FTB700-Series

Supported Applications

The Omega FTB700-Series consists of flanged-mounted inline turbine flow meters designed for measuring fluid flow in pipes ranging from 2" to 8". These precision instruments are engineered specifically for water and water-based fluids, as well as non-lubricating fluids. The series identity is defined by a single moving part—a helical rotor—utilizing high-quality jewel bearings (sapphire journal with ruby endstone) to ensure long life in these media.

Operating Conditions & Performance

The FTB700-Series offers two primary body material configurations, each with distinct operating envelopes:

• PVC Body Meters (Sizes 2"–6"): Rated for a maximum process temperature of 120°F (50°C). The pressure rating is 150 psi @ 75°F (10 bar @ 24°C), with derating required at higher temperatures.
• Carbon Steel Body Meters (Sizes 2"–8"): Rated for a maximum process temperature of 200°F (93°C). The pressure rating is 200 psi (14 bar).

Accuracy across the series is specified as +/- 1% of full scale. Flow ranges vary by pipe size and material, spanning from 2 to 150 GPM for 2" meters up to 30–3000 GPM for 8" carbon steel models.

Configuration Options

The series supports multiple electronic configurations and mechanical options tailored to specific installation needs:

• Sensor & Electronics Options:
  • Pulse Output (0–75 pulse/second current sinking)
  • FTB700-D: Powered Rate/Totalizer with 6-digit autorange rate and 8-digit total display; includes NEMA 4X enclosure.
  • FTB700-T: Blind 4–20 mA transmitter (isolated) with response time of 3 sec, 95% FS or configurable averaging (2–60 seconds).
• Process Connections: PVC models feature optional flanges; Carbon steel models utilize 150 lb. drilling for sizes 3" through 8".
• Wetted Materials: Turbine inserts are CF8M cast stainless (Carbon) or solid PVC (PVC). Rotors are PVDF, with shafts made of Zirconia ceramic (sizes 3"–6" for PVC; 3"–8" for Carbon) and Tungsten Carbide (2").
• Electrical: Standard cable is #22 AWG 3-conductor, 18' long with a maximum run of 2000'. Power requirements vary by option: 6–24 Vdc for pulse output; 12–32 Vdc or 24–32 Vdc (for accuracy) for the FTB700-D; and 24–36 Vdc isolated for the FTB700-T.

Key Product Differences

The series is differentiated by body material, pipe size availability, and electronic integration:

• PVC Configuration (FTB7xx): Available in 2", 3", 4", and 6" sizes. These models utilize PVC Schedule 80 fittings for the meter body and solid PVC turbine inserts.
• Carbon Steel Configuration: Available in 2", 3", 4", 6", and 8" sizes. The meter body is painted carbon steel with CF8M cast stainless turbine inserts, offering higher temperature (up to 200°F) and pressure ratings.
• Electronic Models: Base models provide pulse output only. The FTB700-D variant adds a powered rate/totalizer display within a rugged cast aluminum housing rated NEMA 4X. The FTB700-T variant provides an isolated blind 4–20 mA analog transmitter.