Emerson’s Rosemount QX1000 Continuous Gas Analyser for CEMS

Emerson has released its Rosemount QX1000 Continuous Gas Analyser, suitable for use in continuous emissions monitoring systems (CEMS) and many other applications
The QX1000 utilises paramagnetic detection for O₂ and quantum cascade laser direct absorption spectroscopy for all other gases to meet performance requirements. This integration of different technologies and a strong modular approach helps to provide a flexible, single-system solution for diverse application needs. The QX1000’s low-maintenance design also reduces lifecycle costs and downtime.
The QX1000 uses cold/dry technology, with a sample conditioning system transporting gas extracted from the process to the analyser via a thermoelectric chiller, which lowers the temperature to around 4 degrees Celsius, allowing most moisture to condense and drop out. Users can integrate the QX1000 into existing plant infrastructure, or it can be provided as part of an integrated Emerson system solution, including the sample conditioning system.
Beth Livingstone, global product manager, process gas, Emerson, said, “A major differentiator of the QX1000 is the integration of multiple advanced technologies within a single device, providing the best-fit solution for each measurement need. The QX1000 is not only the first of its kind, but it also marks the beginning of a portfolio of analysers designed to set new gas analysis standards.”
Measurements made by the QX1000 are suitable for CEMS applications due to the analyser’s high selectivity and accuracy. CEMS are required at the majority of sites a stack emitting gases to the atmosphere, and they are widely used in chemical, oil and gas, power generation, pulp and paper, refining, waste/wastewater, and other industries.
Utilising the high selectivity of laser-based measurement, this new analyser provides precise monitoring of complex gas streams while delivering continuous, real-time data. Off the shelf, it supports the measurement of key regulatory gases, including CO, CO₂, O2, NO, NO₂, and SO₂, with different configurations offering detection of one to four gases. Measurement of additional gases such as CH₄ and N₂O is also available.
The QX1000 eliminates moving parts that are prone to failure and frequent replacement, reducing maintenance and total cost of ownership. Its low-consumable technology is critical in the CEMS market, where ongoing operational costs can be a barrier. By reducing system downtime and maintenance requirements, the analyser enables end users to avoid costly penalties for taking systems offline, ensuring continuous compliance with regulatory requirements.