Seametrics FT410 User manual

Features
FT410 Flow Computer
Instructions
PUB -19740-1000
Page 1 0f 4
Power 11-28 VDC
Flow Sensor Power 5 Volts DC, 50 mAmaximum
Temperature 0°C to 70°C
Display Custom 8-digit LCD,
0.4" digits
Totalizer 8-digit resettable
(non-reset optional)
Rate Indication 8-digit
K Factor Range .050 - 2000.000
Pulse Output Range 0.1 - 200000.0 gallons per
pulse
Pulse Output 0.1-second open-collector
transistor, 100 mA, 40 VDC
maximum; optional FORM C
SPSTrelay contact closure
5A@ 24VDC
Analog Output
(Optional) 4-20 mAisolated 24 VDC, 500
Ohm maximum; may be wired
non-isolated
Analog Output
Resolution 500 counts full scale
Sensor Output 100 mA, 40 VDC maximum
SpecificationsGeneral Information
The SeaMetrics FT410 is a compact digital flow monitor
with user-programmed output features. Combined with
anIPSeriesinsertionflowsensororaWTturbinemeter,
it is ideal for flow rate and total indication, chart record-
ing,andproportionalchemicalfeed.Itisavailableinwall
orpanel-mountenclosures,orinaroundcast-aluminum
housing mounted directly on a SeaMetrics meter. For
wall-mounting,thenon-metallicenclosureissplashproof
and has a clear cover. The housing for panel mounting
isstandard1/4DIN-sized,with gasketed front panel and
membrane switches. Wall and meter-mounted enclo-
sures are NEMA4X; Panel-mounted enclosures are
NEMA 12.
An eight-digit totalizer is resettable, unless ordered with
non-reset option. Programming prompts simplify set up
by indicating the next step. Pulse output is a program-
mable 0.1 second open-collector transistor pulse (an
optional dry contact pulse output is available) which is
compatiblewithelectronicmeteringpumps,PLC's,com-
puter input cards, and SeaMetrics controls.An optional
4-20 mAoutput feature is front-panel programmable in
standard flow rate units.
RESET RATE/TOTAL
+
PROGRAM
-
FT410
SETP
410.0
ResetTotalizertoZero
(Non-resettableoptional) SwitchesbetweenRateand
TotalDisplays(Alsorespondsto
magnetoutsideenclosure)
Selectable
decimal
point
Presstochange
settings:
•K-factor
•PulseOutput
•4-20mA(optional)
Promptsappear
whenprogram
buttonispushed.
"SETP"means
setpulseoutput
ingallonsper
pulse.
Otherprompts:
•SETK(meterfactor)
•SET20mA(optional)
•SETDP(totalizer)
Buttonsincrease
ordecreasesetting
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Installation
FT410W: Wall Mounting. Four 3/16" screw holes are
located at the bottom of the front cover screw holes.
Mark the locations through the holes, then drill. Slip
screws down the holes and tighten.
FT410P: Panel Mounting. Use the dimensions on the
backpageformakingthepanelcutout.Locatethedove-
tail mounting bracket grooves on the side and the top of
the unit. After cutting out the panel, break any sharp or
rough edges, then slip the panel gasket in place behind
the FT410 bezel and slide the unit through the panel
hole. Install the mounting brackets in their dovetail
grooves, with the slots of the clamping screws facing
out. Tighten the screws to pull the unit tightly against the
panel and compress the gasket slightly.
Connections
FT410M: This unit is pre-wired with 18 ft. of four-con-
ductor cable. See diagram for color coding of the leads.
If desired, the cable supplied can be removed, and con-
nections can be made inside the unit, following the Con-
nections diagram.
FT410W: This unit is pre-wired with 6 ft. of two-conduc-
tor cable for the power connections. See diagram for
colorcodingoftheleads.Tocompletethewiringneeded
for the application, remove the front clear cover, then
remove the front panel to reach the terminals. Turn the
front panel over, with the circuit boards still attached.
Follow the connections diagram.
Note the polarity of the Pulse Output terminals. Be sure
to observe proper polarity when connecting to an elec-
tronic metering pump. If the pump does not respond to
the pulse output, try switching polarity.
Sensor Out terminals are provided for passing on the
signal from a flow sensor to a second electronic device.
They do no need to be connected unless using such a
device.
FT410P: This unit is ordinarily supplied without pre-wir-
ing.Toreachtheterminals, removethefour screwswhich
hold the back cover of the housing in place. Follow the
connections diagram
Analog Output Board. The optional 4-20 mA output
uses a third printed circuit board which plugs into the
terminal connection board. This board is pre-wired at
the factory with a jumper, so that powering the FT410
automatically provides power to the current loop. If an
isolated 4-20 mA output is required (see Connections) it
is necessary to remove the jumper and rewire as shown
in “Analog Output - Isolated”.
