Analytical Instrumentation & Environmental Monitoring


Miniature cross-stack TDL analysers

June 2017 Analytical Instrumentation & Environmental Monitoring

Servomex has launched the Servotough Laser 3 Plus range of miniature cross-stack TDL (tuneable diode laser) gas analysers, which can be specifically optimised for combustion, ammonia slip and process control applications.

The new Combustion version is the latest addition to the range and can be optimised for O2, CO, or for a combination of CO and CH4 measurements. The Combustion CO and Combustion CO+CH4 models are a must for safety and control applications in gas-fired, oil-fired and coal-fired processes. They can monitor CO in flue gas to trim oxygen levels and optimise combustion efficiency and safety. The CO+CH4 version will also monitor light-off and running conditions to maximise safety.

The Combustion O2 version is optimised to measure oxygen in flue gas to control oxygen levels and optimise combustion efficiency. Uniquely, it uses up to two absorbance lines to measure oxygen from ambient to 1500°C, utilising air or nitrogen purge gases. The Process O2 and CO versions monitor oxygen and carbon monoxide in processes where such monitoring is vital for the safe, efficient and reliable running of the process, and is essential for safety applications.

Working in gas-fired, oil-fired and coal-fired processes, the emissions control Laser 3 Plus monitors ammonia slip in catalytic or non-catalytic NOX reduction systems, and is a must for low measurement ppm applications. All versions offer the benefits of fast response times, simple installation, low maintenance, annual verification, no contact with the process and average measurement across the process.

Rhys Jenkins, photometric product manager at Servomex, said: “Based around Servomex’s revolutionary Laser 3 Plus platform developed at our UK Technical Centre, the Laser 3 Plus analyser range is a remarkable 90% smaller and 80% lighter than many other comparable TDL analysers, while offering improved measurement availability and safety integration. As a consequence, the Laser 3 Plus’s compact size and dramatically reduced footprint offers unparalleled installation flexibility.”

Targeted at gas analysis in the hydrocarbon processing, fired process and power generation market sectors, the Laser 3 Plus is an upgrade of Servomex’s MiniLaser range.



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