Air Quality Multi-Sensor

MP-F series

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Single model NPT1/2 (15 A) MP-FN20

MP-FN20 - Single model NPT1/2 (15 A)

  • CE Marking
  • CSA





Single model

Connection bore diameter

NPT1/2" (15A)

Supported gases

Air and non-corrosive gases

Supported gas temperature

-5 to +50°C, 23 to 122°F

Operating pressure range

0.2 to 1 MPa, 2 to 10 bar, 29 to 145 psi *1

Pressure resistance

1.5 MPa, 15 bar, 217.5 psi

Flow rate

Detection principle

Heat based (mass flow rate)

Rated flow range (normal)

4 to 2000 L/min
0.2 to 120.0 m3/h 7.06 to 4237.76 ft3/h 0.1 to 70.6 CFM

Zero cut flow rate

4 L/min, 0.2 m3/h 7.06 ft3/h, 0.1 CFM

Measurement accuracy

±(1.5% of RD + 0.5% of F.S.) *2 *3


±1.0% of F.S. (with an averaging time of 1.0 s)

Display resolution

1 L/min, 0.1 m3/h 3.53 ft3/h, 0.1 CFM

Response time

150 ms (63% response) *4

Averaging time

OFF/100 ms/200 ms/500 ms/1.0 s/3.0 s/5.0 s/10 s/30 s (selectable)

Pressure (Digital value, gauge pressure)

Rated pressure range

0.000 to 1.000 MPa, 0.00 to 10.00bar, 0.0 to 145.0 psi

Measurement accuracy

±2.0% of F.S.


±0.2% of F.S. (with a response time of 50 ms)

Display resolution

0.001 MPa, 0.01 bar, 0.1 psi

Response time

Selectable from 10 ms, 50 ms, 100 ms, 500 ms, 1.0 s, and 5.0 s *4

Humidity (Dew point)

Rated relative humidity range/ dew point range

15 to 100%RH (no condensation)/Corresponds to the relative humidity range *5 *6

Measurement accuracy

±4°C, ±7°F *5 *6

Display resolution

5%RH/1°C, 1°F *5 *6


Measurement accuracy

±2.0°C, ±3.6°F *7

Display resolution

0.1°C, 0.1°F *7

Shut-off valve

Response time

1 s or less (closed → open)

Leakage amount

50 mL/min 0.002 CFM (N) or less

Filter/regulator (Standard model only)

Pressure adjustment range

Filtration degree

Drainage cup capacity

Check valve



Color LCD, status indicator

Data accumulation

Accumulation period

Accumulated data: approx. 2 years/Instantaneous data: approx. 2 weeks

Data reading

USB 2.0/Ethernet


Control output (Ch.1/2/3/4/5)

NPN/PNP setting switchable, open collector output 30 VDC or less, N.O./N.C. setting switchable, max. 100 mA/Ch., residual voltage: 2.5 V or less

Analog output (Ch.1/2)

4 to 20 mA, load resistance: 260 Ω or less *4

External input (Ch.2/3/6)

Short-circuit current: 1.5 mA or less, input time: 20 ms or more

Protection circuit

Power supply reverse connection protection, power supply surge protection, reverse connection protection for each I/O, surge protection for each I/O, overcurrent protection for each output

Power supply

Power voltage

24 VDC +25%/-20% (including ripple), Class 2 or LPS

Power consumption

1.2 A (300 ms) when opening/closing valve, 100 mA at all other times *8 (standalone usage; excluding load current)

Communication interface


Network compatibility

When using only this unit: IO-Link (Specification v1.1/COM3) *9
When connecting MP-FEN1 : EtherNet/IP®, PROFINET, Modbus/TCP, MC protocol/SLMP

Environmental resistance

Enclosure rating

IP67 (IEC60529) *10

Ambient temperature

−5°C to +50°C 23°F to 122°F (no freezing) *11

Relative humidity

35%RH to 85%RH (no condensation)

Vibration resistance

10 to 500 Hz; power spectral density: 0.204 G2/Hz; X, Y, and Z directions

Shock resistance

300 m/s2, XYZ axes, 10 times for each axis


Sensor part : PET/PPS/PBT/POM/aluminum/SPHC
Filter/regulator : Aluminum/POM/HDPE/NBR/Nylon *12


Approx. 1020 g 35.98 oz

*1 An upstream side pressure of 0.2 MPa or less (a filter/regulator adjustment pressure of 0.2 MPa or less for the standard model) worsens the flow rate characteristic of the shut-off valve.
*2 This value is guaranteed by KEYENCE inspection facilities while testing with air. Errors will be introduced by factors such as the gas type, gas temperature, and ambient temperature.
*3 Value in an environment with a constant temperature of 25°C 77°F and compressed air evaluated as purity class 1*1 (ISO 8573-1 (2010)/JIS B 8392-1 (2012)).±(5.5% of RD + 0.5% of F.S.) when equivalent to purity class 3*4.
*4 15 ms is added to the analog output response time.
*5 Measurable when at least 2% of F.S. worth of gas is flowing.
*6 The prescribed accuracy may not be met or the unit may be damaged if the compressed air contains a large amount of oil mist, organic solvent, or other gas. (For details, see “Gas Being Measured” on page 4.)
*7 When the flow is 5% of F.S. or higher. Errors due to heat generated by the main unit occur when the flow is too small.
*8 When connecting MP-FEA1 and/or MP-FEN1, add each device’s current consumption (2.1 A or less including load current).
*9 Use an IO-Link master that can supply 1.2 A or more. (1.6 A or less when connecting an MP-FEA1 and an MP-FEN1.) IO-Link is a registered trademark or trademark of PROFIBUS Nutzerorganisation e.V. (PNO).
*10 When protection is provided to prevent dust and liquid from intruding through the exhaust port. The IP67 enclosure rating is lost when a USB connection is established.
*11 If this product is used with a power supply voltage of 26.4 V or more, the upper limit on the ambient temperature is 45°C 113°F.
*12 Nylon is only used on the MP-Fx20R.

Data Sheet (PDF) Other Models