SET
PUB -19750-0999
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Specifications
General Information
FT420 Flow Computer
Instructions
The FT420 is a loop-powered microcontroller-based
transmitter/indicator. It displays rate and total, and pro-
vides a 4-20 mA analog signal proportional to flow. A
programmable pulse output is also standard for meter-
ing pump control or data logging.
The rugged cast-aluminum housing is gasketed for
maximum environmental protection, and the electron-
ics are potted into a solid block of urethane. A mem-
brane keypad allows settings to be changed without
removing the cover. The universal mount version
comes with brackets for wall mounting, and also with
an adaptor for field installation on 80-series flow sen-
sors. The FT420 can also be factory or field installed
on a TX100/200 series sensor or WT meter.
Power
4 mA DC (4-20 mA loop),
12-32 VDC
Display
Rate
6-digit autorange, 1/2"
charater height
Total
8-digit, 5/16" character
height
Pulse Output
• 0.1 second open collector
pulse (scaled)
• sensor pulse (unscaled)
Input
Pulse fre 5 VDC
K factor Range
0.050 - 2000
Pulse Output Range
0.1 - 200,000 units/pulse
Temperature
0 C - 70 C
Environmental
NEMA 4X
Features
Sturdy gasketed cover
with electronics
potted in
Removeable foot brackets
for wall mounting
Large rate numerals
Easy set-up
prompts
Triple bosses for
watertight input/output
connections
10.5
2341678.9
SET K
RESET
Two wire
4-20 mA output standard
