Panametrics flare gas mass ultrasonic flowmeter with extended performance range The DigitalFlow GF868 ultrasonic flowmeter uses the patented Correlation Transit-Time™ technique, digital signal processing, and an accurate method of calculating molecular weight. Add to these features the inherent advantages of ultrasonic flow measurement reliability with no routine maintenance, high accuracy, fast response, and wide rangeability, the DigitalFlow GF868 flowmeter is the clear choice for flare gas applications. PANA015DS Rev. 2

The DigitalFlow GF868 flowmeter is a complete ultrasonic flow metering system for: • Track down or prevent losses from leakage with positive material identification • Measures velocity, volumetric and mass flow • Standard velocity range to 100 m/s (328 ft/s) standard • Extended velocity range to 120 m/s (394 ft/s)* • Measures instantaneous average molecular weight • Measures Net Heating Value (NHV) of vent gas in BTU/SCF, MJ/m3, or KJ/m3 • Measures hydrocarbon gases • Self-calibration check assures accurate worry-free operation • Delivers accurate flow rate, independent of gas composition • Measures...

Patented molecular weight measurement method The DigitalFlow GF868 uses a patented method for calculating the average molecular weight of hydrocarbon mixtures. This proprietary algorithm extends the range for measuring average molecular weight, while improving accuracy and compensating for non-hydrocarbon gases better than ever before possible. Higher accuracy mass flow data and more precise knowledge of flare gas composition can improve the efficiency of plant operation, enabling correct metering of steam injection at the flare tip, rapid troubleshooting of leaks into the flare stream, early...

One meter, wide range of flow conditions High flow The DigitalFlow GF868 meter achieves a new standard rangeability of 3280 to 1 and a new Extended Range rangeability of 4000 to 1. It measures velocities from 0.1 to 328 ft/s (0.03 to 100 m/s) standard in both directions, while the Extended Range version measures velocities to 394 ft/s (120 m/s) in one direction, in steady or rapidly changing flow, in pipes from 2 in to 120 in (50 mm to 3 m) in diameter. With this range of operation, one DigitalFlow GF868 flowmeter performs measurements under most of the conditions that may occur in a flare line...

Flow Patented Correlation Transit-Time mode Standard: Epoxy-coated aluminum Can be configured for Class I, Division 2, Optional: Stainless steel, weatherproof Can be configured for Class I, Division 2, Groups ABCD, NEC & CEC Explosion proof Class I, Division 1, Groups BCD, NEC & CEC Ex d IIC T6 Gb, IECEx & ATEX (II 2G) Optional: Two channels (for two pipes or Display Two independent software-configurable 64 x 128 pixel backlit LCD graphic displays Optional inputs/ There are four additional slots available for outputs any combination of the following I/O boards: • Analog output board with four...

DigitalFlow™ GF868 Datasheet I PANAMETRICS Temperature Normal Temperature (NT): -55 C to 150 C Pressure range Standard: -2 psig to 1500 psig (87.6 to 10300 kPa) Transducer Standard: Titanium Materials Hastelloy® alloys or SS316 (Monel® Consult factory) Process Flanged and compression fittings Hazardous Area Explosive-proof Class I, Division 1, CD classifications Optional: Group B upon request An integrated XAMP preamplifier may be installed in the certified assembly. In-line XAMP preamplifier with BNC connections; one per transducer. • Optional: 2 and 10 (factory selected) Location Installation...

±0.5% at 1 to 394 ft/s (30 cm/s to 120 m/s). Consult factory for details.General installation straight run requirement20D upstream and 5D downstream without CFD analysis.5D upstream and 2D downstream with CFD analysis. Consult factory for details. 1. T17 available in NT/ht/lt/xt; T5MAX only available in NT. T5 and T5MAX are available in both Bias 90 and 180 configuration while T17 is only available in 180 configuration. 2. Accuracy and sensitivity are dependent on pipe diameter, molecular weight and temperature. All accuracy specs assume molecular weights greater than 24 kg/ kmole and temperatures...