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GF90 and GF92 Mass Flow Meters

Product News Monday, May 7, 2007: Fluid Components International (FCI)

FCI’s GF90 and GF92 Mass Flow Meters Receive ATEX Approval for Air/Gas Service

With their intelligent microprocessor-based design and no-moving part thermal mass flow sensors that deliver high accuracy gas flow measurement, the precision GF90 Insertion and GF92 Inline Mass Flow Meters from Fluid Components International have now received ATEX approval for use in potentially explosive environments classified as EExd IIC T4.

FCI’s newly ATEX-approved GF90 and GF92 Mass Flow Meters are air/gas flow meters that have been designed to isolate their electronics from the danger of explosive hydrocarbon gases and other dangerous gases. The ATEX directive requires flow meters and other electrically-powered instruments and control devices meet specific design criteria to prevent explosions and fires in the presence of combustible gases.

FCI’s newly ATEX-approved GF90 and GF92 Flow Meters are designed with a precision thermal mass gas flow sensing element manufactured with 316 stainless steel and nickel-braze construction for superior performance in rugged environments. They feature turndowns of 1000:1, repeatability of +0.5 percent of reading or better and a flow rate accuracy of +1 percent of reading plus 0.5 percent full scale.

The GF90 and GF92 were developed for complex multi-gas or variable flow processes with an advanced microprocessor-based programmable transmitter. The GF Series transmitter can store up to three calibration groups. Each group can be independently configured for a specific calibration range, fluid, switch point settings, etc., to provide accuracy in complicated gas processes. These instruments are also inherently multi-variable, providing both flow and temperature measurements without any additional tap points.

The GF90 and GF92 each come with a standard NEMA Type 4X (IP66) rated transmitter enclosure, with configuration options for local or remote mount application. Optional Class I and II, Division 1 and 2, Groups B, C, D, E, F and G [EEx d IIC] transmitter enclosures are also available with agency approvals for FM, CSA and ATEX.

GF90 Insertion Flow Meter
The GF90 is a heavy-duty industrial flow meter designed for applications that include: flare gas, combustion air to boilers, scrubber balancing, exhaust stacks and more. It is suitable for use in ducts or pipes with a minimum 2-inch (50 mm) nominal inside diameter. Flow sensitivity ranges from 0.25 to 1600 SFPS (0.08 to 488 NMPS) at a standard temperature of 70°F (21.1°C) and pressure of 14.7 psia (1.013 bar (a). It is available for service in fluid temperatures from -100 to 850ºF (-73 to 454ºC) and pressures to 1000 psig [69 bar (g)].

GF92 Inline Flow Meter
The GF92 is a heavy-duty flow meter that offers excellent low-flow measurement characteristics and is ideal for applications such as compressor fuel monitoring, nitrogen purge monitoring, digester gas monitoring and hydrogen make-up gas. It can be used in tubing or pipe lines ranging in size from 0.125 to 3 inches (3.2 to 76mm). Flow sensitivity ranges from 0.006 to 2000 SCFM (0.01 to 3398 NCMH) at a standard temperature of 70°F (21.1C) and a pressure of 14.7 psia [1.013 bar (a)]. It operates in fluid temperatures from -50 to +350°F (-45 to 177°C) and at pressures to 1000 psig [69 bar (g)].