14
RELAY
RELAY MODE:
If the relay is required for a flow switch
check the flow switch box and a further set of options
for set point and hysteresis will appear.
THRESHOLD:
Set the required flow rate for the flow
switch. The
Reset Offset (%)
(Hysteresis) is either
negative or positive depending on whether a falling
or rising alarm is required. The relay has change over
contacts but to reduce power consumption the relay
is off if positive hysteresis is selected and only powers
when the threshold is exceeded. If negative hysteresis
is chosen the relay is on up to the set point. The
increments are preset and can be cycled through using
the + &- buttons. If more than one set point is required
either both transistors must be used or one transistor
and the relay.
ANALOGUE OUTPUTS
ANALOGUE MODE:
There are four options on the
drop down menu: Not Used, 4-20mA, 0-5 Volt and
0-10 Volt.
Once the selection has been made you can enter the
low and high flows for the analogue outputs as required.
These are numeric entries in the units and time base
selected in calibration settings.
