Flow Measurement Air/Gas Flow Meters for Large Diameter Pipes, Stacks and Ducts
Process and plant engineers in heavy industrial facilities responsible for optimizing combustion or pre-heated air to large boilers, stack emissions monitoring and reporting, or flue gas/scrubber balancing, will find the next-gen MT100 Series Multipoint Thermal Mass Flow Meters set a new standard, Fluid Components International (FCI) says.
In petrochemical refineries, large diameter pipes and ducts present unique challenges to achieve successful flow meter installation and performance. Hot, moist and/or dirty gases along with lack of pipe straight-run, distorted flow profiles, low flow rates and wide turndowns rates are common performance challenges for many flow metering technologies. The MT100 Series should set a new standard in performance accuracy, reliability, ease of use and value.
The flow meters combine state-of-art electronics technology with application-proven precision flow sensors in a rugged package designed for the most demanding plant operating environments. They provide temperature-compensated direct mass flow measurement of air and gases for precise, repeatable measurement with low maintenance requirements in large diameter pipes, stacks and rectangular duct installations. They are available with two to eight flow rate sensing points to overcome these issues.
Multiple sensors are inserted at various depths within a pipe or duct and their outputs are multiplexed and averaged to produce the flow rate within the process line.
The sensors can be installed either across a mast or can be inserted at multiple points around the process line in a single plane. In large stack applications, this means that the instrument installation can be done at a single platform location to achieve a major cost savings over other technologies such as ultrasonic meters, which require installing transducers at precise offset angles.
The meters can measure flow rates over a wide range from 0.25 to 1000 SFPS (0,07 to 305 NMPS) with 100:1 turndown and with an accuracy of ±0.75% of reading, ± 0.5% of full scale. They are also dual-function and can provide temperature measurement capability from -50 to 850 °F (-45 to 454 °C), with accuracy of ± 2 °F (± 1,1 °C).
The state-of-art transmitter for MT100 Series is both full-featured and rugged. It comes with an extensive choice of output options to interface with virtually any DCS, PLC, Scada, or recorder. Dual, isolated, high resolution 4-20 mA outputs compliant with Namur NE43, Hart (Fieldcomm Group certified), Modbus, 0-1kHz frequency/pulse and a USB port are all included, standard. Optionally available are Foundation Fieldbus and Profibus-PA bus communications.