms typ.)
- Linear output and temperature compensation
- Long‑term stability with minimal null drift
- Push‑to‑connect fittings
- Flow direction can be changed (forward or backward) per customer request
- Analog or digital I2C output
- Proven in FAA-approved, FDA-cleared and CE-certified medical devices
Absolute Maximum Ratings / Operating Limits
- Operating temperature: −25 °C to 85 °C
- Calibrated temperature range: 0 °C to 50 °C
- Storage temperature: −40 °C to 90 °C
- Humidity: 0 % to 100 % RH, non‑condensing
- Shock: 100 g peak (5 drops, 3 axis)
- Operating pressure: 25 psi
- Supply: 5 V (typ.), ~20 mA