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Product Groups
Turbine Flowmeters with Local Digital Display
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
FTB790 Series
  • Both Rate and Total Indication
  • Percent Reading Accuracy
  • 6-Digit Display
  • FM Approved (Standard unit only)
  • Signal Output Capabilities
  • Reads GPM or LPM (Field Selectable)
  • Battery Operated
 Manuals (contact with email : [email protected])


FTB790 Series turbine meters with microprocessor-based electronics offers a durable, compact, high-precision fluid measurement device, with total and rate indication. Information is clearlydisplayed on a large 6-digit liquid crystal display with only 2-point floating decimal for totals from0.01 to 999,999. All operations are easily performed with only 2 buttons.

The basic unit and display are powered by 2 lithium batteries, providing up to 5 years of use.Cumulative total, batch total, and rate of flow are standard. A single-point field calibrationcurve can be stored in memory.

The turbine meter can also be ordered without display electronics. A special pulse output model (FLSC790-P-ND) must be ordered to obtain an open collector current sinking output operated on 9 to 35 Vdc. The output is a square wave pulse with a 3-wire connection.

Accessories for Turbine Meters With the Display:
The FLSC790-MA provides a 4 to 20 mA or 0 to 5 Vdc output for rate indication. The output module requires field calibration. The 4 to 20 mA dc is a 2-wire system requiring 8 to 30 Vdc power (24 Vdc recommended).

The FLSC790-P pulse output module provides an unscaled open collector sinking output operatingon an applied voltage of 0 to 60 Vdc. The output is a square wave pulse with an amplitude thesame as the supplied voltage.

The FLSC790-P-DC external power module for the FLSC790-P, allows for 9 to 30 Vdc external power forthe pulse output. Internal batteries in the display can be used as an auxiliary power source.

The FTB790-RK remote kit allows remote mounting of display electronics. This option expands the applications into wider fluid temperature ranges to -40 to 121°C (-40 to 250°F). The LCD display can be mounted up to 90 m (300') from the turbine meter.

The FTB790-RK-FM is an FM approved remote kit. It allows the display electronics to be mounted ina hazardous area up to 30 m (100') from the turbine meter and for fluid temperatures of -40 to 121°C(-40 to 250°F).

The FLSC790-BATT is the replacement battery for the display electronics. Batteries provide 5 years of use.

The FLSC790-90D is a 90° mounting adaptor designed to allow displays to be mounted 90° from thestandard position.

    FTB-791: ±2% rdg
    FTB-792, FTB-793: ±1.5% rdg
    FTB-794, FTB-795: ±1.0% rdg
Repeatability: ±0.1%
Pressure Rating:         1500 psig (103 bar)
    With "-HP" option:  3000 psig (207 bar)
Temperature Range:
    With Remote Electronics Kit: -40 to 121°C (-40 to 250°F)
    Without Remote Electronics: -10° to 60°C (14 to 140°F)
Viscosity: Rated accuracy for fluids with viscosity of water (1 cSt); meters with display can be used for fluids up to 100 cSt with field calibration
Wetted Components:
    Housing: 316 SS
    Journal Bearings: Ceramic (96% alumina)
    Shaft: Tungsten carbide
    Rotor and Supports: PVDF
    Retaining Rings: 316 SS
Display: 6-Digit LCD indicates flow rate, batch and cumulative total
Battery Life: 5 years
FM Approvals: Standard turbine meters only with display and no accessories are FM approved for Class 1, Div. 1 (Sanitary and high pressure units are not FM approved)(Models with "-ISO" threads are not FM approved).hazardous environments

Model No.
No Display
Model No.
Pressure Drop
mm (in)
Weight with Display
kg (lb)
Optional Pulse Nominal
FTB791-ND FTB791 1/2 FNPT 1 to 10
(3.8 to 37.9)
8.0 psi 107 (4.2) 1.0
FTB792-ND FTB792 3/4 FNPT 2 to 20
(7.6 to 75.7)
7.5 psi 109 (4.3) 1.1
FTB793-ND FTB793 1 FNPT 5 to 50
(18.9 to 190)
5.0 psi 114 (4.5) 1.3
FTB794-ND FTB794 1-1/2 FNPT 10 to 100
(38 to 380)
4.0 psi 135 (5.3) 2.1
FTB795-ND FTB795 2 FNPT 20 to 200
(76 to 760)
10 (38) 4.0 psi 3.1
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