Thermal Mass Flow Meters Excel in Hydrogen (H2) Measurement

 Hydrogen is again a focus of global attention as a renewable energy fuel resource. Production processes from fossil sources, biomass and waste and H2O-splitting are capturing worldwide investor attention as brown, green, gray, and blue alternative fuels. It is also a key gas used in ammonia manufacturing in the agricultural chemicals industry, methanol production and other processes. Regardless of the source, accurate, repeatable and reliable flow meters are a critical component in the processes.

Hydrogen-calibrated thermal mass flow meters are well suited to meet the conditions of these applications. Thermal mass flow meters work based on the principles of heat transfer. H2 has a very high heat transfer rate and to measure it with high accuracy and repeatability, a thermal flow meter should be calibrated in actual H2. Applying theoretical gas equivalency equations to “correct” readings for H2 are simply inadequate and ineffective for this gas.

FCI’s ST Series thermal flow meters are calibrated under customer installation conditions in actual hydrogen to achieve superior installed accuracy and repeatability in their intended application. They are direct mass flow measuring and inherently multivariable providing both flow and temperature outputs.

The ST family offers solutions from small, compact meters with basic 4-20 mA analog output to feature-enhanced versions with multiple 4-20 mA outputs, digital bus communications such as HART, Modbus, Foundation Fieldbus, and PROFIBUS, in-situ calibration, self-checks, on-board data logging, and more. Furthermore, all FCI ST Series H2 flow meters are direct mass flow measuring, carry global agency approvals for installation in Div.1/Zone 1 environments, and offer superior ruggedness and long-life with NEMA 4X/IP 67 rated low-copper content aluminum or 316 stainless steel enclosures.

Standard turndowns of 100:1 and flow ranges from 0.25 to SFPS 1000 SFPS [0.07 NMPS to 305 NMPS] ensure their application versatility. The ST’s transmitter/electronics can be integrally mounted with the flow body or may be remote mounted to 1000 feet (305m) away. They are available in either DC or AC powered versions. Their readout/display options include basic flow rate and totalizer to a best-in-class multivariable digital/graphic backlighted LCD with FCI’s exclusive through-the-glass activated 4-button array.

Fluid Components International is a global company committed to meeting the needs of its customers through innovative solutions for the most challenging requirements for sensing, and measuring flow, pressure and temperature of gases.

As the only distributor in Romania, SIS will present more details HERE: