
IN-LINE ULTRASONIC FLOWMETER
FDT100 Series
Starts at
$
2538
Standard
⻬ Economical
Ultrasonic Flowmeter
for Water Service
⻬ Battery Powered
⻬ Displays Flow Rate
and Total
⻬ Extended Low
Flow Range
⻬ Virtually No
Pressure Loss
⻬ No Moving Parts for
Long Life
⻬ NIST 3-Point
Calibration Included
The FDT100 Series comprises
advanced-technology water
flowmeters. This series uses
transit-time ultrasonic technology in
which the signal is transmitted and
received alternately between 2 flow
sensors and the “time of flight”
determines the flow rate. The
battery-powered transmitter comes
in the user’s choice of an integrally
mounted display or a remote-mount
version. Applications include both
commercial and consumable water
measurement. Long-term stability
and a wide measurement range
make it possible not only to
measure water consumption, but
also to monitor systems for water
leakage. Because the FDT100
Series has no moving parts, system
pressure loss is minimal and
filtration is not required. Display flow
rate or total at the push of a button.
Installation is aided by 150-lb ANSI
flanges in sizes from 2 to 8".
SPECIFICATIONS
Accuracy: ±2% of reading;
±5% below minimum transition rate
Fluid Temperature:
0 to 50°C (32 to 122°F)
Maximum Pressure: 230 psig
Enclosure:
IP67 (integral mount version)
Electronic Housing:
Aluminum alloy with plastic cover
Display:
7-segment, 8-digit, single-line LCD
ANSI Flange Size 221⁄2 34568
Overload Flow Rate qs[GPM] 130 220 350 530 880 1320 1585
Nominal Flow Rate qp[GPM] 65 110 175 265 440 660 1100
Transitional Flow Rate qt[GPM] 13 22 35 53 88 132 220
Minimum Flow Rate q
Pulse Output Constant k
DIN Flange Size
Overload Flow
Rate qs[m3/h]
Nominal Flow
Rate qp[m3/h]
Transitional Flow
Rate qt[m3/h]
Minimum Flow
Rate q
min
Pulse Output
Constant ki[l/pulse]
FDT103, $2538, shown
smaller than actual size.
min
32 40 50 65 80 100 125 150 200
12 20 30 50 80 120 200 300 360
0.48 0.8 35812 20 30 50
[m3/h]
0.12 0.2 0.45 0.75 1.2 1.8 3 4.5 7.5
10 25 25 50 50 100 100 100 100
E-X
Remote
display
shown
smaller than
actual size
Current Output: 4 to 20 mA/DC current
(requires 8 to 24 Vdc supply)
Open Collector Output:
5 to 30 Vdc, 1 mA max
Flange: ANSI 150# or DIN
Meter Body: Cast iron
Power Supply:
Internal 3.6V battery (included),
1 to 2 year life
ANSI Size Rate Information
[GPM] 2 3.3 5.3 8 13.2 20 33
[gal/pulse] 5 10 10 15 30 30 30
i
DIN Size Rate Information
6 10 15 25 40 60 100 150 250

ULTRASONIC
SENSOR
ELECTRONIC
CONTROL UNIT
PRESSURE
CURRENT OUTPUT
IMPULSE OUTPUT CONST.
warranty
removed
void if
G/imp
ANSI
S/N 22686/06
BN 15 1,45psi
mA
psi
232
5
4-20
2"
136 (5.4)
S
L
D
DN
warranty
removed
void if
G/imp
ANSI
S/N 226 86 /06
BN 15 1,45psi
mA
psi
232
5
4-20
2"
D
max length: 5 m (16.4')
ELECTRONIC
SENSOR
ULTRASONIC
SENSOR
TERMINAL BOARD
PRESSURE
CURRENT OUTPUT
IMPULSE OUTPUT CONST.
DN
61 (2.4)
5.5 (0.2)
4 (0.2)
90 (3.5)
80 (3)
10 (0.4)
61 (2.4)
136
(5.4)
84
(3.3)
11 (0.4)
61 (2.4)
LL
Dimensions: mm (in)
ø = diameter
Compact Version—Basic Dimensions
DN 32 (13⁄4) 40 (11⁄2) 50 (2) 65 (21.2) 80 (3) 100 (4) 125 (5) 150 (6) 200 (8)
L: mm (in) 260 (10.2) 300 (11.8) 300 (11.8) 300 (11.8) 350 (13.8) 350 (13.8) 350 (13.8) 350 (13.8) 350 (13.8)
S: mm (in) 190 (7.5) 198 (7.8) 208 (8.2) 225 (8.9) 237 (9.3) 253 (10) 280 (11) 307 (12) 352 (14)
D: mm (in) 140 (5.5) 150 (5.9) 165 (6.5) 185 (7.3) 200 (7.9) 220 (8.7) 250 (9.8) 285 (11.2) 340 (13.4)
Weight: kg (lb) 4.5 (10) 7 (15) 10 (22) 11 (24) 15 (33) 17.5 (39) 22.5 (50) 26 (57) 36.5 (80)
E
Dimensions: mm (in)
ø = diameter
Remote Version—Basic Dimensions
DN 32 (13⁄4) 40 (11⁄2) 50 (2) 65 (21.2) 80 (3) 100 (4) 125 (5) 150 (6) 200 (8)
L: mm (in) 260 (10.2) 300 (11.8) 300 (11.8) 300 (11.8) 350 (13.8) 350 (13.8) 350 (13.8) 350 (13.8) 350 (13.8)
D: mm (in) 140 (5.5) 150 (5.9) 165 (6.5) 185 (7.3) 200 (7.9) 220 (8.7) 250 (9.8) 285 (11.2) 340 (13.4)
Weight: kg (lb) 5 (11) 7.5 (16.5) 10.5 (23) 11.5 (25) 15.5 (34) 18 (40) 23 (51) 26.5 (58) 37 (82)
E-X

