SPECIFICATIONS
Flow Rate Range:
0.25 to 40 ft/sec ((0.08 to 12.2
m/sec) in most applications
Pipe Size:
Any pipe ID from 0.5" to 180"
(12.5 mm to 4.5 m)
Accuracy:
±2% of full scale. Requires solids
or bubbles minimum size of 100
microns, minimum concentration 75
ppm. Repeatability: ±1%, Linearity
±0.5% of full scale
Displays:
Flow Rate – large, 4-digit LCD in
programmable engineering units
Totalizer/Menu/Status/Signal
Strength – 16-digit LCD,
alphanumeric
Calibration:
built-in 3-key calibrator, No-drift
transmitter: quartz crystal
frequency reference
Power Input:
100-130VAC, 50/60 Hz, (7.2 W max.)
Optional: 200-260VAC, 50/60 Hz, (7.2 W max.)
Optional: 12VDC or 24VDC, (6.5 W max.)
Power Consumption:
120VAC 0.06 amps (7.2 W); 240VAC 0.03 amps (7.2 W);
24VDC 0.27 amps (6.5 W); 12VDC 0.54 amps (6.5 W)
(Relays Off reduces by 1 W; 4-20mA disconnected reduces by 0.5 W)
Output:
Isolated 4-20mA (1000 ohm load max.)
Control Relays:
Qty 3, rated 5 amp SPDT, programmable flow alarm and/or proportional pulse
Back Flow Rejection:
forces display and outputs to zero with contact closure from remote relay
Enclosure:
watertight, dust tight NEMA4X (IP66) fiberglass with a clear shatter-proof face
Electronics Operating Temp:
-10
°
to 140
°
F (-23
°
to 60
°
C)
Sensitivity:
adjustable. Damping: adjustable
Electrical Surge Protection:
Sensor, 4-20mA output and AC power input
SE3 Doppler Sensor
Minimum Pipe Diameter:
0.5" (12.5 mm) ID,
0.6" (15 mm) OD
Maximum Pipe Diameter:
180" (4.5 m) ID
Operating Temperature:
-40
°
to 200
°
F (-40
°
to 93
°
C)
Operating Frequency:
640 KHz
Sensor Housing:
Stainless Steel with
Epoxy face
Sensor Cable:
20 ft. (6 m) shielded
coaxial pair
(RG174U)
Optional 50 ft (15 m) continuous
Submersion Rating:
Withstands accidental submersion pressure up to 10 psi (0.7 Bar)
Hazardous Locations:
Rated for sensor and cable installation in
Class I, Div. I,II, Groups C,D,E,F,G
Hazardous locations with optional Intrinsic Safety Barriers
Page 39
DFM-IV Doppler Flow Meter
Manual Series A.6
ENCLOSURE
7.4 / 188 mm
"
6.46 / 164 mm
"
10
.9
4"/2
78
m
m
10
/2
54
m
m
"
CONDUIT ENTRY
LOCATION
SIDE VIEW
5.12 / 130 mm
"
DFM-IV
Doppler
Flow Meter
SE3 DOPPLER SENSOR
SIDE VIEW
END
VIEW
1.25"
31.75 mm
1.0"
25.4 mm
0.285 in
7.3 mm OD
20 ft / 6 m
2.25" / 57 mm
