Dry solids flowmeters are designed to monitor the rate of bulk material flow in a process. These devices constantly measure the impact force of the material under gravity feed conditions and convert this signal into a flow rate. In process plants, dry solids flowmeters can be used in many locations to provide rate and totals for many types of bulk solids such as cereals, seeds, grains and minerals. Information from the flowmeter may be used to control the rate into a process or blending operation. A careful evaluation of the application, proper installation and calibration, and regular maintenance are essential if operators hope to enjoy continuous and reliable service. The choice and set up of an appropriate pre-feed device is critical in conditioning the material for reliable measurement. Solids flowmeters can be used in stand-alone measuring operations or they can be interfaced to a facility's process control system using industry standard protocols. They may also be connected to operate in conjunction with other equipment such as weighfeeders, belt scales, liquid additive pumps, and other process sensors. Case histories illustrate the appropriate application as well as benefits gained from using solids flowmeters.
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