Setting the Standard in Continuous Opacity Monitoring
Model 4500 MkIII mounted on the stack

Dust monitoring

Setting the Standard in Continuous Opacity Monitoring

23 Jul, 2012

Published over 13 years ago. See the latest and most current information on Dust monitoring.

Land has launched the world’s latest available technology for both stack opacity and dust concentration monitoring.

The Land Model 4500 MkIII has reset the industry standard on compliance opacity and dust concentration measurement applications. Combining the unique features of three patented technologies, the 4500 MkIII achieves the highest available specification for the principal performance parameters, as defined by the internationally recognized ASTM Standard D6216. These industry-leading features make the MkIII one of the most accurate opacity monitor’s available today. Its excellent sensitivity makes it ideal for all current or future requirements in opacity and dust concentration measurement applications.

The Model 4500 MkIII user menu is intuitive and language independent. The user is guided through the menu with simultaneous text and icon menu prompts. This design feature eliminates the need to carry an operating manual or laptop to the installation location. Standard features include analog, digital and modbus outputs, making it suitable for a wide range of applications.

The 4500 MkIII includes options for adapter flanges, air purging and other accessories that make upgrading your existing opacity monitoring system quick and hassle free.

IET 36.2 Mar/Apr 2026

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