
2011 NEW PRODUCTS
Please be sure to read before handling the product. Please refer to "safety instructions", "common safety instructions for products listed in this manual", "common safety instructions for flow controller" from page 24 through 35.
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Input components
Input components
Input components
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Please take the following countermeasures to prevent damage by surge current leading.
(1) Please separate output system; inductive load such as solenoid valve and relay, and input system; flow sensor.
(2) If the power source can not be separated, please provide surge suppressor elements to all inductive loads directly. Surge absorbing
element connected PLC, etc., merely protect a single component connected.
(3) Furthermore, please connect surge suppressor element per power line to protect the product from disconnection.
Surge absorbing element (Integrated)
Circuit shutdown by disconnection
or emergency stop
Surge absorbing
element (Later installation)
Flow sensor
Surge current
PLC output
PLC
ON
Main Circuit
Relay
Solenoid
Valve
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Please be careful of leading of surge current.
If the flow sensor shares the power source with inductive load forming surge of a solenoid valve or a relay, etc., when a circuit is
disconnected while the inductive load is activating, depending on the installed position of surge absorbing element, surge current may
lead to the switch output circuit, causing a damage.
If components are connected with connectors, when the connector is removed while energizing, the output circuit may be damaged.
So, please always mount or dismount the connector after the power is turned off.
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Even if exceeding the flow rate range, analog output will be provided. "Hi" or "Lo" will be displayed.
However, please be noticed in advance that accuracy is not guaranteed.
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Please do not punch sensor display. It may cause a failure.