FAQ

|Flow Switches

For IFW5□0 and IF3□□ series flow switches, what is the relation between the flow rate and the contacts?

The flow rate set point is an ON flow rate set point. For the 1a contact, an ON signal is output when fluid exceeding the set flow rate flows.
As for the 1b contact, an ON signal is output when the flow rate drops from the set flow rate by the set hysteresis amount.
For IFW5□0 series flow switches, 1ab contact, 1a contact, or 1b contact can be selected. For IF3□□ series flow switches, only 1ab contact is available.