Hall current meter loose density meter

JL-A303 Liquidity Tester（testLiquidity and loose packing density）

JL-A303liquiditytestceremony，It is used for testing metal powdersLiquidity and loose packing densityThe instrument.allcanThe free flow aperture isMetal powder in a 2.5 mm or 5mm funnel,This device can be used for all purposes.

Application fields:

forIndustrial chemistry, metal industryNew materials, new energyRelated institutions such as research institutes and quality inspection agenciesmetalPowder materialLiquidity and loose packing densitydetection.

Product parameters

instrument structure

ØFunnel: LeakageThe bucket is made of stainless steelMade of 304 material, its inner surface has been carefully and specially polished,Smooth and easy to cleanAnd has sufficient wall thickness and hardness,Durable, wear-resistant, and not easily deformed.

ØBracket, base, and connectorPink plate:The bracket is used to fix the funnel. The base is used for installing brackets and connectorsPink PlateAdjust the height of the bracket and secure it, then install the funnel onto the bracket. pick upPink PlatePlace on the base to collect powder.

Øgraduated cylinder：This deviceOptionalA volume of25ml stainless steel (304 material) measuring cylinder.The distance between the funnel outlet and the upper edge of the measuring cylinder is25mm。

ØSteel ruler and stopper: both made of stainless steel material, durable and easy to clean.

Østopwatch：The measurement time can be precise to0.01s。

Øbalance：Users need to bring their own，最大称重1Kg， The accuracy is 0.02g.

Description of the measured or calculated project

1. Determination of powder flowability

(1)Reference standard:GB/T1482-2010 Standard funnel method for determination of flowability of metal powders (Hall current meter)

(2)Testing principle: MeasurementThe time required for 50g of metal powder to flow through a standard funnel hole

(3)Calculation formula: Powder mass/Flow time

(4)Test method:Use a stopper rodBlock the small hole at the bottom of the funnel and weigh itPour 50g of the sample into a funnel,Pull out the plug, powderFlowing out from the funnel holetimeStart timing. Once the powder in the funnel has flowed out, stop timing immediately and record the time it takes for all the powder to flow out.At least measureTake the arithmetic mean three times as the final result, and measure at least three times to take the arithmetic mean as the final result,Powder mass divided by powder flow time,seekpowderflowMoving speedThe shorter the time used, the better the flowability of the powder; the longer the time used, the worse the flowability of the powder.

2. Determination of loose packing density of powder

(1)Reference standard:GB/T1479.1-2011 Determination of Loose Density Part 1: Funnel Method

(2)Test principle: Fill with known information in a loose stategraduated cylinderThe powder quality, place the funnel ingraduated cylinderAt a certain distance in the upper part, allow the powder to fall freely from the funnelgraduated cylinderTo obtain a loose state.

(3)Calculation formula: Powder mass/graduated cylindervolume（25ml）

(4)Test method:Weigh out the standard measuring cylinderqualityPlace the standard measuring cylinder on the powder trayAt the center，Funnel outlet andgraduated cylinderThe distance along the upper edge is25mm。Use a stopper rodBlock the small hole at the bottom of the funnel，Take an appropriate amount ofpowdersamplePour into the funnel，Pull out the stopper and let the powder pass throughfunnelHole free outflow falls ongraduated cylindermiddle，Until the measuring cylinder is filled with powder and overflows.Gently scrape off excess powder along the upper edge of the standard measuring cylinder with a straight steel ruler, weigh it on a balance, and obtain the weight of the powder. The loose packing density of the powder is obtained by dividing the weight of the powder by the volume of the measuring cylinder. Parallel testing under normal circumstances3Take the arithmetic mean of each sample as the final result.