Turbine Flowmeters with Local Digital Display - FTB790
FTB790 Series turbine meters with microprocessor-based electronics offers a durable, compact, high-precision fluid measurement device, with total and rate indication. Information is clearly displayed on a large 6-digit liquid crystal display with only 2-point floating decimal for totals from 0.01 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 calibration curve 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 operating on an applied voltage of 0 to 60 Vdc. The output is a square wave pulse with an amplitude the same as the supplied voltage.
The FLSC790-P-DC external power module for the FLSC790-P, allows for 9 to 30 Vdc external power for the 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 in a 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 the standard position.
SPECIFICATIONS
Accuracy:
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. with Display | FNPT Size | Range GPM (LPM) | Pressure Drop (psi) | Length mm (in) | Weight with Display kg (lb) | Optional Pulse Nominal K-Factor pulse/gal |
|---|---|---|---|---|---|---|---|
| FTB791-ND | FTB791 | 1/2 FNPT | 1 to 10 (3.8 to 37.9) | 8.0 psi | 107 (4.2) | 1.0 (2.3) | 2500 |
| FTB792-ND | FTB792 | 3/4 FNPT | 2 to 20 (7.6 to 75.7) | 7.5 psi | 109 (4.3) | 1.1 (2.5) | 1100 |
| FTB793-ND | FTB793 | 1 FNPT | 5 to 50 (18.9 to 190) | 5.0 psi | 114 (4.5) | 1.3 (3.0) | 565 |
| FTB794-ND | FTB794 | 1-1/2 FNPT | 10 to 100 (38 to 380) | 4.0 psi | 135 (5.3) | 2.1 (4.6) | 215 |
| FTB795-ND | FTB795 | 2 FNPT | 20 to 200 (76 to 760) | 10 (38) | 4.0 psi | 3.1 (6.8) | 100 |
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