[SM-385853-A]
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7
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Connecting load
The output impedance of the analog output section is approx. 1 k . If
the impedance of the connecting load is small, output error
increases. Check error with the impedance of the connecting load
before using. (The analog output current output type is excluded.)
During adjustment
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If switches are operated when flow rate is not stable, such as
pulsating, operation may be unstable. In this case, provide sufficient
margin between the two setting values and avoid setting switches in
an unstable area. Confirm that switch operation is stable before use.
DURING USE & MAINTENANCE
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Output accuracy is affected by temperature characteristics and
self-heat generated when energized. Provide standby time (5
minutes and over) after energizing.
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Immediately after power is turned on, this product does not start flow
rate detection switch operation for approx. 4 seconds to complete
self-diagnosis. Provide a control circuit/program that ignores signals
for 4 seconds after energizing.
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This product cannot be used as a stop valve with zero leakage. Slight
leakage is allowed in product specifications.
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Dust generation inside the paths of the needle valve is not zero.
Install a final clean filter in circuits where dust generation causes
problems.
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This product uses a micro-sensor chip, and must be installed where
it will not be subject to dropping, impact or vibration. Handle this
product as a precision component during installation and
transportation.
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If a problem occurs during operation, immediately turn power off,
stop use, and contact your dealer.
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Keep this product's flow rate within the rated flow range.
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Use this product within the working pressure range.
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If the output setting value is changed, control system devices could
operate unintentionally. Stop devices before changing settings.
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A periodic inspection should be done at least once a year, then make
sure that the product be operated properly.
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Do not disassemble or modify this product. Doing so could result in
faults.
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The case is made of resin. Do not use solvent, alcohol or detergent
in cleaning, or resin could absorb it. Wipe off dirt with a rag soaked in
a diluted neutral detergent solution and wrung out well.
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Pay attention to the reverse current caused by disconnected
wires/wiring resistance. If other devices, including a flow rate sensor,
are connected to the same power sensor as the flow rate sensor, and
the switch output wire and power cable minus (-) side are
short-circuited to check the operation of the control panel's input unit,
or if the power cable's minus (-) side is disconnected, reverse current
could flow to the flow rate sensor's switch output circuit and cause
damage.
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CAUTION:
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CAUTION:
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WARNING:
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WARNING:
Discontinue
