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2.3 Drum Levels
When an input is defined as a drum level it is linked to the corresponding relay
output. For example, if input #1 is set as drum level, it will be linked to relay one
and may be set by the user to either deactivate the relay, or only to activate an
alarm.
2.4 Flow Switch
MicroVision has a dry contact flow switch option for input number 5 only that will de-
activate all of the control output relays upon a no-flow indication. An Alarm
condition will be indicated and "No Flow" will be displayed. This input is active closed:
Open = no flow; closed = flow.
If a flow switch input or other alarm condition exists, the four (4) LED's will flash until
the alarm condition is cleared
2.5 Water Meter
Each input may be programmed as water meter inputs that are capable of reading
a dry contact water meter. Input number one can be set to read a hall effect type
water meter. Through programming this input can be used to feed inhibitor as well as
totalizing water consumption.
2.6 Alarm Relay (Relay #5)
MicroVision has a dedicated dry contact relay that can be used to interface with
process control equipment or visual indicators. This relay is un-powered and may also
be programmed as a timer.
72-910-23 Rev.F
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