Product Details Portlet

D6F-A1 MEMS Flow Sensor

A Compact, High-accuracy Sensor That Measures Low Flow Rates.

  • High accuracy of ±3 FS.
  • Flow rates can be measured without being affected by
    temperature or pressure.
RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
* External site (Ultra Librarian) opens in a new window.
D6F-01A1-110 Download Download
D6F-02A1-110 Download Download
(*) Ultra Librarian uniquely created ECAD data based on the information provided by OMRON. Please note that OMRON does not guarantee the accuracy, concurrence or completeness of ECAD data.
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
(Please contact to local OMRON representatives for delivery.)
Applicable fluid
Flow rate range
Air 0 to 1 L/min D6F-01A1-110
0 to 2 L/min. D6F-02A1-110
Flow Range (See note 1.) 0 to 1 L/min 0 to 2 L/min.
Calibration Gas (See note 2.) Air
Flow Port Type Barb joint
Maximum outside diameter: 8.6 mm, Minimum outside diameter: 7.4 mm
Electrical Connection Three-pin connector
Power Supply 10.8 to 26.4 VDC
Current Consumption 15 mA max with no load, with a Vcc of 12 to 24 VDC, and at 25°C
Output Voltage 1 to 5 VDC (non-linear output, load resistance of 10 kΩ)
Accuracy ±3% FS (25°C characteristic)
Repeatability (See note 3.) ±0.3% FS
Output Voltage (Max.) 5.7 VDC (Load resistance: 10 kΩ)
Output Voltage (Min.) 0 VDC (Load resistance: 10 kΩ)
Rated Power Supply Voltage 26.4 VDC
Rated Output Voltage 6 VDC
Case PPS
Degree of Protection IEC IP40 (Excluding tubing sections.)
Withstand Pressure 200 kPa
Pressure Drop (See note 3.) 0.42 kPa 1.06 kPa
Operating Temperature (See note 4.) −10 to 60°C
Operating Humidity (See note 4.) 35% to 85%
Storage Temperature (See note 4.) −40 to 80°C
Storage Humidity (See note 4.) 35% to 85%
Temperature Characteristics ±3% FS for 25°C characteristic at an ambient temperature of −10 to 60°C
Insulation Resistance Between Sensor outer cover and lead terminals: 20 MΩ min. (at 500 VDC)
Dielectric Strength Between Sensor outer cover and lead terminals: 500 VAC, 50/60 Hz min. for 1 min (leakage current: 1 mA max.)
Weight 12.8 g
Note: 1. Volumetric flow rate at 0°C, 101.3 kPa.
Note: 2. Dry gas. (must not contain large particles, e.g., dust, oil, or mist.)
Note: 3. Reference (typical)
Note: 4. With no condensation or icing.

(Unit :mm)


Mounting Hole Dimensions
Lead Wire (included): D6F-CABLE1

Precautions for Correct Use

Sensor Applications

The D6F is built for use with general-purpose devices. In particular, when using the D6F for applications with the safety requirements described below, take steps to ensure system and device safety through measures such as fail-safe designs, redundant designs, and regular inspections.
•Safety devices for ensuring safety for persons
•Transportation equipment control (such as applications to stop operation)
•Aviation and space equipment
•Nuclear power equipment
Do not use the D6F for applications in which D6F operation would directly affect human life.

Fluids, Pipe Mounting and Sensor Installation

All D6F Models
(1) Use clean fluids. Install a filter or mist separator on the inflow pipe. Failure to do so may result in malfunction or changes in characteristics due to dust or mist. This does not apply to the D6F-W, D6F-V, D6F-P and D6F-PH.
(2) Do not use corrosive gases other than the specified applicable fluids (such as chlorine, sulfur, acid,or alkali) . Doing so may cause product failure.
(3) The specified performance may not be obtained if the D6F is used for fluids other than the specified applicable fluids.
(4) After removing the Sensor from the package, do not allow foreign particles to enter the piping. Foreign particles in the piping may cause product failure.
(5) Install the Sensor so that the fluid flows in the direction indicated by the arrow on the Sensor. Correct measurements cannot be obtained if the fluid flows in the wrong direction. This does not apply to the D6F-V, D6F-P and D6F-PH.
(6) It is recommended that the Sensor (except for the D6F-A3) be mounted horizontally. If it is not mounted horizontally, an error of ±1% FS or higher may result.
(7) Install the Sensor on a flat surface. Incorrect installation may damage the Sensor and make it impossible to obtain correct measurements.
(8) Make sure that the power to all equipment is turned OFF before you install the Sensor. Installing the Sensor while the power supply is ON may result in electrical shock or abnormal operation.
(9) Always check operation after installation.
(10) Do not drop the Sensor or disassemble the cover.

(1) Make sure that pipes with bamboo joints are airtight. Correct measurements cannot be obtained if there is leakage from joints.
(2) Use M3 panhead screws to install the Sensor, and tighten them to a maximum torque of 0.59 N•m.

Operating Environment

Do not use the Sensor in the following locations:
•Locations directly subject to heat radiated from heating equipment
•Locations subject to water or oil
•Locations subject to direct sunlight
•Locations subject to intense temperature changes
•Locations subject to icing or condensation
•Locations subject to excessive vibration or shock

Countermeasures against Noise

Noise may make it impossible to obtain correct measurements.
Consider the following countermeasures.
•Allow as much space as possible between the Sensor and devices that generates high frequencies (such as high-frequency welders and high-frequency sewing machines) or surges.
•Attach surge absorbers or noise filters to noise-generating devices that are near the Sensor (in particular, equipment with inductance, such as motors, transformers, solenoids, and magnetic coils).
(It also helps to separate pipes and ducts, and to use shielded cables.)

Power Supply

•Force of connector terminal is 20 N max. Do not add strength more than tension of wire bending to connector at wiring. Install the connector coaxially to the fitting axis with holding all wires. And pulling angle should be within 15 degrees.
•Use the applicable connectors. Directly soldering the connection terminals will cause product failure. (except for the D6F-PH)
•Check the terminal names and polarity and wire the power supply correctly. Incorrect wiring will cause failure of internal components.
•When using a commercially available switching regulator, ground
the FG (frame ground) and G (ground) terminals.


The sensor is a precision device, and if large shock and load is applied, it may cause a failure or characteristic change. Please do not use the sensor which is added excessive shock to the terminals, discompose the cover, or has fallen.
•The sensor shall only be handled in electrostatic discharge protected areas (EPA) under protected and controlled conditions

RoHS Directive

The RoHS mark is displayed on the packing of products for which the six substances banned by the RoHS Directive have been abolished (both in processing and in the electronic components mounted to the PCBs).
* RoHS marking may be terminated if it is later determined that parts that were previously treated as RoHS compliant are not compliant due to circumstances at the supplier of the parts.

RoHS Compliance Criteria

The following standards are used to determine RoHS compliance for the six banned substances.
(Items to which the RoHS Directive is not applicable are not given.)
•Lead: 1,000 ppm max.
•Hexavalent chromium: 1,000 ppm max.
•Mercury: 1,000 ppm max.
•PBB: 1,000 ppm max.
•Cadmium: 100 ppm max.
•PBDE: 1,000 ppm max.