DigitalFlow™ GF868 Datasheet
7Pages

Panametrics flare gas mass ultrasonic flowmeter with extended performance range Applications The DigitalFlow GF868 flowmeter is a complete ultrasonic flow metering system for: • Measures velocity, volumetric and mass flow • Flare gas • rack down or prevent losses from leakage with positive T material identification • ccount for total plant throughput of material A • Reduce cost of steam and fuel usage with proportional control • onserve energy by eliminating unnecessary flaring C • omply with government regulations for pollution control C • Vent gas • Hydrocarbon gases • Biogases • Digester gases • 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 very low to very high velocity, 4000 to 1 turndown ratio • Field-proven installation techniques • Built-in totalizers • Built-in power supply for pressure and temperature transmitters • 4000 to 1 turndown ratio • One or two channel/path configurations * Velocity maximum may be higher in sp

Flare gas mass flowmeter 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. mass flow rate. Temperature and pressure inputs enable the meter to calculate standard volumetric flow. For maximum accuracy, use the two...

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...

Flow measurement Patented Correlation Transit-Time mode Enclosures • Standard: Epoxy-coated aluminum weatherproof Type 4X/ IP66 Class I, Division 2, Groups A,B,C&D FM and CSA • Optional: Stainless steel, fiberglass, explosion proof, flameproof Dimensions • Weight 11 lb (5 kg) • Size (h x w x d) 14.24 in x 11.4 in x 5.12 in (362 mm x 290 mm x 130 mm) Channels • Standard: One channel • Optional: Two channels (for two pipes or two path averaging) Display Two independent software-configurable 64 x 128 pixel backlit LCD graphic displays Optional inputs/outputs There are four additional slots...

T5/T17 wetted flow ultrasonic transducers Temperature ranges Normal Temperature (NT): -55°C to 150°C Low Temperature (LT): -220°C to 100°C High Temperature (HT): -50°C to 250°C Extremely High Temperature (XT): -180°C to 300°C Pressure range Standard: -2 psig to 1500 psig (87.6 to 10300 kPa) Transducer materials • Standard: Titanium • Optional: Monel® or Hastelloy® alloys or SS316 Process connections Flanged and compression fittings Area classifications Explosion-proof Div. 1, Class I, Group C, D Optional: Group B upon request ATEX II 2 G Ex d IIC T4, T3 or T2 Gb IECEx II 2 G Ex d IIC T4, T3...

Flow accuracy Transducer type T17 wetted transducer Two paths Flow measurement range Standard range Extended range .1 to 394 ft/s (0.03 to 120 m/s) - non-bidirectional Applicable pipe sizes Design velocity accuracy from 1 to 394 ft/s (0.3 to 120 m/s) - refer to notes 1 and 2 below Transducer type T17 Wetted Transducer Two paths Calibrated velocity accuracy from 1 to 394 ft/s (0.3 to 120 m/s) — refer to notes 1 and 2 below Transducer type Mass flow accuracy 2 to 120 kg Molecular weight accuracy 2 to 120 kg/kmole ±1.8% to ±2% Net Heating Value (NHV) accuracy - refer to note 3 Typical accuracy...

Panametrics, a Baker Hughes business, provides solutions in the toughest applications and environments for moisture, oxygen, liquid and gas flow measurement. Experts in flare management, Panametrics technology also reduces flare emissions and optimizes performance. With a reach that extends across the globe, Panametrics’ critical measurement solutions and flare emissions management are enabling customers to drive efficiency and achieve carbon reduction targets across critical industries including: Oil & Gas; Energy; Healthcare; Water and Wastewater; Chemical Processing; Food & Beverage and...