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Dependable gas flow measurement for industrial pollution control and monitoring


The engineering team at a coal-fired electric power plant utilising ammonia (NH3) for nitrous oxide (NOx) removal by its pollution control system installed the ST100 Series thermal flow meter from Fluid Components International (FCI) based on its superior repeatability in measuring NH3 under harsh operating conditions.


The ST100 Series flow meter allowed the plant team to optimise its selective catalytic reduction (SCR) system. This step improved performance while substantially reducing NH3 consumption and costs. The meter, with its rugged thermal dispersion sensor head, provides a highly repeatable measurement solution to control vaporised NH3 in such applications.


The engineers at the electric power plant were experiencing problems with inconsistent measurement of the vaporised NH3 injected into their flue gas as a means to reduce NOx emissions. The original system utilised a volumetric flow sensor, which wasn’t well suited for controlling the NH3 gas injection system. Switching to the mass flow sensing ST100 Series Meter, as opposed to taking a volumetric measurement, solved the false readings issue.


Given the ST100 flow meter’s standard wide flow turndown ratio of 100:1 (up to 1000:1 based on application), and the ability to measure mass flow, instead of volumetric flow, the engineers decided to conduct a pilot test. They installed the insertion style ST100A thermal flow meters on the primary vaporised ammonia feed lines to their nozzle grid for the test.


With the resulting improved measurement reliability, they took the project one-step further and installed in-line style ST100AL thermal flow meters at each of their nozzle locations. After proving out the benefits in one operating unit, they eventually instrumented the ammonia injection systems for all of the units within the facility.


The ST100 meter can be factory calibrated to measure virtually any popular process gas as well as mixed gases. The technology is suitable for use in wet and dirty gas applications, having no small ports prone to fouling. The basic insertion style air/gas meter features a thermal flow sensing element that measures flow from 0.25 up to 1000 SFPS (0.07 NMPS to 305 NMPS) with accuracy of ±0.75 percent of reading, ±0.5 percent of full scale. The basic in-line style meter is available for 2-inch and smaller line sizes.


The ST100 Series meter’s transmitter is unsurpassed in meeting both a plant’s current and future need for outputs, process information and communications. Whether the output required is traditional 4-20 mA analogue, frequency/pulse or advanced digital bus communications such as HART, Modbus, PROFIBUS, or FOUNDATION Fieldbus, the ST100 Series will meet your instrumentation integration needs. Its advanced bus communications are all third party certified and registered.


Developed with a graphical, multivariable backlit LCD display, the ST100 Series Meter brings new meaning to the term “process information”. Its sophisticated readout continuously displays all process measurements and instrument status for easy on-site viewing by technicians, and it has the ability to query for service diagnostics via an integral, optical HMI that does not require declassification of hazardous areas.


Designed for extreme industrial process and plant conditions, the ST100 Meter can be used in service up to 850ºF (454ºC) and is available with both integral and remote (up to 1000 feet [300 meters]) electronics versions. The ST100 meter is agency approved for hazardous environments, including the entire instrument, the transmitter and the rugged, NEMA 4X/IP67 rated enclosure.


Global approvals include: ATEX, CPA, CRN, EAC/ TRU CU, FM, FMc, FDT, GOST, IECEx, Inmetro and NEPSI. Third party failure rate data per IEC 61508 is available that demonstrates suitability of the hardware architecture for SIL 1 (HFT=0) applications.


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For More Info, email: email:


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JCT stands for reliable transfer of sample gas from the stack to the analyzer to ensure trust-worthy results


AIR MONITORING 15


Gas Sampling Probes


Acoem strengthens its environmental monitoring capabilities with the strategic acquisition of Met One Instruments, Inc.


Portable


Gas Conditioning Systems


With the world’s attention currently focused on air quality and climate action at the United Nation’s COP26 conference, now is a perfect opportunity to announce the convergence of two market leaders in the air quality monitoring sector — creating a single, stronger and more future-focused provider of holistic environmental monitoring solutions. Acoem is proud to welcome Met One Instruments (Met One) into the environmental division of its global company.


Sample Gas Compressor Coolers


This acquisition is a strategic game changer for Acoem and will solidify its position — not only as a major manufacturer of class- leading monitoring equipment, but also as the only truly all-inclusive environmental monitoring solution provider — offering in-house environmental service and maintenance capabilities and expert reporting and data analysis on a global scale. By combining its technology across all monitoring parameters, Acoem is accelerating its growth to leverage opportunities in a market that is seeing a dynamic shift from


government management to privatisation of environmental monitoring functionality around the world.


Met One Instruments, under the leadership of founder and CEO Tom Pottberg, has been developing innovative ambient air quality monitoring solutions from its headquarters in Grants Pass, Oregon for more than 30 years.


With the addition of Met One, Acoem gains access to the world’s leading particle measurement technology. It also enables the company greater collaborative opportunities and will allow it to significantly expand its research and development capabilities.


Together, the possibilities for precise, efficient and technologically advanced solutions for the capture and analysis of critical air quality data are limitless. Acoem believes in creating environments of possibility — helping find the right balance between progress and preservation, and empowering industries, government authorities, scientists and communities to make knowledgeable decisions based on reliable data.


Committed to shortening the path between environmental monitoring and informed action, Acoem has been designing and manufacturing class-leading multi-parameter environmental monitoring solutions for nearly five decades. It offers its global customers a complete range of integrated measurement technologies and services, ensuring that their data is accurate and the class-leading equipment they use operates with maximum efficiency.


The union widens the scope of options for customers to take advantage of a complete range of monitoring technologies and affiliated services from one company, covering the entire spectrum of environmental applications — including air, blast, water, wind and solar; noise and vibration; and tunnels and emissions.


Met One and Acoem share a common vision to enhance environmental productivity and regulatory outcomes for government agencies, industries and populations around the world. Since its inception, Met One has been involved in a close and symbiotic relationship with Acoem (whose air quality business was formerly known as Ecotech). The two businesses have worked collaboratively to establish some of the world’s most trusted brands for instruments in dust, particulate and gas monitoring respectively.


The timing of this merger is particularly fortuitous based on the challenges that humanity currently faces, with a global pandemic and significant environmental upheavals that need to be addressed.


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For More Info, email: email:


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WWW.ENVIROTECH-ONLINE.COM IET NOVEMBER / DECEMBER 2021


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