Seametrics FT520-84 v.2 - Manual (Page 3)

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Connections
SeaMetrics flow meters and flow sensor fittings. On
adjustable flow sensors, the K-factor must be taken from
the chart in the flow sensor instructions, based on pipe
size. Set the number with and . The underlined
digit is the one being set. moves one digit to the left
and increases the digit. When the appropriate number
has been set, press again to move to the next menu
item.
Set Pulse Out. An output pulse is activated at the
selected volume intervals if this feature is in use.
Otherwise, it does not need to be set. Press to move
to the next menu item.
Set 20 mA Out. The “SET 20mA RATE” programs the
flow rate at which the output is 20 mA, 5 V or 10 V. Use
and to set the maximum flow rate desired for full
scale output. Press for next menu item.
Set Regeneration Volume. This is the volume (in the
units you have selected; typically gallons) at which the
relay energizes to initiate a regeneration cycle. Set to
the desired amount using and . Press to move
to the next menu item.
Set Regeneration Time. This is the length of time in
seconds that the relay remains energized to initiate
regeneration. Using , set for slightly over the minimum
time required by the regeneration valve to begin a cycle.
Press to move to the next menu item.
Set Relay Mode. Choose between single relay (Relay
No. 1) and dual relay (Alternate Relays) operation, using
. In alternate relay mode, the first regeneration will
use relay 1, the next will use relay 2, and successive
regenerations will switch between the two. Press to
move to the next menu item.
Clear Total. This function resets the running total back
to zero. It is unrelated to the regeneration function, and
can be ignored unless it is needed. To reset to zero,
press and simultaneously. Press to return to
operation mode.
Operation
Choice of Displays. When all of the settings have been
entered, the next press of the SET Key puts the unit in
operation. If a T appears at the left side of the display,
the values shown are flow rate and running total. If there
is no T, the values shown are flow rate and units
remaining until regeneration. The total increases with
flow, and the regeneration quantity counts down. Use
to choose the preferred display, usually regeneration
Pulse 1
Alternate
12 VDC power
Pulse 2
Relay 2
Relay 1
NC
COM
NO
NC
NO
COM
Regeneration Outputs
Line
Neutral
Ground
Resume
0-5 V or
0-10 V or
4-20 mA
Signal
Start/Stop
–
+
– +
s1
+
–
s2
RESUME
COM
BATCH
Remote
Controls
Pulse Outputs
(for metering pumps)
Main
power fuse
250mA
part # 26926
AC Power
Ribbon connector
from display board
Meter
Power
RED
BLACK
Dry contact
Customer Supplies
1A Fuse
Ground
A
B
An Output
A
P
Passive
Active
Jumpers
5V
10V
4-20mA
PC1 power supply
P/N 05040
WHITE
Analog Switch
Analog Header