ETI Model DGA-410 Ashmeter from HMA INSTRUMENTATION is a registered nuclear gauging device for measuring the ash-weight percent of coal. The measuring portion of the device, which consists of a source and detector assembly, is normally mounted across a conveyor belt on the existing belt structure. The detector is connected to an electronics enclosure housing an industrial computer that processes the detector signals, and displays the measured results to the operator. The ETI Model DGA-410 Ashmeter from HMA INSTRUMENTATION generates ash weight percent and weight/density measurements every three seconds, making it highly useful in on-line process and control applications. It can easily control the ETI Model HSG1 High-Speed Sort Gate for separating process coal into different quality piles.

A virtually unlimited flow capacity makes the ETI Model DGA-410 Ashmeter from HMA INSTRUMENTATION a valuable sorting instrument. Run of mine coal, especially within seams of highly variable composition, can be sorted efficiently into specific market products, thereby reducing good product waste and improving profit margins. Use of the ETI Model DGA-410 Ashmeter from HMA INSTRUMENTATION as the control element in either feed-forward or feed-back control makes it a valuable tool for coal blending.

Electronic control signals can be used to adjust feed rates from various coal sources, thereby improving blend quality and efficiency. Applying it to the output of a prep plant allows for closed-loop feedback to control heavy-media density in the coal circuit. On a plant bunker feed belt, the ETI Model DGA-410 Ashmeter from HMA INSTRUMENTATION allows for boiler operation adjustments to reduce boiler fouling and slagging, which can improve the long-term heat rate.