Seametrics FT520 v.1 - Manual (Page 4)

Stop Batch/Resume Batch. Pressing the Start/Stop
key anywhere in the batch will stop it. It will remain
stopped until the Resume key is pressed. Pressing the
Resume key allows the batch to restart and go through
to the end.
Choice of Displays for Batching. When in Operation
Mode, press
to change the type of display. Running
Totalizer (“T”) accumulates a Total Flow until it is reset.
Batch (“B”) accumulates the flow of the present batch
only, then resets. Bar Graph (“
❚ ”) graphically indicates
from left to right, how much of the batch has already
accumulated.
Repair
The only field-repairable component on the FT520 is the
fuse. If failure is due to a cause other than a blown fuse,
it is necessary to replace the entire board stack. Contact
your distributor for information.
20419 80th Ave. So., Kent, WA 98032 USA
Phone: 253-872-0284 Fax: 253-872-0285
www.seametrics.com 1-800-975-8153
Staged Shut-off Application
4 of 4
TX Flow Sensor
High-Flow
Valve
Low-Flow
Valve
Tank
FT520
Panel cut-out dimensions
6.00"
gasket
PANEL
CUTOUT
6.00"
High-Flow Valve
Low-Flow Valve
Relay 1
Relay 2
NC
COM
NO
NC
NO
COM
Connection for Staged Shut-off
Caution: Always disconnect
power to the unit before opening
the terminal cover. Do not recon-
nect power until all connections
have been made and the terminal
cover has been replaced.
!
Fuses. The power supply and the analog output circuit
have fuse protection. The two fuses are on the board.
Replace the blown power fuse with a 250 mA, 5x20 mm
glass fuse, available from SeaMetrics or from Radio
Shack (or other electronic supply store). The DC power
fuse is a 1 Amp, 5x20 mm glass fuse.
AR
CH
IVE
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