Omega Products FTB-422 User Manual
LOW FLOW PLASTIC TURBINE
28.2
(1.11)
2.8
(0.11)
11
(0.43)
17
(0.67)
45
(1.77)
21.2
(0.83)
NT
or G
Output
O Vdc
5 to 24 Vdc
2k to 10 kΩ
Customer
Supplied
(+)
(-)
Pin Code: 1 = Output
2 = Supply
4 = Common
Wiring
Mating DIN Connector
U Low Flow Rates 0.1 to 2.5 LPM
U High Accuracy ±3% of Reading
U Lightweight Turbine Ensures
Fast Startup
U Mounts in Any Orientation
OMEGA’s FTB-420 Series features proven turbine
technology in a small package for low flow applications.
The turbine technology provides a highly repeatable
sensor ideally suited for measurement of either
volume dispensing and/or flow rate applications.
The small turbine reacts quickly to on/off dispensing
applications. Each sensor is 100% tested, ensuring
long service life.
SPECIFICATIONS
Wetted Materials:
Body: Nylon 12
Turbine: Nylon 12 composite
Bearings: PTFE/15% graphite
Operating Pressure: 24 bar (350 psi)
Burst Pressure: 97 bar (1400 psi)
Flow Range: 0.026 to 0.65 GPM (0.1 to 2.5 LPM)
Pulses: 83,200 per gallon (22,000 per liter)
Frequency Output: 36.6 to 917 Hz
Operating Temperature: -20 to 100°C (-4 to 212°F)
Viscosity: 32 to 70 SSU (0.8 to 16 centistokes)
Filter: <50 Microns
Input Power: 5 to 24 Vdc
Output (Hz): NPN sinking open collector @ 20 mA
maximum leakage
Current: 10μA (3 to 30K pull up resistor required)
Accuracy: ±3% of reading
Repeatability: 0.5% of full scale
Electrical Connection: 9.4 mm spacing 3-pole DIN
connector (1" high)
Inlet/Outlet Ports: ¹⁄₄ NPT or ¹⁄₄ G male
P MBAR
∆
FTB-420 Series
unction DIN Terination
V+ 1
–
utput 2
Pressure Drop—Typical
400
350
300
250
200
150
100
50
0
0 0.5 2.5 312
GPM
0.400.13 0.660.26 0.53
1.5
FLOW RATE - L/MIN
5.0
4.4
3.6
2.9
2.2
1.5
0.7
PSI
FTB-421 shown actual size.
2.8
(0.11)
11
(0.43)
45
(1.77)
Wiring
Pin Code: 1 = Output
2 = Supply
4 = Common
21.2
(0.83)
28.2
(1.11)
NT
or G
Dimensions: mm (inch)
To Order Visit omega.com/ftb-420 for
Pricing and Details
Model No. Description
FTB-421 Low flow nylon turbine ¹⁄₄ NPT
FTB-421G Low flow nylon turbine ¹⁄₄ G
FTB-422 Low flow PPA turbine ¹⁄₄ NPT
FTB-422G Low flow PPA turbine ¹⁄₄ G
Comes complete with DIN connector and operator’s manual.
Ordering Example: FTB-421, low flow nylon turbine
K-1
17
(0.67)
(+)
5 to 24 Vdc
(-)
O Vdc
2k to 10 kΩ
Customer
Supplied
Output
1
NPT.
⁄
4
A
K
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