[SM-385853-A]
−
3
−
install this product where water, salt, dust, or swarf is present or in a
pressurized or depressurized environment. This product cannot be
used where the temperature changes greatly or where high humidity
environment could cause damage through dew condensation.
Flow rate unit
●
This product's flow rate is measured at a mass flow rate unaffected
by temperature or pressure. The unit is /min., but this is the display
when the mass flow rate is converted to volumetric flow rate at 20°C
1 barometric pressure (101 kPa)
,
and relative humidity 65%.
Proof pressure
●
Please note the difference when you select the series.
Overflow
●
With each series, no problem will occur in the sensor, even if an
overflow double the measurement range. If dynamic pressure is
applied near the max. working pressure (when a pressure difference
exceeding the max. working pressure is applied between primary
and secondary sides), a problem could occur with the sensor. If
dynamic pressure is applied, such as when a workpiece is filled for
leakage inspection, provide a bypass circuit or restrictor so that
dynamic pressure is not applied to the sensor.
Use for suction confirmation, etc.
●
When this product is used to confirm suction, etc., select the flow rate
range based on the operating vacuum pressure and suction nozzle.
Refer to Page 65 on the attached sheet for “5.Technical data [5.1How
to select flow sensor]”
●
When this product is used to confirm suction, etc., provide an air filter
upstream from suction to prevent the entry of foreign matter.
●
When this product is used to confirm vacuum, etc., consider the
atmospheric dew point and this product’s ambient temperature, and
use the product under conditions in which dew does not condense in
pipes.
●
When this product is used to confirm suction, etc., response time
may be delayed by the capacity of the pipe between the suction
nozzle and this product. In this case, take countermeasures to
reduce piping capacity.
●
When this product is used for vacuum applications such as air
suction, do not bend the tube near the push-in fitting. If stress is
applied to the tube near the push-in fitting, insert an insert ring into
the tube, and connect the tube to the push-in fitting.
Using for leakage inspections
●
The working pressure range of this product is -0.09 to 1.00 MPa. If it
is energized in a vacuum state of -0.09 MPa or less, the sensor’s
heat dissipation performance will drop and could degrade the sensor.
●
When the suction confirmation sensor is switched from a pressure
sensor (switch) to a flow rate sensor (switch), sensor output (switch
output) logic will be reversed. Refer to the drawing below.
Note that the PLC sequence program must be changed or revised.
Pressure sensor (switch)
Flow sensor (switch)
A
dso
rp
tio
n
ve
rif
ica
tio
n
Setpoint and over ON
Setpoint or less ON
ON
OFF
Atmospheric
pressure side
High vacuum
side
ON
OFF
Flow rate
0 side
Flow rate
large side
！
CAUTION:
！
WARNING:
Discontinue
