Seametrics FT522 - Manual (Page 3)

adjustable flow sensors, the K-factor must be taken from
the chart in the flow sensor instructions, based on pipe
size. Set using the same procedure as above.
Set Pulse Out. An output pulse is activated at the se-
lected volume intervals if this feature is in use. Other-
wise, it does not need to be set.
Set 20 mA Out. A 4-20 mA analog output is standard
on this unit. If a 4-20 mA current loop is connected, set
the flow rate, in the desired units, at which the peak 20
mA is desired. The controller will automatically scale the
4-20 mA output to zero flow.
Clear Total. This function resets the running total (not
alarm point total) back to zero. It is does not affect the
alarm point total, which automatically resets itself at the
end of every monitoring time period. To reset to zero,
press and simultaneously, as instructed.
Operation
The last press of the key returns the unit to operation
mode (see “Displays” diagram). In this mode, pressing
either arrow key will toggle back and forth between two
displays, one for flow monitoring and the other for usage
monitoring.
Usage Alarm. Pressing the Start/Stop key will start the
clock and zero the total of the usage monitor. The clock
will increase and the total will accumulate (provided there
is flow) until the end of the monitoring period. At that
time, the usage total and clock will zero automatically
and the cycle will start over. If the usage total ever reaches
its alarm point within the monitoring time, the usage alarm
relays will energize and remain on until the Resume key
is pressed.
If the Resume key is pressed during a monitoring cycle,
it will freeze the cycle at its current point. Pressing it again
allows the cycle to resume where it left off.
Flow Monitoring. The “Rate” indication gives the cur-
rent rate of flow. “Total” is a running total of flow which
increases indefinitely unless it is reset (see procedure
under “Settings”.)
3 of 4
Pulse 1
Alternate
low-voltage power
12-24 VDC
Pulse 2
Alarm 2
Alarm 1
NC
COM
NO
NC
NO
COM
Resume
0-10 V
Sensor input
Analog
Outputs
4-20 mA
External Power
Internal Power
Start/Stop
–
+
– +
s1
+
–
s2
RESUME
COM
BATCH
Remote
Controls
Pulse Outputs
Main power
fuse 250 mA
DC Power fuse
1 Amp
loop power
jumper
Ribbon connector
from display board
–
+
–
+
Meter
Ground
Power signal
RED
WHITE
BLACK
Dry contact
AUTODIALER
ALARM
BLACK
WHITE
GREEN
Jumper
Wire
Neut Hot Ground
110 VAC Input
Connections
AR
CH
IVE
D