The GF03 flowmeter features a sensing element that boasts precision thermal mass flow and gas composition sensors. It promises the accuracy, range, and resolution required to meet the most stringent air pollution regulations at total installed costs of up to 50 percent less than alternative technologies. It is designed specifically for flare systems and similar variable gas applications, regulatory emissions monitoring and reporting, continuous and event flow volume measurement, process leak detection/isolation and reduction, tributary and vent gas monitoring, loss control, material balancing, and pilot/purge gas monitoring.
Flow measurement with the GF03 is said to help improve process efficiency and plant safety as well as reporting the gas flow rate and the totalization of gas emissions to remain compliant with all current air quality regulations.
The GF03's temperature-compensated thermal mass flow and gas composition sensor assembly continuously measures mixed gas and applies a special flow correction technique (FCI patent pending) to report flow rate and total flow. The flow sensor is housed in an all-welded 316L stainless steel enclosure, which means there are no holes to leak, clog, or foul. Its single-insertion probe simplifies installation with only one device placed in the flow stream and reduces tap points to the fewest possible, which minimizes pressure drop and the potential for leaking.
The flowmeter meets or exceeds regulatory agency specifications for +5 percent accuracy, with repeatability of +0.5 percent of reading over a wide flow range from 0.75 to 600 SFPS. Its performance and programmable outputs mean it is equally effective for reading and reporting the low flows that occur during a leak and the high flow rates that occur with a major flaring event.
The GF03's display and transmitter unit features a large LCD digital readout, rugged keyboard, user scaleable and programmable 4-20 mA outputs, an RS232C digital I/O communications port, and two user programmable 10 A relays. The enclosure, which is NEMA Type 4X (IP66) rated for weatherproof outdoor installation, can be integrally mounted to the flow element or can be panel or wall mounted up to 1,000 ft away. Options include a NEMA 7 explosion-proof housing, in-situ cleaning nozzle, and communication buses such as Modbus, Profibus, HART, and Ethernet.
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