Seametrics FT500 User Manual
Dis con tin ued
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PUB -19501-1000
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Specifications
General Information
The FT500 flow computer provides rate and total flow
display, as well as additional output features. It is de-
signed for use with SeaMetrics meters, as well as many
other meters which provide a pulse-type output. Flow
rate and total are alternately shown, in user-selectable
units, on a large alphanumeric LCD display. The accu-
mulated total can be reset with a series of keystrokes.
High-flow and low-flow alarm setpoints are a standard
feature. The relay outputs of these alarms can be used
to operate a warning device such as an autodialer, or to
shut off critical equipment, such as a pump. The stan-
dard programmable pulse output is useful for metering
pump proportional feed or telemetry.
An optional analog output (0-10 V or 4-20 mA) is easily
field-calibrated. Zero and span are front-panel pro-
grammed in flow units.
The FT500 comes in a weathertight enclosure with a
hinged clear cover over the membrane front panel. Ter-
minal acccess is simplified by a separate cover. Both
12 VDC and 115 VAC versions are available.
Power 115 VAC or 12-16 VDC
(optional), 4 watts max
Temperature 32
°
- 130
°
F (0
°
- 55
°
C)
Humidity 85% non-condensing relative
Enclosure Polystyrene (NEMA 4X with
conduit connection option)
Outputs Two form C SPDT relay 120
VAC 5 A max.
Max Pulse Output 100 mA at 60 VDC (100ms)
Memory Type Battery-backed RAM
(10 year retention)
Sensor Power 12-16 VDC, 50 mA
Totalizer 8 digit (resettable)
Rate Display 5 digit (0-99999)
Engineering Units 1000 gal., cubic mtr., cubic ft.,
Imp. gal., gal., liters, 0.1 gal.,
fluid oz., cubic in., and mL.
Analog Output Optional 0-10 VDC or 4-20
mA 8-bit resolution, 500 ohm
max load
Sensor Input Max. current 25 mA at 12
VDC, Max. frequency 500 hz
Shipping Weight 5 lbs.
FT500 Flow Computer
Instructions
Terminal cover
removes for
easy access
High/Low flow
alarm indicators
(correspond to relays)
Automatic recalculation
of units
Large, alphanumeric
display
Hinged door cover
for protection
Press to select
displayed function
Decrease
setting value
Back to
previous display
Forward to
next display
Increase setting value
FT500
FLOW COMPUTER
DIS
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