Perlite Moisture

The USGS-estimated $24.5 million perlite industry depends on the accurate measurement of perlite moisture to support end uses for building construction products, horticultural aggregate, filtering, and other applications. Each application usually requires perlite of a specific particle size and/or density. For example in the construction industry, some plasters require finely meshed perlite particles for a flawless finish. In the horticultural industry, perlite used in fertilizer application is much more coarse in size, allowing each particle’s larger surface area to carry greater amounts of fertilizer product into the field. Perlite moisture must be controlled throughout the refinement process of all mesh grades to ensure consistency and to meet end use application requirements.

MoistTech’s Solution

The IR-3000 near infrared (NIR) online moisture transmitter provides instant, non-contact measurement of moisture during the refinement of perlite in any industrial setting. What makes the IR-3000 well suited to the perlite refinement process is its insensitivity to particle size. From the finest of fines to extremely coarse grades of perlite, the IR-3000 is unsurpassed in accurate moisture measurement, making it the ideal solution for controlling perlite moisture in your process. 


The sensor of the IR-3000 can be installed at any point along the refinement process, from bed dryers to screw and drag conveyors or down chutes. The online moisture transmitter can be in a stand alone or multi-sensor configuration. In addition to the measurement of moisture, other analyzers are available for installation to measure and control coating thickness, resin content, oil, protein, fat, nicotine, sugar, seasonings, plastic film thickness, and other constituents, making the IR-3000 the most versatile measurement instrument in your industrial application.


Because communication with the sensor can be accomplished with Ethernet TCP/IP, plant-wide network, touch screen interface, or laptop, the IR-3000 can be installed in nearly every industrial environment. Its rugged design is impervious to ambient or other light effects, dust, temperature, and environmental humidity. The unit itself is very low maintenance and does not require recalibration.

Contact MoistTech

Our worldwide advanced technical support team would welcome the opportunity to learn about your application of perlite. We would be happy to discuss how the installation of the IR-3000 NIR online moisture transmitter would allow you to completely control perlite moisture in your refinement process. Contact MoistTech to speak with a qualified representative today.

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