Description

Product Overview

The GE GF868-1-2 is a high-performance ultrasonic gas flow meter engineered by GE Panametrics, designed for critical applications in industrial gas measurement, particularly in flare gas monitoring and vent gas management. As part of GE’s DigitalFlow series, this meter combines advanced ultrasonic technology with rugged industrial design to deliver accurate, real-time measurement of gas velocity, volumetric flow, and mass flow rates in harsh environments. The GF868-1-2 is optimized for challenging scenarios such as high-velocity gas streams (up to 120 m/s), multi-phase flows with entrained solids or moisture, and fluctuating gas compositions, making it ideal for oil & gas refineries, petrochemical plants, and power generation facilities.

Leveraging patented correlation transit-time technology and digital signal processing, the GF868-1-2 ensures drift-free measurements and minimal maintenance. Its modular architecture supports flexible configurations, including single- or dual-channel operation, and integrates seamlessly with temperature/pressure transmitters for compensated mass flow calculations. The meter’s intuitive interface and built-in data logging capabilities enable remote monitoring and diagnostics, while its rugged enclosure (IP66/NEMA 4X) withstands extreme temperatures (-40°C to +70°C), vibration, and corrosive atmospheres.

Technical Specifications

Parameter Name	Parameter Value
Product Model	GE GF868-1-2
Manufacturer	General Electric (GE)
Product Type	Ultrasonic Gas Flow Meter (Flare Gas/Vent Gas)
Measurement Technology	Correlation Transit-Time with TransFlection® Mode
Flow Range	0.03–120 m/s (standard: 0.03–100 m/s)
Accuracy	±1% of reading (volumetric), ±2% of reading (mass)
Repeatability	±0.1–0.3% of reading
Communication Interfaces	2x RS-485 (Modbus RTU), 1x Ethernet (Modbus TCP), 4–20 mA analog outputs, dry contact alarms
Transducer Type	Clamp-on or wetted (for permanent installation)
Pipe Size Compatibility	2–120 inches (50–3000 mm)
Power Supply	100–240V AC or 24V DC (±15%)
Operating Temperature	-40°C to +70°C (with optional heating for sub-zero environments)
Storage Temperature	-55°C to +85°C
Dimensions (Console)	300mm × 250mm × 150mm (11.8in × 9.8in × 5.9in)
Weight	8.5kg (18.7lbs) (console only)
Certifications	CE, UL, ATEX (Zone 1/21), IECEx
Data Logging	43,000-point internal memory for flow trends and events

Main Features and Advantages

Advanced Measurement Capabilities:

Dual-Mode Operation: Combines Transit-Time for clean gases and TransFlection® for multi-phase flows with up to 80% entrained solids or bubbles, eliminating the need for separate Doppler meters13.
Wide Rangeability: Achieves a 4,000:1 turndown ratio, accurately measuring from low base-load flows to high-velocity flare events3.
Molecular Weight Calculation: Patented algorithm determines average molecular weight in hydrocarbon mixtures, enabling precise mass flow compensation even with varying gas compositions3.

Rugged Industrial Design:

No Moving Parts: Fanless, maintenance-free design with conformal-coated PCBs to resist dust, moisture, and chemical corrosion38.
Hazardous Area Compliance: ATEX- and IECEx-certified for use in explosive gas or dust environments, ensuring safety in oil & gas facilities13.
Weatherproof Enclosure: IP66-rated console withstands high-pressure water jets and extreme temperatures, suitable for outdoor or offshore installations1.

Flexible Integration:

Multi-Protocol Support: Integrates with SCADA/EMS systems via Modbus RTU/TCP, and provides analog outputs for direct PLC/DCS connectivity715.
Dual-Channel Configuration: Optional dual-path measurement improves accuracy in turbulent flows or detects leaks by comparing readings from two pipe locations313.
Energy Measurement Option: Calculates energy flow in heating/cooling systems when paired with RTD inputs, supporting thermal management applications13.

User-Friendly Operation:

Graphical LCD Interface: Two independent displays show real-time flow data, trend graphs, and diagnostic waveforms, with configurable alarm thresholds1315.
Data Logging: Built-in logger captures flow events, error codes, and waveforms for post-fault analysis, accessible via USB or Ethernet815.
Remote Programming: Configurable via GE’s Panaview software or local keypad, with password-protected security features67.

Application Areas

The GE GF868-1-2 excels in gas flow measurement across industries requiring high accuracy and reliability:

Oil & Gas:
- Flare Gas Monitoring: Measures emissions to comply with environmental regulations and optimize combustion efficiency23.
- Wellhead/Process Gas: Monitors gas production in upstream fields and refinery process lines, detecting leaks or composition changes13.
Power Generation:
- Combustion Turbines: Ensures precise fuel gas metering for efficiency and emissions control.
- Biogas Plants: Measures methane-rich gases from digesters, supporting renewable energy integration2.
Chemical/Petrochemical:
- Vent Gas Management: Tracks fugitive emissions and recovers valuable hydrocarbons from vent streams3.
- Process Optimization: Provides real-time flow data for reactor feed control and batch processing13.

Installation and Maintenance

Installation Preparation:

Transducer Placement: Clamp-on transducers require at least 5D upstream and 2D downstream straight pipe runs for optimal accuracy. Wetted transducers are welded or flanged directly into the pipe313.
Console Location: Mount within 300m of transducers to minimize signal degradation. Use shielded cables for power and communication lines to reduce EMI813.
Calibration: Factory-calibrated for standard gases; field recalibration with NIST-traceable equipment is recommended annually for critical applications13.

Maintenance Advice:

Routine Checks: Inspect transducer alignment and cable connections quarterly. Clean console vents to prevent dust buildup.
Firmware Updates: Apply GE-released updates via USB or Ethernet to access new features and security patches715.
Error Handling: Use the built-in error log (up to 60 records) to diagnose issues like low signal (E1) or sound speed errors (E2), referencing the troubleshooting guide for corrective actions15.

Product Guarantee

GE provides a 12-month factory warranty for the GE GF868-1-2, covering defects in materials and workmanship. For mission-critical applications, optional premium service plans include:

Expedited Replacement: 48-hour turnaround for faulty components.
Onsite Calibration: Annual visits by GE-certified technicians.
24/7 Technical Support: Dedicated hotline for configuration and diagnostic assistance.

Every meter undergoes rigorous testing to meet IEC 61000-6-2/6-3 (EMC) and ANSI/ISA 88 standards, ensuring compliance with industrial best practices.

Brand Model: GE GF868-1-2
Product Name: Ultrasonic Gas Flow Meter (DigitalFlow Series)
Warranty: 1 year standard, optional extended plans available
Size: Console: 300mm × 250mm × 150mm (11.8in × 9.8in × 5.9in)
Weight: 8.5kg (18.7lbs) (console only)
Origin: USA
Inventory: Spot/Futures
Delivery Time: 3–4 weeks for standard configurations
Order Time: Custom configurations available within 8–10 weeks

Contact info

WhatsApp: +86 18030182217
Email: sandydcsplc@gmail.com
Phone: +86 18030182217
Wechat: +86 18030182217
Website: www.xiongbaparts.com

GE GF868-1-2 Ultrasonic Gas Flow Meter (Flare Gas/Vent Gas)(XIONGBA)