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303-20 How to calibrate the funnel of hall flowmeter?

Date:2024-02-29 Traffic:722

303-20 How to calibrate the funnel of hall flowmeter?
 
Choose the emery with particle size less than 106 micron as standard sample. When tested on a standard funnel using the method specified in this standard, the standard sample shall have a fluidity of 40±0.5s/50g.
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