Omega Flowmeter FD-420

Measuring Principle:Doppler ultrasonic
Flow Velocity Range:0.05 to 9 mps (0.15 to 30 fps)
Accuracy:±2% FS over calibrated span
Liquid Types: Liquids containing
100 ppm of useful sonic-suspended
reflectors greater than 100 microns
(see page E-4 for details)
MONITOR
Enclosure: NEMA 4X (IP66),
polycarbonate, stainless steel, brass,
plated-steel mounting brackets
Dimensions: 178 H x 146 W x 99 mm D
(7.00 x 5.75 x 3.88")
Power Supply: 115/230 Vac,
50/60 Hz ±15% @ 5 VA max;
12 to 28 Vdc @ 2.5 VA max
Display: 2-line x 8-character LCD;
LED backlighting; top row, 7-segment
18 mm (0.7"); bottom row, 14-segment
9 mm (0.35"); 8-digit rate, 8-digit total
(resettable)
Units: User configured—feet,
gallons, ft3, mil-gal, meters, liters,
mil ft3, m3, mil-liters, acre-feet,
oil barrels (42 gallon), liquor barrels
(32.5 gallons), lb, kg
Rate:
Interval—second, minute, hour, day
Totalizer exponent: E-2 to E+6
Response Time:
User selectable, 1 to 60 seconds
Outputs: 4 to 20 mA, 800 Ω max;
internal or external power supply;
12-bit resolution; optically isolated
Dual Relay: Independently configured;
form “C”, 200 Vac @ 0.5 A resistive; rate
alarm, totalizer pulse, error
Rate Pulse: 2 output types— 500 mVac
or open collector; 2500 Hz max; 12-bit
resolution; 500 mV AC into 2 kΩ min;
open collector 1 A at 100 V max
Multiple Meters: Synchronization provision included—used for multiple meter/
single pipe system; up to
4 meters may be interconnected to
30 m (100') apart
Keypad: 4 pushbutton keys
Operating Temperature: General
purpose, 40 to 85°C (40 to 185°F)
TRANSDUCERS
Type: Compression-mode
ultrasonic, 625 kHz
Housing Material:
Standard Clamp-On: NEMA 6P
(IP68), -40 to 100°C (-40 to 210°F),
CPVC, Ultem®, nylon, PVC (cable
jacket), aluminum (small pipe)
High-Temp Clamp-On:
NEMA 4 (IP65), -40 to 200°C
(-40 to 400°F), Vespel®, anodized
aluminum, nickel-plated brass,PFA (cable jacket)
Doppler Probe: NEMA 6 (IP67)
-40 to 100°C (-40 to 210°F); 700 psi
(48 bar) max, 316 SS, Ultem®
, FKM,
nylon, PVC (cable jacket)
Optional Flexible Armored Conduit:Zinc-plated steel, PVC
Cable Length:
Standard Lengths:6 m (20') standard