The Limas UV analyzer, available in two variants (Limas23 and Limas21), is an integrated solution to measure oxides of nitrogen, sulfur dioxide and oxygen in a single instrument. In contrast to the alternative chemiluminescence technique, the Limas uses UV spectroscopy to measure nitrogen monoxide and nitrogen dioxide as individual species without the use of an ozone generator and converter. In the Advance Optima series, the Limas21 is one of up to four analyzer modules that can be integrated into a comprehensive CEMS solution. In the EasyLine series, the Limas23 can be combined with a Magnos28 for paramagnetic oxygen measurement or an electro-chemical oxygen sensor in the same analyzer housing. This enables the compact device to simultaneously perform the oxygen reference measurement, which is required for regulated emission monitoring. Since the Limas is a UV photometer, it has the additional advantage that the measured values are not influenced by moisture or carbon dioxide in the sample gas.
With the 2020 MARPOL Annex VI marine CEMS requirements and the new EU MCPD regulations taking force, we believe that the technologies built into the Limas UV analyzer will see a wide range of applications for many CEMS systems. And, to ensure that it will be compliant with the EU MCPD, the Limas21 and Limas23 are both fully certified according to EN14181. The EasyLine series offers an onboard automated QAL3 solution to monitor and document precision and drift in the analyzer.
The Limas UV analyzer anticipates and communicates imminent maintenance by means of condition-based status signals. The analyzer is automatically calibrated using a combination of atmospheric air and span gas-filled cells. The requirement for purchasing and permanently connecting calibration gas cylinders is thereby eliminated which flows through directly to savings in the procurement and maintenance budgets.