Omega Products FTB601B User Manual
ALL PLASTIC ULTRA-LOW FLOW SENSORS
FTB600B Series
U ±1% of Reading Accuracy
Six Flow Ranges,
U
from 0.1 to 120 LPM
No Flow Straightening
U
Needed
Turn Down Up to 30:1
U
Easily Mounts
U
in Any Position
Hose Barb or
U
Threaded Connections
Principle of Operation
The OMEGA® FTB600B Series
Flowmeters feature an infrared,
electro-optical transmitter and
receiver molded into the flowmeter’s
body, along with two miniature
circuit boards to provide voltage
stabilization and automatic IR
output level control. The FTB600B
automatically compensates IR light
intensity for varying fluid opacity
levels to ensure a strong square
wave output signal. The flowmeter
is suitable for clear, transparent and
translucent fluids which must
transmit infrared light. (Note: Not
suitable for use with red liquids).
The design of the FTB600B
inherently bleeds off entrained
gas, thereby improving overall
accuracy. This flowmeter can
be easily mounted into any
position for greater system
design flexibility, also saving
time and installation costs.
A strainer is included in models
FTB602B through FTB606B.
SPECIFICATIONS
Accuracy: ±1% of reading
Repeatability: ±0.1% of reading
Viscosity Range: 1 to 15 cSt
Working Pressure:
150 psig at 79°C (175°F)
Max Pressure Drop @ Max Flow:
@30 psi on all units (6.5 psi on FTB601)
A
Shown larger
than actual size.
C
L
Please refer to ordering chart below for specific unit dimensions.
Principle of Operation
1 Fluid first passes through helical nozzle
2 This causes the flow to spiral, rotating in a helical pattern
3 The spiraling fluid hits the flat blade rotor, causing it to spin
4 An infrared, electro-optical transmitter and receiver provide
a square wave electronic output signal
Ambient Temperature:
-40 to 85°C (-40 to 185°F)
Wetted Parts: PVDF (polyvinyldene
fluoride) FKM O-rings (O-rings are not
wetted on NPT units)
Power Supply: 8 to 24 Vdc, 6 to 33 mA
Output Signal: Square wave pulse
Cable Length: 0.9 m (3')
To Order Visit omega.com/ftb600 for Pricing and Details
Model No. (LPM) A L C Liter Size mm (")
FTB601B 0.1 to 2 9 (0.35) 96 (3.8) 6.9 (0.27) 36000
FTB602B 0.3 to 9 12 (0.47) 112 (4.4) 9 (0.35) 8000
FTB603B 0.5 to 15 12 (0.47) 116 (4.6) 12 (0.47) 3200
FTB604B 1 to 30 16 (0.63) 136 (5.4) 16 (0.63) 1200
FTB605B 2.5 to 75 16.5 (0.65) 182 (7.2) 19.5 (0.77) 450 1
FTB606B 4 to 120 16.5 (0.65) 183 (7.2) 24.5 (0.96) 225 1
Comes complete with 0.9 m (3') cable, and operator’s manual.
For NPT Threads add suffix “-T” to model number, no additional charge.
Ordering Examples: FTB602B, flowmeter with 0.3 to 9 LPM range.
FTB605B-T, flowmeter with 2.5 to 75 LPM range, 1
K Factor “-T” Option
Flow
Dimensions mm (inch)
Range
1
NPT fittings.
⁄
4
Pulses/ NPT Length
¹⁄₄
39 (1.5)
¹⁄₂
47 (1.85)
¹⁄₂
47 (1.85)
³⁄₄
63 (2.48)
¹⁄₄
80 (3.15)
¹⁄₄
80 (3.15)
F-85
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