Omega Products FTB311D User Manual

MICRO-FLOW METER

FTB300 Series

U NEMA 4X (IP56) Enclosure
U 6-Digit LCD
U Displays both Rate and Total
U Non-Volatile Programming and Total

The FTB300 Series of digital paddle wheels
are an economical choice for low flow rate
applications. They use Infra-red light beam
technology. Available connections include
¹⁄₈ FNPT, ¹⁄₄ FNPT and ³⁄₈" OD tube fittings.
Six available flow ranges as low as 30mL/
min to 7000 mL/min. Models without a display
have a 5 Vdc current sinking pulse output. Units with
displays have a 6-digit LCD, with up to 4 decimal
positions that display both flow rate and total. All units
include an open collector alarm output.

User selectable scale factors include: flow units,
(gallons, liters, ounces, and milliliters); time units
(minutes, hours, days). Users can also program custom
units. Programming values and total are stored in the
non-volitile memory. The total reset function can also
be disabled. Standard units have a clear PVC viewing
lens; a PVDF chemical resistant lens is available as an
option. The enclosure is weather resistant Valox PBT
and is rated NEMA 4X (IP56).

SPECIFICATIONS

Max Working Pressure:
PVC Lens: 9 bar (130 psig) at 21°C (70°F)
PVDF Lens (“-PVDF” Option):

150 psig (10 bar) @ 21°C (70°F)

Max Fluid Temperature:
PVC Lens, FNPT Connectors: 54°C (130°F) at 0 psi
PVDF Lens (“-PVDF” Option), Tubing Connectors:

93°C (200°F) at 0 psi

Accuracy: ±6% FS
Power: 9 to 28 Vdc
Sensor Type: Infrared light beam
Alarm Output: Open collector 30 Vdc max
Enclosure: NEMA 4X (IP56)

FTB321D shown
smaller than actual size.

Shipping Wt: 0.45 kg (1 lb)

Materials of Construction
Body, Paddle, Axle Material: PVDF
Connector Material

FNPT Connections: PVC
Tubing Connectors: PVDF
Viewing Lens Material Option

Clear See Through: PVC
Opaque Chemical Resistant: PVDF (optional)

O-Ring Seals: FKM (EPDM optional)
Compression Seal to Pump: PVC
Sensor Only
Models: 5 Vdc digital square wave (3-wire)
Output: 3-wire shielded cable, 1.8 m (6')

Accessories

Model No. Description
PSU-93 24 Vdc power supply
TX4-100 4-conductor hook-up wire, 30 m (100')

F

To Order Visit omega.com/ftb300_series for Pricing and Details

Indicator Model No. (with display) Sensor Model No. (no display) Range
¹⁄₈ FNPT ¹⁄₄ FNPT ³⁄₈" OD Tube ¹⁄₈ FNPT ¹⁄₄ FNPT ³⁄₈" OD Tube L/min GPH
FTB311D FTB321D FTB331D FTB311 FTB321 FTB331 0.03 to 0.3 0.48 to 4.7
FTB312D FTB322D FTB332D FTB312 FTB322 FTB332 0.1 to 1 1.6 to 15.8
FTB313D FTB323D FTB333D FTB313 FTB323 FTB333 0.2 to 2 3.2 to 31.7
FTB314D FTB324D FTB334D FTB314 FTB324 FTB334 0.3 to 3 4.8 to 48
FTB315D FTB325D FTB335D FTB315 FTB325 FTB335 0.5 to 5 7.9 to 79
FTB316D FTB326D FTB336D FTB316 FTB326 FTB336 0.7 to 7 11.1 to 111

Comes complete with operator’s manual.
To order unit with PVDF lens, add suffix “-PVDF” to model number, no additional charge.

To order unit with EPDM O-rings add suffix “-EPDM” to model number, no additional charge.

Ordering Examples: FTB323D, micro-flow meter with display, 0.2 to 2 L/min range,
FTB331D, micro-flow meter with display, 0.03 to 0.3 L/min range,

3

" OD tube connections.

⁄

8

F-86

1

FNPT connections.

⁄

4