Supplier BARTON 7400 Series Gas Turbine Flowmeter
WWW.DISTRIBUTORALATINDUSTRI.COM | Supplier BARTON 7400 Series Gas Turbine Flowmeter The BARTON 7400 Series Gas Turbine Flowmeter, manufactured by Sensia Measurement (formerly Cameron / NUFLO / BARTON), is a high-precision turbine flowmeter designed for accurate measurement of clean, dry gases in custody transfer, natural gas production, gas transmission, petrochemical processing, industrial gas distribution, aerospace, and refinery applications. The flowmeter provides highly accurate volumetric gas flow measurement with excellent repeatability, fast response, and low pressure loss, making it suitable for both fiscal and process metering applications.
Supplier BARTON 7400 Series Gas Turbine Flowmeter
The Series 7400 operates on the turbine flow measurement principle. As gas flows through the meter body, it passes through a precision flow conditioner and diffuser that directs the gas onto a multi-blade stainless steel turbine rotor. The rotor rotates at a speed directly proportional to the volumetric flow rate. A magnetic reluctance pickup coil mounted externally detects the passage of each rotor blade and generates a high-frequency sinusoidal pulse signal. The frequency of this pulse output is directly proportional to the gas flow rate, allowing accurate interfacing with electronic flow computers, totalizers, RTUs, PLCs, SCADA systems, and custody transfer equipment without requiring analog-to-digital conversion.
One of the principal advantages of the BARTON 7400 Series is its extremely fast rotor response, measured in milliseconds, enabling accurate measurement even when gas flow changes rapidly. The lightweight, low-inertia rotor minimizes bearing loads while providing exceptional repeatability and long-term stability. Standard repeatability is ±0.2% of flow rate, while linearity is typically better than ±1.0% of reading over the calibrated flow range.
The meter features a symmetrical bi-directional design, allowing accurate measurement of flow in either direction. Optional dual pickup coils provide redundancy or enable automatic flow direction detection. The rugged construction incorporates a 316 stainless steel body and internals, while the rotor is manufactured from 430 stainless steel and supported by sealed, self-lubricating precision bearings designed for a maintenance-free service life of up to 10 years under normal operating conditions.
The Series 7400 is available in threaded and flanged configurations with nominal sizes ranging from ¾ inch to 12 inches. Threaded models are offered with NPT or BSP connections, while flanged models comply with ASME B16.5 pressure ratings. Depending on meter size, pressure ratings reach up to 5,000 psi (345 bar) for smaller threaded models, making the flowmeter suitable for high-pressure natural gas service. Operating temperatures range from −29°C to +150°C as standard, with optional cryogenic versions capable of operation down to −196°C.
Each meter is factory calibrated using a multi-point water calibration to establish its average K-factor, verifying linearity and repeatability. For applications requiring enhanced low-flow performance or fiscal verification, optional gas calibration is available using gases with densities similar to the operating process gas. Installation in accordance with AGA Report No. 7 recommendations, including appropriate upstream straight pipe lengths and filtration, ensures the specified performance is achieved.
Technical Specifications
| Parameter | Specification |
|---|---|
| Equipment Type | Gas Turbine Flowmeter |
| Brand | BARTON |
| Manufacturer | Sensia Measurement (formerly Cameron / NUFLO / BARTON) |
| Series | 7400 |
| Measuring Principle | Turbine Flow Measurement |
| Measured Fluid | Clean, Dry Gases |
| Accuracy | Better than ±1.0% of Reading |
| Repeatability | ±0.2% of Flow Rate |
| Output Signal | Magnetic Pickup Coil Frequency Pulse (Sine Wave) |
| Rotor Material | 430 Stainless Steel |
| Body Material | 316 Stainless Steel |
| Internal Components | 316 Stainless Steel |
| Bearing Type | Sealed Self-Lubricating Precision Bearings |
| Meter Sizes | ¾ in to 12 in |
| Process Connections | NPT, BSP Threaded or ASME B16.5 Flanged |
| Maximum Pressure | Up to 5,000 psi (345 bar), depending on size |
| Operating Temperature | −29°C to +150°C (Standard); Optional −196°C Cryogenic Version |
| Installation | Horizontal or Vertical |
| Calibration | Factory Multi-Point K-Factor Calibration |
| Communication | Compatible with Flow Computers, Totalizers, RTUs, PLC, SCADA |
| Optional Features | Dual Pickup Coils, Flow Direction Detection, Pre-Amplifier, Remote Electronics |
Key Features
- High-accuracy turbine gas flow measurement
- Repeatability of ±0.2% of flow rate
- Linearity better than ±1.0% of reading
- Millisecond rotor response for rapidly changing flow conditions
- High-frequency digital pulse output
- Symmetrical bi-directional flow measurement
- Maintenance-free sealed bearings with long service life
- Low pressure drop across the meter
- Rugged 316 stainless steel construction
- Available in threaded and flanged configurations
- Compatible with flow computers, SCADA, PLCs, and custody transfer systems
- Factory multi-point calibrated K-factor
- Suitable for high-pressure and cryogenic gas applications
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