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migsa - solids components manufacturer

Measuring device for automated determination of bulk density

Monitoring bulk density in the comminution process, but also in granulation and filling processes, poses major challenges for customers worldwide, especially when bulk density measurement becomes necessary on a quasi-continuous basis.

To solve this problem, HOSOKAWA solids solutions GmbH has developed and applied for a patent for an inline density meter that meets this challenge and can measure products with bulk densities from 0.05 to 5.0 kg/ dm3 with an accuracy of up to +- 0.5%.

The measurement is carried out in a dust-tight housing, so that hazardous substances can also be monitored without any problems, taking into account the requirements of employee health protection. A high measuring accuracy with simultaneously strongly reduced time expenditure is achieved by the automated measuring process and the constant process and environmental conditions.

In the meantime, inline density meters have proven their market readiness at several customers with different applications.

  • Operating principle:

The density meter essentially consists of a weighing unit and the integrated measuring cup. To determine the bulk density, the measuring cup is filled with a constant volume from the customer’s product stream. Together with the weight determined by the weighing unit, the bulk density is calculated.

  • Areas of application / customer benefits:

Since the particle size distribution correlates very well with the bulk density, there are many interesting application possibilities in the monitoring of comminution processes.

Likewise, the manufacturing process of ”foamed” products or granulation processes can be monitored and readjusted. Other potential applications include spray drying or ensuring constant filling quantities in a container, for which inline density measurement can be used to advantage.

The automated, high-precision measurement in a closed process significantly increase customer benefits compared to previous methods and leads to a reduction of labor and production costs as well as an increase in occupational safety and product quality.