Pulsar Flow Monitor, Инструкция по эксплуатации

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Page 9
Terminal Connections
Power
The Flow Monitor can be powered from mains AC or from a DC
source/battery and where a backup DC power source is connected it will
automatically take over in the event of AC power failure; DC will
automatically power the unit. When AC returns it will switch back.
FlowPulse Sensor
The FlowPulse sensor should be installed and connected, in accordance with
the FlowPulse manual.
Wire the FlowPulse sensor to the Flow Monitor sensor terminals, as on the
previous page.
Relay Outputs
The two relays can be programmed to a variety of alarm & control
functions. The relay contacts are all rated at 2A at 240V AC. All
connections should be such that the short circuit capacity of the circuit to
which they are connected, is limited by fuses rated so that they do not
exceed the relay rating.
Current Output
This is an isolated active mA output of 4 - 20mA or 0 - 20mA, with an
option of a passive mA output. The load should not exceed 1K

.
RS485 termination switch
By default, this is switched off, to enable RS485 termination both switches
need to be switched to the ON position.
Important Information
If the equipment is installed or used in a manner not specified in this manual,
then the protection provided by the equipment may be impaired.