What is Hall Flow velocity?

Hall Flow Meter is a device used to measure the fluidity of powder, especially for fluidity testing in powder metallurgy and granular material industries. It evaluates the flow properties of a powder by measuring the time it takes for a powder to flow from a particular device. The following is the working principle of the Hall flow meter and a table of five general technical parameters:

What is a Hall Velocimeter?  Picture 1

working principle

The operating principle of the Hall flow meter is based on the relationship between the time for a powder to flow freely from the device and its flow properties. The powder is placed in a specially shaped funnel, and the control valve at the bottom is opened to allow the powder to flow out of the funnel. Flow properties can be assessed by timing the time it takes for the powder to completely flow out of the funnel. Shorter outflow times indicate better flow properties, while longer outflow times indicate poorer flow properties.

General technical parameter table

Technical Parametersdescribe
Test MethodsThe test method used by the Hall flow meter, such as the ISO 4490 standard or other specifications.
outflow time frameThe outflow time range that the Hall flowmeter can measure, usually in seconds.
Maximum sample capacityThe maximum sample volume that a Hall flowmeter can accommodate, usually in grams (g).
repeatabilityThe test repeatability or consistency range of the results of a Hall flow meter, usually expressed as a percentage.
materialThe main construction materials of the Hall flow meter, such as stainless steel, plastic, etc.

* Specifications may vary with different Hall meter models and manufacturers. The parameters in the above table are examples only, the actual Hall meter may have other parameters or the specific values will vary.

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