Seametrics FT410 Instructions Manual

FT410 Flow Computer

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Instructions

SpecificationsGeneral Information

The SeaMetrics FT410 is a compact digital flow monitor
with user-programmed output features. Combined with
an IP Series insertion flow sensor or a WT turbine meter,
it is ideal for flow rate and total indication, chart record­ing, and proportional chemical feed. It is available in wall
or panel-mount enclosures, or in a round cast-aluminum
housing mounted directly on a SeaMetrics meter. For
wall-mounting, the non-metallic enclosure is splashproof
and has a clear cover. The housing for panel mounting
is standard 1/4 DIN-sized, with gasketed front panel and
membrane switches. Wall and meter-mounted enclo­sures are NEMA 4X; 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 program­mable 0.1 second open-collector transistor pulse (an
optional dry contact pulse output is available) which is
compatible with electronic metering pumps, PLC's, com­puter input cards, and SeaMetrics controls. An optional
4-20 mA output feature is front-panel programmable in
standard flow rate units.

Power 11-28 VDC
Flow Sensor Power 5 Volts DC, 50 mA maximum
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
SPST relay contact closure
5A@ 24VDC

Analog Output
(Optional) 4-20 mA isolated 24 VDC, 500

Ohm maximum; may be wired
non-isolated

Analog Output
Resolution 500 counts full scale
Sensor Output 100 mA, 40 VDC maximum

Features

Promptsappear
whenprogram
buttonispushed.
"SETP"means
setpulseoutput
ingallonsper
pulse.
Otherprompts:

•SETK(meterfactor)

•SET20mA(optional)

•SETDP(totalizer)

ResetTotalizertoZero
(Non-resettableoptional)

FT410

RESET RATE/TOTAL

SETP

410.0

PROGRAM

-

+

Presstochange
settings:

•K-factor

•PulseOutput

•4-20mA(optional)

SwitchesbetweenRateand
TotalDisplays(Alsorespondsto
magnetoutsideenclosure)

Selectable
decimal
point

Buttonsincrease
ordecreasesetting

PUB -19740-1000

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Installation

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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
back page for making the panel cutout. Locate the dove­tail 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 con­nections can be made inside the unit, following the Con­nections diagram.

FT410M - Standard Unit:

Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply
Green (+) pulse output
White (-) pulse output

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-wir­ing. T o reach the terminals, remove the four screws which
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

Caution: If pulse output is being

used to control an external device,
such as a metering pump, do not

connect the pulsed device until
programming is completed. If malfunction or in­correct programming of the pulse output could
cause personal injury or property damage, sepa­rate safeguards must be installed to prevent such
injury or damage.

FT410W - Standard Unit:

Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply

FT410M, FT410W - With Analog Option:

Red (+) 12 VDC to power supply
Black (-) 12 VDC to power supply
Blue (+) 4-20 mA
Orange (-) 4-20 mA

FT410W: This unit is pre-wired with 6 ft. of two-conduc­tor cable for the power connections. See diagram for
color coding of the leads. T o complete the wiring needed
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 elec­tronic metering pump. If the pump does not respond to
the pulse output, try switching polarity.

Set K-Factor. To begin programming, press the PRO­GRAM key . The prompt SET K should appear . The K­factor is the number of pulses per volume unit. This
number is provided with SeaMetrics meters, in pulses
per gallon. If the FT410 is to read in other units, the num­ber 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. Pressing PROGRAM a second time
brings up the prompt SET P. This setting controls the
pulse output, if it is being 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.
Settings may be as small as 0.1, which means that there
is a pulse every 0.1 units. If the optional dry contact pulse
output is present, SET P sets that pulse output also.
(NOTE:

Pulse output is limited to 100 ppm

)

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