Mass Air Flow Sensor - PMF4000 Series

  • Mass Air Flow Sensor
  • Mass Air Flow Sensor
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• Unsurpassed performance in a robust and cost effective package
• Highly accurate (4% reading typ.)
• Fast response time (5 ms typ.)
• Linear output and temperature compensation
• Long-term stability with minimal null drift
• Wiring harness with pre-installed receptacle

  • Model Number: PMF4000 Series
  • Data Sheet: Date Sheet File
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Product Specification

PMF4000 Series Mass Air Flow Sensor Description:

    PMF4000 features 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 PMF4000 series includes the analog output PMF4000V and the digital I²C output PMF4000D.

    The supported max flow rates range from 12 SLM to 300 SLM. The sensors are temperature compensated over the temperature range of 0 to 50 °C. The linearized output provides maximum flexibility and ease-of-use.

 

PMF4000 Series Mass Air Flow Sensor Features

• Unsurpassed performance in a robust and cost effective package

•“Solid state” sensing core (no surface cavity or fragile membrane) 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

• Wiring harness with pre-installed receptacle

 

PMF4000 Series Mass Air Flow Sensor Applications

• Oxygen concentrators

• Respirators and ventilators

• Nebulizers

• CPAP equipment

• Anesthesia delivery

• Leak detection

• Spectroscopy

• Mass flow controller 

 

PMF4000 Series Mass Air Flow Sensor Maximum Ratings:

• Operating Temperature: -25 to 85 °C

• Calibrated Temperature Range: 0 to 50 °C

• Storage Temperature: -40 to 90 °C

• Humidity: 0 to 100% RH, non-condensing

• Shock: 100 g peak (5 drops, 3 axis)

• Operating Pressure: 25 psi

 

PMF4000 Series Mass Air Flow Sensor Specifications:

Test Conditions: Vin=10±0.01VDC, Ta=25°C. Relative Humidity: 40%

SPECIFICATIONS

MIN

TYP

MAX

UNIT

CONDITIONS

PMF4003

0

 

12

SLM

 

PMF4004

0

 

20

SLM

 

PMF4005

0

 

35

SLM

 

PMF4100

0

 

50

SLM

 

PMF4101

0

 

100

SLM

 

PMF4102

0

 

150

SLM

 

PMF4103

0

 

200

SLM

 

PMF4104

0

 

300

SLM

 

PMF4105

0

 

250

SLM

 

 

Output Voltage (V)2

1 to 5

VDC

 

Null Voltage (V)

0.95

1

1.05

VDC

 

Output Count (D)

256 to 16124

Count

 

Null Count

156

 

356

Count

 

Null Drif

 

 

0.2

% F.S

Per year

Repeatability

 

0.1

 

% F.S

 

Accuracy3

 

1%

 

F.S.

0 to 25% F.S.

 

4%

 

Reading

25 to 100% F.S.

Resolution (D)

 

14

 

Bit

 

Response Time4

 

5

 

mSec

 

Supply Voltage (V)

6

10

16

Vdc

 

Supply Voltage (D)

4.75

 

16

Vdc

 

Current

 

21

26

mA

 

Wetted Materials

Silicon carbide, epoxy, PPE+PE, FR4, and silicone as static seal

1. SLM: standard liter per minute. Standard conditions: 0 °C and 1 atmosphere.

2. V refers to the analog version of PMF4000, 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.



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