FLR1000-Series

Supported Applications

The Omega FLR1000 Series and FLR1000ST Series are low flow turbine meters designed for measuring extremely low flow rates from 20 mL/min to 5 L/min. These sensors are suitable for industrial, commercial, and laboratory applications involving liquid or gas media.

Operating Conditions & Performance

The series delivers an accuracy of ±1% FS (liquids) and ±3% (gases), with repeatability specified as ±0.2% FS for liquids and ±0.5% FS for gases. The FLR1000 Series operates within a process temperature range of 0 to 50°C (32 to 122°F). For the stainless steel construction, the FLR1000ST Series supports an ambient operating temperature of 5 to 55°C (41 to 131°F) and storage temperatures from 0 to 70°C (32 to 158°F).

Pressure ratings vary by series and media. The FLR1000 Series supports up to 40 psi at 20°C (68°F) for gas, 100 psi for liquid, and 500 psi for brass units using liquid services. The FLR1000ST Series is rated for a maximum of 34 bar (500 psig).

Configuration Options

The series offers extensive configuration options across housing materials, output signals, and display availability.

• Housing Materials: PPS or Brass Construction for the FLR1000 Series; Stainless Steel Construction (316 SS) for the FLR1000ST Series. Wetted parts include 40% glass filled polyphenelene sulfide, sapphire shaft and bearing, FKM rubber O-rings, Pyrex® glass, epoxy, and stainless steel bearing support.
• Output Signals: Models are available with Pulse Output, 0 to 5 Vdc, or 4 to 20 mA signals. The FLR1000ST Series includes specific model variants for voltage output (e.g., -D suffix) and current output (e.g., -I suffix).
• Display Options: Units are offered with or without a display. Display models feature dimensions of 76 x 44 x 89 mm (3 x 1.75 x 3.5"), while non-display units measure 60 x 42 x 37 mm (2.35 x 1.65 x 1.25").
• Process Connections: Acetal Tube Fittings are available in sizes ranging from 1/8" to 1/2", selected based on the specific flow range model.
• Electrical Connection: A 4-pin male connector is included with a 0.9 m (3') cable for both power and signal transmission.

Power supply requirements differ by output type: FLR1000 Series requires 11.5 to 15 Vdc regulated, 30 mA typical; Voltage Output Models of the FLR1000ST Series require 11.5 to 12.5 Vdc (0.4 W @ 12 Vdc); Current Output Models of the FLR1000ST Series require 18 to 24 Vdc (1.2 W @ 24 Vdc), 50 mA.

Key Product Differences

The series is divided into two primary construction families: the standard FLR1000 and the stainless steel FLR1000ST. The FLR1000 Series utilizes a Pelton-type turbine wheel with an electro-optical system for gas flow measurement, while the FLR1000ST Series provides stainless steel wetted parts.

Model numbering distinguishes between media type and output configuration:

• Gas Models (FLR1001–FLR1206): Cover flow ranges from 20 to 100 mL/min up to 40 to 200 L/min. These models are available with optional brass body (-BR) and display options.
• Liquid Models (FLR1007–FLR1013): Cover flow ranges from 13 to 100 mL/min up to 1 to 10 L/min. These models offer pulse output (-P), brass body (-BR), and display options.
• Liquid Stainless Steel Models (FLR1007ST–FLR1013ST): Provide the same liquid flow ranges as FLR1007-1013 but with 316 SS construction. Variants include no display, voltage output (-D), and current output (-I).

Optional accessories include power supplies (FLR1000-PW for 115 Vac, FLR1000-230PW for 230 V with European connector) and replacement cables. Calibration options are available by adding the suffix “-NISTAIR” for a 4-point NIST calibration for air or “-NISTWATER” for water (FLR1007 calibrations are 3-points).