Programming
Set K-Factor. To begin programming, press the PRO-
GRAM key. The prompt SET K should appear. The K-
factor is the number of pulses per volume unit. This
number is provided with SeaMetrics meters, in pulses
pergallon.IftheFT410is to read in other units, the num-
ber provided with the meter must be converted. The
FT410 will then totalize in the selected units, and the
rate reading will be in those units per minute. The rate is
always in units per minute.
To enter the K-factor, press the “+” or “-” keys until the
desired number is reached.
Set Pulse Output. PressingPROGRAMasecondtime
brings up the prompt SET P. This setting controls the
pulseoutput,ifitisbeing used. It is set in units per pulse.
For example, if the FT410 is reading in gallons, a setting
of 2.00 means that a pulse will occur every 2 gallons.
Settingsmaybeassmallas0.1,whichmeansthatthere
isapulse every 0.1 units.Iftheoptional dry contact pulse
output is present, SET P sets that pulse output also.
(NOTE:
Pulse output is limited to 100 ppm )
!
Caution: If pulse output is being
usedto control anexternaldevice,
such as a metering pump, do not
connect the pulsed device until
programming is completed. If malfunction or in-
correct programming of the pulse output could
causepersonalinjury or property damage, sepa-
ratesafeguards mustbeinstalled topreventsuch
injury or damage.
Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply
Blue (+) 4-20 mA
Orange (-) 4-20 mA
FT410M, FT410W - With Analog Option:
Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply
FT410W - Standard Unit:
Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply
Green (+) pulse output
White (-) pulse output
FT410M - Standard Unit:
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IP SENSOR
Standard Connections
DC Power
RED
BLACK
RED
WHITE
BLACK
SIG
-
-
+
+
SENSOR
INPUT
-
-
+
+
SENSOR
OUT
PULSE
OUT
METERING PUMP
To 2nd FT410
or control
GREEN
WHITE
DRY CONTACT
PULSE OUTPUT
(OPTIONAL)
NC
COMNO
POWER
+ -
OPTIONAL 4-20mA
CURRENT LOOP
IP SENSOR
CHART RECORDER
Analog output - Non-Isolated
DC Power
RED
BLACK
RED
WHITE
BLACK
-
-
+
+
SENSOR
OUT
PULSE
OUT
METERING PUMP
To 2nd FT410
or control
GREEN
WHITE
Blue +
Orange -
SIG
-
-
+
+
SENSOR
INPUT
POWER
DRY CONTACT
PULSE OUTPUT
(OPTIONAL)
NC
COMNO
Analog output - Isolated
IP SENSOR
CHART RECORDER
SIG
-
-
+
+
SENSOR
INPUT
POWER
METERING PUMP
To 2nd FT410
or control
-
-
+
+
SENSOR
OUT
PULSE
OUT
NC
COMNO
DRY CONTACT
-
+
+
-
OPTIONAL 4-20mA
CURRENT LOOP
24
VDC
PULSE OUTPUT
(OPTIONAL)
DC Power
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20419 80th Ave. So., Kent WA. 98032 USA
Phone: [phone] Fax: [phone]
www.seametrics.com 1-800-975-8153
Operation
In normal operation the FT410 displays rate or total.
Pressing RATE/TOTALalternates from one to the other.
This can also be accomplished from outside the unit by
touching a magnet to the outside of the case in the gen-
eralvicinity of the RATE/TOTALkey.When rate is show-
ing, total continues to accumulate. Unless the unit has
theNR(non-reset)option,pressing the RESETkey sets
total to zero. Total is stored in nonvolatile memory and is
kept on loss of power, although the unit will not operate
during the power outage.
Repair
The only field-repairable component on the FT410 is
the fuse. The fuseholder is found on the back of the cir-
cuit board stack. Replace with a Littlefuse 3AG 1/2-Amp
or equivalent automotive-type fuse.
On units with the 4-20 mA option, it is necessary to re-
move the analog board at the back of the stack to reach
the fuse. Unplug the board by gently tugging on it. On
somemodels,itisalsonecessary to remove four screws
to get the analog board loose.
If failure is due to a cause other than a blown fuse, it is
necessaryto replace theentireboardstack. Contactyour
distributor for information.
Mounting Dimensions
4.20"
3/16" MOUNTING HOLES
UNDER COVER SCREWS
3" 5"
5"
FT410
RESET RATE/TOTAL
+
PROGRAM
-
FT410W Wall Mount
PANEL CUTOUT
RESET RATE/TOTAL
+
PROGRAM
-
FT410
3.75"
3.55"
3.75"
2"
3.5"
FT410P Panel Mount
3.55"
Set 4-20 mA Span. If the optional 4-20 mA board is in-
stalled,thepromptSET20 mAwillappear.Setthisvalue
to the flow rate, in units per minute, at which the full 20
mA output is desired. Zero flow will automatically be
scaled to 4 mA.
Set Decimal Point. Pressing PROGRAM again brings
up SET DP. Choices are one decimal place or none.
Pressing the +/- keys alternates between the two. Typi-
cally, a decimal place is only required with low-flow
meters. Exit programming mode. Pressing rate/totalizer
button returns unit to operating state.
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