Remote
display
FDT103-R, $2816, shown
smaller than actual size.
shown
smaller than
actual size
MOST POPULAR MODELS HIGHLIGHTED!
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
150# ANSI
Flange Size
Model No. Price cm (in) Description
FDT103 $2538 5 (2) Battery-powered ultrasonic flowmeter
FDT104 2625 6.3 (2.5) Battery-powered ultrasonic flowmeter
FDT105 2729 7.6 (3) Battery-powered ultrasonic flowmeter
FDT106 2816 10.2 (4) Battery-powered ultrasonic flowmeter
FDT107 2886 12.7 (5) Battery-powered ultrasonic flowmeter
FDT108 3112 15.2 (6) Battery-powered ultrasonic flowmeter
FDT109 3685 20.3 (8) Battery-powered ultrasonic flowmeter
FDT103-R 2816 5 (2) Battery-powered ultrasonic flowmeter with remote display
FDT104-R 2990 6.3 (2.5) Battery-powered ultrasonic flowmeter with remote display
FDT105-R 3094 7.6 (3) Battery-powered ultrasonic flowmeter with remote display
FDT106-R 3181 10.2 (4) Battery-powered ultrasonic flowmeter with remote display
FDT107-R 3251 12.7 (5) Battery-powered ultrasonic flowmeter with remote display
FDT108-R 3476 15.2 (6) Battery-powered ultrasonic flowmeter with remote display
FDT109-R 4050 20.3 (8) Battery-powered ultrasonic flowmeter with remote display
Model No. Price DIN Size Description
FDT101-DIN $2451 32 Battery-powered ultrasonic flowmeter
FDT102-DIN 2503 40 Battery-powered ultrasonic flowmeter
FDT103-DIN 2555 50 Battery-powered ultrasonic flowmeter
FDT104-DIN 2625 65 Battery-powered ultrasonic flowmeter
FDT105-DIN 2729 80 Battery-powered ultrasonic flowmeter
FDT106-DIN 2816 100 Battery-powered ultrasonic flowmeter
FDT107-DIN 2903 125 Battery-powered ultrasonic flowmeter
FDT108-DIN 3094 150 Battery-powered ultrasonic flowmeter
FDT109-DIN 3685 200 Battery-powered ultrasonic flowmeter
FDT101-R-DIN 2816 32 Battery-powered ultrasonic flowmeter with remote display
FDT102-R-DIN 2868 40 Battery-powered ultrasonic flowmeter with remote display
FDT103-R-DIN 2920 50 Battery-powered ultrasonic flowmeter with remote display
FDT104-R-DIN 2990 65 Battery-powered ultrasonic flowmeter with remote display
FDT105-R-DIN 3094 80 Battery-powered ultrasonic flowmeter with remote display
FDT106-R-DIN 3181 100 Battery-powered ultrasonic flowmeter with remote display
FDT107-R-DIN 3268 125 Battery-powered ultrasonic flowmeter with remote display
FDT108-R-DIN 3476 150 Battery-powered ultrasonic flowmeter with remote display
FDT109-R-DIN 4050 200 Battery-powered ultrasonic flowmeter with remote display
Accessory
Model No. Price Description
FDT100-BAT $35 Replacement battery for the FDT100 Series
Comes complete with operator’s manual, 3.6V battery, and NIST 3-point calibration.
For a 4-point NIST calibration, add suffix “-NIST4” to model number and $520 to price. For an 8-point NIST calibration, add suffix “-NIST8”
to model number and $920 to price.
Ordering Examples: FDT104-R, 2
FDT106, 4" 150# ANSI flanged ultrasonic flowmeter with integral display, $2816.
Recommended Reference Book: Consumer’s Guide to Magnetic Flowmeters, FW-202, $250.
1
⁄2" 150# ANSI flanged ultrasonic flowmeter with remote display, $2990.
Visit omega.com/bobi for Additional Books
E-X

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