Product Attribute:
Applicationt:
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Production Description:
PMF5000 Series Mass Air Flow Sensor for Medical Devices Description
Posifa designed the PMF5006 series of mass air flow sensors specifically for portable medical devices. The sensor is fast and accurate, enabling the precise amount of gas to be delivered in a pulse mode. The sensors small footprint fits nicely inside a spaceconstrained housing. The stress-relieved wiring harness with pre-installed receptacle provides reliable electrical connection to the circuit board. The flow direction (forward or backward) can be customized to work with an existing system layout.
PMF5006 features Posifas third-generation thermal flow die, benefiting from the latest innovations in microfabrication. The sensor die uses a pair of thermopiles to detect changes in temperature gradient caused by mass flow, delivering excellent signal-to-noise, and repeatability. The solid state thermal isolation structure on the sensor die eliminates the need for surface cavity or fragile membrane used in competing technologies, making the sensor resistant to clogging and pressure shock.
The PMF5006 series delivers a linearized and temperature compensated analog voltage output.
The PMF5000 series is a proven product that has been used in quantity in FAA approved, FDA cleared, and CE certified medical devices.
PMF5000 Series Mass Air Flow Sensor for Medical Devices Features
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Unsurpassed performance in a robust and cost effective package
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Solid state sensing core (no surface cavity or fragile membrane) resistant to clogging and pressure shock
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Highly accurate (4% reading typ.)
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Fast response time (5 ms typ.)
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Linear output and temperature compensation
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Long-term stability with minimal null drift
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Elbow barb fittings*
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Wiring harness with pre-installed receptacle
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Flow direction can be changed (forward or backward) per customer request
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Analog or digital I2C output
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Proven in FAA approved, FDA cleared. and CE certified medical devices
* Custom fittings available
PMF5000 Series Mass Air Flow Sensor for Medical Devices Maximum Ratings
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Operating Temperature: -25 to 85 °C
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Calibrated Temperature Range: 0 to 50 °C
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Storage Temperature: -40 to 90 °C
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Humidity: 0 to 100% RH, non-condensing
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Shock: 100 g peak (5 drops, 3 axis)
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Operating Pressure: 10 psi
PMF5000 Series Mass Air Flow Sensor for Medical Devices Specifications
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Test Conditions: Vin=10±0.01VDC, Ta=25°C. Relative Humidity: 40% |
|
SPECIFICATIONS |
MIN |
TYP |
MAX |
UNIT |
CONDITIONS |
|
PMF5006 |
0 |
|
15 |
SLM |
|
|
PMF5007 |
0 |
|
20 |
SLM |
|
|
PMF5008 |
0 |
|
40 |
SLM |
|
|
PMF5009 |
0 |
|
60 |
SLM |
|
|
|
|
Output Voltage (V)2 |
1 to 5 |
VDC |
|
|
Null Voltage (V) |
0.95 |
1 |
1.05 |
VDC |
|
|
Output Count (D) |
64 to 4031 |
Count |
|
|
Null Count |
24 |
|
104 |
Count |
|
|
Null Drif |
|
0.5 |
|
% F.S |
|
|
Repeatability |
|
0.2 |
|
% F.S |
|
|
Accuracy3 |
|
1% |
|
F.S. |
0 to 25% F.S. |
|
|
4% |
|
Reading |
25 to 100% F.S. |
|
Resolution (D) |
|
12 |
|
Bit |
|
|
Response Time4 |
|
5 |
|
mSec |
|
|
Warm Up Time |
|
|
30 |
mSec |
|
|
Supply Voltage |
6 |
10 |
16 |
Vdc |
10V recommended |
|
Supply Current |
|
22 |
|
mA |
at 10 VDC supply |
|
Wetted Materials |
Silicon carbide, Epoxy, Nylon (fittings), PPE+PE (main housing), FR4. |
1. SLM: standard liter per minute. Standard conditions: 0 °C and 1 atmosphere.
2. V refers to the analog version of PMF5000, and D refers to the digital I2C version.
3. Maximum deviation in output from nominal over the entire calibrated flow range and temperature range. Errors include offset, full
scale span, linearity, flow hysteresis, repeatability and temperature effects over the compensated temperature range.
4. 10% to 90% rise time of the flow sensor to electrically respond to any mass flow change. May be affected by the pneumatic interface.