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[[File:Dynamic Density Meters_1.jpg|thumb|200px|right|Dynamic Density Meters]] | |||
'''Dynamic Density Meters''' is the process industry's only in-line, real-time density meter providing an output representing the dynamic density of the dry solids material flowing through it. | |||
This | The real-time output representing dynamic bulk density can be used in a feed-forward or feed-back mode to monitor or control a single flow stream's density or maintain a specified density of a material as the control variable of a blend of "light/heavy" materials. | ||
==Processes== | |||
The Density Meter system consists of (1) a Bulk Solids Pump Volumetric Feeder and material hopper on load cells that is in-line in the process. Above the feeder is an automated gate valve (2) that receives material from the process. | |||
In normal operation material flows through the gate valve and feeder into the process. To calculate density the controls close the gate valve on a demand or timed basis. As the level in the feed hopper lowers, a weight reading is triggered at a defined level. Upon taking a successful weight reading the gate valve opens. This entire process is completed in seconds and in-line without any interruption of material output. A measurement can be taken as frequently as every 5-10 seconds. | |||
Density is calculated by dividing material weight by the volume of the material. | |||
Density (lbs/ft3) = Weight (lbs)/Volume (ft3) | |||
As indicated, the Dynamic Density Meter weighs the complete stream of material (no sampling) in its natural flow or dynamic state of flow. The real-time output signal equals the dynamic bulk density of the material in motion. | |||
==Video== | |||
<youtube>v-6AgH0rYkk</youtube> | |||