G2-Series-GP

Supported Applications

The Omega G2 Series General Purpose Indicating Flow Meters & Transmitters are designed for liquid flow measurement in thin fluids with viscosity less than 100 cP. The series is engineered to monitor clean fluids and supports applications including food and beverage processing, batching, blending, water systems, industrial fluids, plating solutions, ammonium handling, plant process water monitoring, chemical feed lines, and harsh chemicals such as sulfuric acid and bleach.

Fluid compatibility depends on the selected housing material: Stainless Steel is offered for most non-volatile products; Aluminum is specified for non-volatile petroleum-based products; and PVDF is provided for aggressive chemicals. The product overview explicitly states these meters are not intended for use with flammable liquids, and users must ensure fluids are compatible with both the housing and wetted components.

Operating Conditions & Performance

The G2 Series operates within an ambient temperature range of 0° F to 140° F (-18° C to 60° C) and a process fluid temperature range of -40° F to 250° F (-40° C to 121° C). Accuracy varies by model size and configuration. For the turbine only, accuracy is ± 2.0% for Model 05 (1/2 inch), ± 1.5% for Models 07 (3/4 inch) and 10 (1 inch), and ± 1.0% for Models 15 (1-1/2 inch) and 20 (2 inch). When configured with onboard computer electronics, accuracy improves to ± 1.5% for Model 05, ± 1.0% for Models 07 and 10, and ± 0.75% for Models 15 and 20.

Repeatability is specified as ± 0.1%, with PVDF models listed at ± 0.3%. The series supports flow rates ranging from 1 - 10 GPM (3.8 - 38 L/min) up to 20 - 200 GPM (76 - 760 L/min), depending on the model size.

Pressure ratings are material-dependent: Stainless Steel 316 SS is rated for 1,500 psi (102 bar); Aluminum for 300 psi (21 bar); High Pressure 316 SS for 3000 psi (207 bar); and PVDF for 100 psi (6.9 bar). ANSI Flange 316 SS ratings follow the flange rule, while Sanitary Flange 316 SS is limited by fitting, clamp size, and temperature.

Maximum particulate sizes are defined by model: Models 1/2 in., 3/4 in. and 1 in. support up to 0.005 inches (125 µm / No. 120 Mesh); Models 1-1/2 in. and 2 in. support up to 0.018 inches (500 µm / No. 35 Mesh).

Configuration Options

The G2 Series offers a modular design with configurable housing materials, process connections, electronic choices, and calibration options.

• Housing Materials: Available in Aluminum (Code A), Stainless Steel 316 SS (Code S), High Pressure 316 SS (Code H), and PVDF (Code P).
• Sizes: Model numbers correspond to internal diameters: 05 (1/2 inch), 07 (3/4 inch), 10 (1 inch), 15 (1-1/2 inch), and 20 (2 inch). PVDF is available in ½ in. and 1 in.
• Process Connections: Options include NPT (Female) threads, ISO (Female) BSPT (ISO 7 Designation RC), Tri-Clover® Flange fittings, and 150# ANSI Flanges (available on S10, S15 & S20 only). Sanitary flange options are available for specific stainless steel models.
• Electronic Choices: Configurations include no electronics, onboard computer electronics (Q9, QSI, QSB), or accessory output modules. The Q9 display adds 0.72 in. (18 mm) to the height and is available for Stainless Steel meters only with a high temperature local display option rated to 185° F/85° C.
• Output Signals: Available signals include Pulse Out (Unscaled), Scaled Pulse, RS485 [Modbus or BACnet], BTU Calculator, Bluetooth®, and 4-20 mA. Accessory modules such as the Conditioned Signal Module (Part No. 113435-10) and FM Approved* Remote Kit (Part No. 113275-10) are offered.
• Power Supply: The onboard electronics utilize a AAA Alkaline battery with a stated life of 2 years.

The enclosure rating is IP65 and NEMA 4. Wetted materials vary by housing: Stainless Steel models feature 316 SS rings, Tungsten Carbide shafts, PVDF rotors, and 96% Alumina Oxide Ceramic bearings; Aluminum housings use similar internal components; PVDF housings include Fluorocarbon (Optional PTFE) rings.

Key Product Differences

The G2 Series distinguishes itself through housing material selection tailored to fluid compatibility and pressure requirements. Stainless Steel models are designated for general non-volatile products, while High Pressure 316 SS variants support up to 3000 psi (207 bar). Aluminum housings are specified specifically for non-volatile petroleum-based fluids with a lower pressure limit of 300 psi (21 bar). PVDF models provide chemical resistance for aggressive media but are limited to 100 psi (6.9 bar) and smaller sizes.

Electronic configurations vary between basic turbine-only units, which require external signal conditioning, and integrated versions with onboard computer electronics that display engineering units locally. The Q9 Hi-Temp Riser Kit is an option for high-temperature environments on Stainless Steel models only. Process connection types are restricted by model size; for example, 150# ANSI Flanges are available only on S10, S15 & S20 sizes, while Tri-Clover® fittings span the full stainless steel range from S05 to S20.