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　　GC868-2-21-10416-0-0 Other Names:

　　Flare Flow Meter GC868-2-21-10416-0-0

　　GC868-2-21-10416-0-0 Ultrasonic Flare Gas Flow Meter

　　Ultrasonic Flow Meter System GC868-2-21-10416-0-0

　　The GE Ultrasonic Flare Gas Flow Meter GC868-2-21-10416-0-0 is a high-precision gas flow meter designed for flare systems by General Electric (GE). It incorporates the advantages of ultrasonic technology and is suitable for gas flow monitoring in harsh industrial environments.

　　Technical Features and Advantages

　　Ultrasonic Measurement Technology

　　Using the time difference (transit time method) or frequency change (Doppler method) of ultrasonic waves in a gas to calculate flow rate, it has no moving parts, preventing wear and clogging.

　　Suitable for flare systems with high flow rates, high temperatures, impurities, or corrosive gases, it offers high measurement accuracy and strong stability.

　　High-Precision Measurement

　　Accuracy: ±0.5% to ±1% (depending on the range and operating conditions), superior to traditional vortex or thermal flowmeters.

　　Turndown Ratio: Up to 100:1, adapting to scenarios with large flow fluctuations (such as intermittent discharge from flare systems).

　　Repeatability: ≤0.2%, ensuring long-term stability.

　　Strong Anti-interference Capability

　　Ultrasonic Path Optimization: Multi-channel design (such as 4 or 8 channels) reduces the effects of gas turbulence and temperature gradients on measurement.

　　Adaptive Algorithm: Automatically compensates for pressure and temperature changes, outputting mass flow without the need for an additional sensor (when a temperature/pressure transmitter is required).

　　Resistant to Harsh Environments

　　Material: The sensor is made of Hastelloy and 316L stainless steel, resistant to hydrogen sulfide and chloride ion corrosion.

　　Protection Rating: IP67 (dustproof and waterproof), suitable for outdoor use or in explosion-hazardous areas (Ex d/Ex ia certification required).

　　Temperature Range: -40°C to +200°C (high-temperature model optional), covering most flare operating conditions.

　　Low Maintenance Requirements

　　No pressure drop design reduces interference with gas flow and extends device life.

　　No-open-tank calibration, online diagnostics, and remote maintenance support reduce downtime costs.

　　Intelligent Features

　　Diagnostic Tools: Built-in self-test routines monitor sensor status and signal quality in real time, providing early warning of faults.

　　Data Logging: Supports historical data storage (such as 30-day trend logging) for easy analysis of emission patterns.

　　Communication Protocols: Compatible with HART, Modbus, and Foundation Fieldbus, seamlessly integrating into DCS/PLC systems.

　　Typical Application Scenarios

　　Petrochemical Industry

　　Refinery Flare: During petroleum refining and chemical production processes, large amounts of flare gas are generated, such as from catalytic cracking units and ethylene production units in refineries. The GC868-2-21-10416-0-0 flowmeter can be used to accurately measure the flow rate of these flare gases for energy management and environmental monitoring.

　　Chemical Plant Emergency Emissions: During production abnormalities, the flowmeter accurately measures the amount of gas burned through the flare to prevent environmental pollution.

　　Natural Gas Processing and Transportation

　　Gas Purification Plant: During the extraction, processing, and transportation of natural gas, some gases need to be discharged. Installing this flowmeter allows real-time monitoring of flare gas emissions to ensure production safety and environmental compliance.

　　Pipeline Venting System: Monitors gas emissions during pipeline maintenance or pressure regulation.

　　Environmental Protection and Carbon Trading

　　Carbon Emission Monitoring: Combined with a gas composition analyzer, this flowmeter calculates CO₂ equivalent emissions and supports carbon quota management.

　　VOCs Control: Quantify the combustion efficiency of volatile organic compounds and optimize the operation of environmental protection equipment.

　　Key Selection Parameters

　　Gas Characteristics

　　Composition: Identify the main gases (such as methane, hydrogen, and carbon dioxide) and impurity content to avoid sensor poisoning.

　　Pressure and Temperature: Provide the maximum/minimum values under operating conditions to select the appropriate range and material.

　　Pipeline Conditions

　　Pipe Diameter: The GF868 supports pipes from DN25 to DN3000. Ensure that the pipe inner diameter matches the flowmeter diameter.

　　Mounting Method: Horizontal or vertical installation requirements must be met. The straight pipe length (5D upstream, 3D downstream) must meet the requirements.

　　Output and Power Supply

　　Signal Type: 4-20mA (analog), RS485 (digital), or pulse output, selected based on the control system.

　　Power Supply: 24V DC or 220V AC, must match the on-site power supply.

　　Certifications and Standards

　　Explosion-proof certifications: ATEX, IECEx, NEPSI, etc. (applicable to Zone 1/Zone 2 hazardous areas).

　　Metrological certifications: MID, OIML, or domestic measuring instrument type approval certificates (to ensure compliance).

　　Installation and Maintenance Key Points

　　Pre-installation Inspection

　　Confirm that there are no impurities in the pipe to avoid scratching the sensor surface.

　　Check that the flowmeter direction arrow aligns with the gas flow direction.

　　Daily Maintenance

　　Regular Calibration: It is recommended to calibrate every 12-24 months, or adjust according to frequency of use.

　　Sensor Cleaning: Wipe the probe with a soft cloth, avoiding the use of corrosive cleaning agents.

　　Checking for leaks: Regularly tighten the connecting bolts to prevent gas leaks.

　　Troubleshooting

　　Abnormal signal: Check the power supply, grounding, and communication lines to confirm there is no electromagnetic interference.

　　Excessive flow fluctuations: Optimize the pipe layout to reduce turbulence, or adjust the flowmeter installation position.

　　Summary

　　The GE Ultrasonic Flare Gas Flowmeter GC868-2-21-10416-0-0, with its high accuracy, anti-interference capabilities, and intelligent features, is an ideal choice for gas monitoring in flare systems. When selecting a model, pay close attention to gas characteristics, pipeline conditions, and certification requirements, and leverage GE's global service network to ensure long-term, stable operation.

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