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304 SS Turbine Flow Meter with Signal Conditioning Option

Turbine Flowmeters with Economical Ball Bearing Design


Item# FTB-106

In stock

Lead Time (If not in stock): 7 weeks
Turbine Flowmeters with Economical Ball Bearing Design FTB-106 FTB-106
  • NIST Certificate Included for Water
  • ±1/2% Rdg Accuracy
  • Non-Metallic Bearing Retainers for Long Life
  • Replacement Bearings Field Installable Without Loss of Calibration

FTB-106 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Flow Range
Max Operating Pressure
Process Connection Size
Media type
Output Signal
Max Process Temperature
Wetted Materials
Process Connection Type

  • Accuracy Value ±½% of reading
  • Maximum Ambient Temperature 232°C (450°F)
  • Output Signal 4 to 20 mA
  • Minimum Ambient Temperature -268°C (-450°F)
  • Power Source 13 to 30 Vdc reverse polarity protection
The FTB-100 Series of turbine meters have a sealed ball bearing design for high accuracy performance (±½% of reading, not full scale) at an economical cost. The non-metallic bearing retainers minimize friction, thereby allowing these meters to be used with clean fluids that have poor lubricating properties ( i.e.water). Ball bearings also give the widest linear flow range, particularly in larger turbines. Bearing replacement and clean-up are fast and easy, since all internal parts are easily accessible by removing a single nut.

These turbine flowmeters have a low mass rotor design which allows rapid dynamic response, so they can be used in pulsating flow applications. Deflector cones eliminate downstream thrust on the rotor and allow hydrodynamic positioning of the rotor between the cones. This provides wider rangeability and longer bearing life than conventional turbine flowmeters. Integral flow-straightening tubes minimize the effects of upstream turbulence.
FTB-100 Turbine Meters are available with integral signal conditioners (as shown in photo) which provide scaled and unscaled frequencies, 4-20 mA, or 0-5 Volt outputs. Units without integral signal conditioners are supplied with mating connector for two-wire hook-up.

Accuracy: ±½% of reading
Repeatability: ±0.1% of reading
Maximum Temperature Range: -268 to 232°C (-450 to 450°F)
Maximum Intermittent Overrange: 150% of maximum range
Minimum Output Amplitude: 30 mV Peak-to-Peak Unscaled Pulse
Materials of Construction:
   Body: 304 stainless steel; 1/2 NPT bodies contain Silver Solder. 3/4 NPT and larger are welded.
   Rotor: 17-4 pH steel
   Bearings: Ceramic
Minimum straight pipe requirements: 10 pipe diameters upstream, 5 downstream

Model No. Fittings Linear Flow Range
Max Operating Pressure Max Pressure Drop Length
mm (in)
kg (lb)
FTB-101 ½ MNPT 1.32 to 13.2 0.35 to 3.5 5000 psig 3.0 psid 62 (2.45) 13,000 0.4 (1)
FTB-102 ½ MNPT 2.84 to 28.4 0.75 to 7.5 5000 psig 5.0 psid 62 (2.45) 10,000 0.4 (1)
FTB-103 ½ MNPT 4.73 to 36 1.25 to 9.5 5000 psig 5.2 psid 62 (2.45) 6,000 0.4 (1)
FTB-104 ¾ MNPT 6.62 to 61 1.75 to 16 5000 psig 3.0 psid 70 (2.75) 4,100 0.4 (1)
FTB-105 ¾ MNPT 9.5 to 110 2.5 to 29 4250 psig 5.0 psid 83 (3.25) 2,200 0.4 (1)
FTB-106 1 MNPT 15 to 227 4 to 60 3850 psig 5.1 psid 89 (3.5) 640 0.9 (2)
FTB-107 1¼ MNPT 23 to 352 6 to 93 3850 psig 4.3 psid 99 (3.88) 410 0.9 (2)
FTB-108 1½ MNPT 30 to 492 8 to 130 3000 psig 3.0 psid 111 (4.38) 230 1.4 (3)
FTB-109 2 MNPT 57 to 852 15 to 225 2500 psig 3.3 psid 121 (4.75) 120 1.8 (4)
FTB-110 2½ MNPT 95 to 1514 25 to 400 2250 psig 4.0 psid 154 (6.06) 62 2.3 (5)
FTB-111 3 MNPT 151 to 2460 40 to 650 2000 psig 4.0 psid 191 (7.50) 55 3.2 (7)
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Viscosity affects the reading? I.e. a sensor calibrated for water will have same readings when used for oil with viscosity between 25 to 75 cSt (viscosity changing by oil temperature) ?

Asked by: Gianfranco
Thank you for your inquiry about the turbine flow meter. Yes, the viscosity affects the reading and the turbine flow meter is calibrated for water and if you have a viscous liquid to measure, then, it will need to be specifically calibrated for that liquid for an additional cost as noted on the data sheet. Please note, in the event the temperature changes so does the viscosity and therefore, the calibration will be affected as a result. Highly recommend a positive displacement flow meter such as the FPD3000 series.
Answered by: Applications Engineer JC
Date published: 2021-06-01

1. Can the FLSC-C1-LIQ be mounted remotely from the FTB-101? Need to locate the signal conditioner away from the turbine meter due to high ambient temperature. 2. How is the FTB-101 wired-connector or pigtail? If pins, what connector is required?

Asked by: Rich Eng
Thank you for your inquiry. It is recommended not to separate the signal conditioner from the flow meter and in the event that it must, you can add 2-wire shielded cable from the 2 PINS of the turbine flow meter to reduce the electrical noise.
Answered by: Application Engineer JC
Date published: 2023-03-10

Is there somewhere I can download a 3D model of this flow meter?

Asked by: SKahle89
Thank you for your inquiry and unfortunately, Omega does not provide CAD or STEP files for their products.
Answered by: Application Engineer JC
Date published: 2021-03-18

I need to connect the FTB-102 with a PLC. Can this flowmeter generate a 4-20mA or a DC signal or even a digital pulse output which can be read on the controller to monitor flow through the meter?

Asked by: Roy_I
Thank you for your inquiring about this this flow meter. The FTB-100 series turbine flow meter self generates a sinusoidal wave and will need an amplifier such as the FLSC-AMP to amplify to a square pulse.
Answered by: JC ENGR
Date published: 2020-10-01

Are these good for zone 0?

Asked by: getbetterdatasheets
Thank you for your inquiry in regard to the turbine flow meter. The FTB-100 series coupled with the signal conditioner identified in the data sheet is ATEX rated, without it, unfortunately, no.
Answered by: Application Engineer JC
Date published: 2020-04-27

Do any of the pins connect with the body of the flow meter or housing the signal conditioner sits in?

Asked by: datasheets
Thank you for your inquiry about this flow meter. The turbine flow meter and signal conditioner are recommended to be purchased as a 'SYS' or system and they are scaled together to be used when received.
Answered by: Application Engineer JC
Date published: 2020-06-04

If the system with the signal conditioner is rated for Zone 0, why does the datasheet say the signal conditioner is only rated for Zone 1 and 2? Thanks,

Asked by: datasheets
Thank you for your inquiry. The system is only rated for Zone 1 and 2, not Zone 0.
Answered by: AS Engineer
Date published: 2020-05-06

Do any of the electrical connections have an electrical connection with the housing? Is it isolated? I'm using with a piece of equipment that requires an SELV power supply and equipment. The housing will be PE grounded.

Asked by: datasheets
The self powered flow meter does not come with an electrical housing. The body of the flow meter needs to be grounded if used in a noisy environment.
Answered by: ASE HPO
Date published: 2020-06-03
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