The PCME VIEW 580 is a cross-stack optical system suitable for monitoring particle emissions from combustion boilers and emissions controlled by electrostatic precipitators. Mains power and a choice of user outputs are wired directly to the instrument avoiding the need for a separate control unit and providing a stand-alone solution, or allowing simple integration into an existing CEM system. The PCME VIEW 580 can be used in processes where either direct Opacity (and extinction) measurement is required, or dust concentration measurement for specific applications via calibration against the Standard Reference Method.