Pmf 5000 series
Medical equipment with air quality flow. Device
Annotations
Posifa designed the pmf 5000 series air quality flow sensor for portable medical equipment. The sensor is fast enough to measure the flow of pulsed gases. Small sensor size
Very suitable for space-limited applications. Push-in fast plugs to facilitate quick assembly. Existing products can customize the direction of the air flow (positive or reverse) as required by the customer。
The pmf 5000 series uses the latest third generation of thermal flow sensor chips of bosfatech and is manufactured using microprocessing techniques. The sensor chip uses a pair of thermoelectric dolls to detect changes in temperature gradients due to mass flow, with a noise ratio and repetitivity. The “solid” insulation structure on the sensor chip removes the surface cavity or fragile film used in the traditional product, so that the sensor chip is durable, avoids congestion and resists pressure shocks。
The pmf5000 series contains pmf5000v, which provides simulation output, and pmf5000d, which provides i2c digital output。
The pmf 5000 series is used extensively in united states medical equipment approved by fda and certified by ce。
Value
Working temperature: -25 -85 °c
Calibration temperature range: 0 to 50 °c
Storage temperature: -40 -90 °c
Humidity: 0 to 100% relative humidity, no condensation
Impact: 100 g peak (5 drops, 3 axes)
Work pressure: 25 psi
Characteristics
Use strong, high-value cover to achieve performance
Solid-state sensor chip (no surface cavity or fragile film)
It avoids jamming and resists pressure shocks
High precision (typical value: ±4%)
Rapid response time (typical value: 5ms)
Linear output and temperature compensation
Low zero drift, long-term stability
Push-in fast-plug interface
Customisation of air current direction as required by the client (positive or reverse)
Simulation output or digital i2c output
Approved and ce certified in fda, usa
The medical equipment was verified
Linear output description
For pmf 5000v
Flow speed = [(vout-1 v)/4 v]x full speed rate
For example, the pmf 50006v full flow rate is 15 slm. When the vout read 3 v
The current speed is: [(3 v-1 v)/4v] x 15 slm = 7. 5 slm。
For pmf 5000d
Flow speed = [(output reading-256)/15868] x full flow speed
For example, the pmf 50006v full flow rate is 15 slm. When the electronic output is 10,000
Flow speed: [10000-256)/1586] x 15 slm=9. 21 slm.
