Series-TFP-GI

Supported Applications

The Dwyer Series TFP-GI Gas Turbine Flow Meters are designed for industrial, commercial, and laboratory flow applications involving clean dry gases. These meters utilize a turbine wheel with electro-optical detection to measure volumetric gas flow rates.

Operating Conditions & Performance

The series operates within a process temperature range of 41 to 131°F (5 to 55°C) and supports storage temperatures from 32 to 158°F (0 to 70°C). The maximum pressure rating is 40 psig (2.8 bar), with an enclosure rating of IP10 (NEMA 1).

Performance specifications include:

• Accuracy: ±3% of full-scale
• Repeatability: ±0.5% of full-scale
• Sensitivity: ±0.2% of full-scale per °C
• Linearity: ±3% of full-scale

The meters provide a linear 0 to 5 VDC output signal with a minimum load resistance of 2.5 kΩ, suitable for recording or data logging.

Configuration Options

Series TFP-GI models feature an integral display and are available in specific flow ranges defined by model number:

• TFP-GI03: 0.042 to 0.21 SCFH (0.02 to 0.1 LPM)
• TFP-GI04: 0.085 to 0.42 SCFH (0.04 to 0.2 LPM)
• TFP-GI05: 0.21 to 1.1 SCFH (0.1 to 0.5 LPM)
• TFP-GI06: 0.42 to 2.1 SCFH (0.2 to 1 LPM)

The series supports additional flow ranges up to 2.1 to 11 SCFH (1 to 5 LPM) in other model configurations.

Construction and Connections

• Housing Material: PPS Body
• Wetted Materials: PPS, acetal, sapphire, glass, epoxy, and fluoroelastomer
• Process Connection: Compression fitting (1/8" OD or 1/4" OD depending on model)

Electrical Requirements

• Power Supply: 11.5 to 15 VDC
• Connector Type: Four-pin power and signal connector (power adapter or mating cable required)

Key Product Differences

The Series TFP-GI is distinguished from the related TFP-GV series by its integral 3-1/2 digit LCD display, which shows flow rate in LPM. The TFP-GV variant provides voltage output without an integrated display.

Models differ primarily by their calibrated flow range and corresponding process connection size:

• TFP-GI03 through TFP-GI06 utilize 1/8" OD compression fittings with a dimension "A" of 3-27/64 inches.
• Higher flow models (e.g., TFP-GI07, TFP-GI08) utilize 1/4" OD compression fittings with a dimension "A" of 3-13/16 inches.

The series is CE marked. Accessories include the A-454 (115 VAC Power Adapter and Signal Cable), A-455 (230 VAC Power Adapter and Signal Cable), and A-456 (36" Mating Cable with Spliced Leads).