Datasheet

42
Common Precautions for the D6F Series
D6F-W
(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) Use M3 panhead screws to install the Sensor, and tighten
them to a maximum torque of 0.59 N•m.
D6F-V
(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) Use M3 panhead screws to install the Sensor, and tighten
them to a maximum torque of 0.59 N•m.
(3) This Sensor does not contain any protective circuits. Never
allow the electrical load to exceed the maximum ratings.
Doing so may damage the circuits. Install protective circuits
if required.
(4) Mount the Sensor so that the flow inlet side (the side with
the logo) is perpendicular to the windward side and ensure
that the flow inlet and flow outlet are not blocked in any way.
If the Sensor is not mounted correctly, accurate measure-
ments cannot be made.
● 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 con-
nection 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 inter-
nal components.
•When using a commercially available switching regulator, ground
the FG (frame ground) and G (ground) terminals.
● Handling
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 ter-
minals, discompose the cover, or has fallen.
•The sensor shall only be handled in electrostatic dis-
charge protected areas (EPA) under protected and con-
trolled conditions
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 compo-
nents 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 circumstanc-
es at the supplier of the parts.
● RoHS Compliance Criteria
The following standards are used to determine RoHS compli-
ance 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.
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Installation Example
RoHS Directive