Description

GE GF868‑1‑21‑20414‑0‑0‑0 Ultrasonic Flare‑Gas Flow Meter Transmitter

Technical Specifications

• Product Model: GF868‑1‑21‑20414‑0‑0‑0
• Brand: GE (Baker Hughes)
• Warranty: One Year
• Input Voltage: 100‑240 VAC universal auxiliary power, 50‑60 Hz
• Operating Temperature: ‑40 °C ~ +85 °C field‑mount
• Storage Temperature: ‑55 °C ~ +90 °C
• Response Time: Flow measurement update cycle 1‑5 s configurable
• Protection Class: IP66 field‑housed transmitter; ATEX / IECEx hazardous‑area certified
• Accuracy Class: Flow measurement ±1.0 % of reading under calibrated conditions
• Output Frequency: Process frequency range 0.1‑100 m/s gas velocity
• Rated Current: 1.2 A maximum auxiliary power consumption
• Measurement Principle: Time‑of‑flight ultrasonic transit‑time gas flow measurement
• Process Compatibility: Multi‑component flare‑gas, hydrocarbon mixed‑gas, low‑velocity bi‑directional gas flow
• Signal Outputs: 4‑20 mA analog outputs; Modbus‑RTU RS‑485 digital communication; HART protocol support
• Diagnostics: Gas composition self‑check, signal‑strength monitoring, fault event logging
• Mounting: Wall‑mount or pipe‑mount transmitter enclosure; matched ultrasonic transducer pairs for large‑diameter flare stacks
• Dimensions / Weight: 320 mm × 245 mm × 160 mm; approx 6.2 kg
• 

Product Overview

The GF868‑1‑21‑20414‑0‑0‑0 is a GE GF868 series ultrasonic flare‑gas flow transmitter for flare‑stack emission monitoring. It applies transit‑time ultrasonic technology to measure mass flow, volumetric flow rate, average molecular weight and gas velocity of complex multi‑component flare‑gas without intrusive moving parts. The unit supports bi‑directional low‑velocity gas measurement, suitable for highly variable flare‑gas composition typical within refineries, petrochemical and chemical‑plant environments. It provides 4‑20 mA analog and digital Modbus‑RTU / HART interfaces to feed metering data to DCS and SCADA systems for emission reporting, flare‑loss accounting and plant‑safety supervision. The rugged IP66 hazardous‑rated field enclosure tolerates wide ambient‑temperature swings, high‑humidity and industrial vibration conditions.

This flare‑gas flow transmitter addresses non‑intrusive flare‑gas metering challenges: no‑moving‑part ultrasonic measurement, tolerance for variable gas‑composition, hazardous‑area field‑rated housing, multi‑protocol data output, drop‑in spare‑part compatibility for legacy GF868‑series retrofit‑maintenance projects. Process‑instrumentation engineers, refinery and petrochemical‑plant maintenance technicians and retrofit integrators benefit most. Typical applications: refinery flare‑stack emission‑monitoring cabinets, petrochemical‑plant flare‑gas mass‑balance supervision, industrial‑site waste‑gas flow measurement.