4
D6F-P MEMS Flow Sensor
Safety Precautions
The D6F is built for use with general-purpose devices. In cases
such as those described below, where safety is required, imple-
ment measures to ensure the safety of the system and all
devices, such as fail-safe designs, redundancy designs, and reg-
ular maintenance.
• 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.
Make sure that the power to all equipment is turned OFF before
you install the Sensor. Installing the Sensor while the power sup-
ply is ON may result in electrical shock or abnormal operation.
● Fluids,Tubes, and Sensor Installation
All Models
(1)
Use clean fluids. Dust and mist can affect the characteristics
of the Sensor or damage the Sensor. Install a filter and mist
separator on the upstream tube.
(Not required for the D6F-W@A1 or D6F-P.)
(2)
Do not use combustible gases (e.g., hydrogen), corrosive
gases (e.g., chlorine, sulfur, acidic, or alkali gas), or other
non-approved fluids. They may damage the Sensor.
(3)
The performance specifications that are given for the G6F
do not apply if any fluids other than the specified applicable
fluid are used.
(4)
Foreign matter in the tubes that are connected to the Sensor
may damage the Sensor. Prevent any foreign matter from
entering the tubes after the Sensor is removed from its
packaging.
(5)
Attach the tubes so that fluid flows only in the direction des-
ignated by the arrows on the Sensor. Correct measurements
cannot be obtained if the fluid flows in the wrong direction.
(6)
We recommend that you install the tubes horizontally. If the
tubes are not installed horizontally, an error of ±1% FS or
higher may result.
(This does not apply to the D6F-03A3.)
(7)
Install the Sensor on a flat surface. Incorrect installation may
damage the Sensor and make it impossible to obtain correct
measurements.
(8)
After the Sensor is installed, check to confirm that it oper-
ates correctly.
(9)
Do not drop the Sensor, remove the cover, or attempt to dis-
assemble the Sensor in any way.
D6F-P0001A1, D6F-P0010A1, and D6F-P0010A2
(1)
Depending on the ambient environment and installation
location, dust, dirt, and other foreign matter may come in
inside the Sensor and block a part or all of the flow path or
accumulate on internal components. This may result in the
Sensor not being able to perform to the specifications given
above. Always perform a pre-evaluation on your actual
equipment and be aware of the possible problems that may
occur before you use the Sensor with the actual equipment.
(2)
Attach all tubes so that the fluid flows only in the direction
from the positive side (+) to the negative side (−).
(3)
For PCB-mounting, perform terminal soldering only after the
Sensor is secured into place on the PCB.
(4)
Use M2.6 panhead screws or equivalent tapping screws to
mount the Sensor, and tighten the screws to a maximum
torque of 0.59 N·m.
D6F-P0010AM2
(1)
Depending on the ambient environment and installation
location, dust, dirt, and other foreign matter may come in
inside the Sensor and block a part or all of the flow path or
accumulate on internal components. This may result in the
Sensor not being able to perform to the specifications given
above. Always perform a pre-evaluation on your actual
equipment and be aware of the possible problems that may
occur before you use the Sensor with the actual equipment.
(2)
Attach all tubes so that the fluid flows only in the direction
from the positive side (+) to the negative side (−).
(3)
Use M3 panhead screws or equivalent tapping screws to
mount the Sensor, and tighten the screws to a maximum
torque of 0.59 N·m.
(4)
Install O-rings to seal the fluid inlet and outlet points. The
recommended O-ring is JIS B 2401, nominal number P4.
● Operating Environment
Do not use the Sensor in the following locations:
• Locations directly subject to heat radiated from heating equip-
ment
• 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
• Do not directly solder power supply leads to the connector ter-
minals. Use only the appropriate connectors.
• Wire with the correct terminal names and polarities. Incorrect
wiring will cause failure of internal components.
• When using a commercially available switching regulator,
ground the FG (frame ground) and G (ground) terminals.
WARNING
Caution
Precautions for Correct Use
O-ring
M3 panhead screw or a tapping screw
with the same diameter