Flow Meters Pollution Monitoring with Cems & Cerms
Engineers responsible for reporting stack gas emissions data to federal, state or local authorities will appreciate the optional Cems and Cerms applications package available with the next-gen MT100 Series Multipoint Thermal Mass Flow Meters from Fluid Components International (FCI).
FCI’s MT100 Series Flow Meters when specified with the optional Continuous Emissions Monitoring System (Cems) and Continuous Emissions Rate Monitoring System (Cerms) applications package meet the U.S. Environmental Protection Agency’s (EPA) 40 CFR Part 60 and 40 CFR Part 75, states the company. This package provides a 24-hour interval automated calibration drift test of low and high span points, and interference sensor check.
The MT100 meter’s optional Cems applications package includes both an automated and on-demand self-checking of calibration drift (CD) and sensor interference. The results of the Cems tests are presented as a simple pass or fail message on the LCD readout. The Cems option also includes two relay outputs for connection to external devices, one to signal test in progress and the other to signal a fail-test mode.
According to the company, the MT100 Series Air/Gas 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.
In heavy industries, such as electric power generation, petrochemical refineries and others, 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.
FCI’s thermal mass MT100 Series air/gas Flow Meters are available with two to eight flow rate sensing points to overcome these issues, opines the firm. 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.