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Polymer Testing


겉보기 밀도계 - Apparent Bulk Density

제조사  : 영국 Ray-Ran

가    격  : 전화문의 [02-3143-2740]

                

Bulk Density Measurement System은 파우더 및 Pellet, Coarse, Cut Fibers 등의 Apparent Density, Bulk Factor 등을 측정할 수 있는 밀도계입니다. 입자크기에 따라 ASTM D 1895에 기초한 3가지 측정 방법을 채용하고 있습니다. 

These instruments are used in the measurement of apparent density, bulk factory and the pourability of plastic materials such as molding powders etc. different instruments are required for the various forms of materials from fine powders and granules to large flakes & fibres.


Bulk density is a property of powders, granules and other “divided” solids, especially used in reference to mineral components (soil, gravel), chemical substances, (pharmaceutical) ingredients, foodstuff or any other masses of corpuscular or particulate matter. It is defined as the mass of many particles of the material divided by the total volume they occupy. The total volume includes particle volume, inter-particle void volume and internal pore volume.

Bulk density is not an intrinsic property of a material; it can change depending on how the material is handled. For example, a powder poured into a cylinder will have a particular bulk density; if the cylinder is disturbed, the powder particles will move and usually settle closer together, resulting in a higher bulk density. For this reason, the bulk density of powders is usually reported both as “freely settled” (or “poured” density) and “tapped” density (where the tapped density refers to the bulk density of the powder after a specified compaction process, usually involving vibration of the container.)

Specifications


ASTM D1895 Method A

Primarily used to measure the apparent density of fine granules that can be poured readily through a “V” shaped funnel, the material under test is allowed to flow into a cylindrical cup with a known volume of 100cm³.

Tests that can be conducted are

  • Apparent Density
  • Bulk Factor
  • Pourability


Technical Specification

  • Conforms to ASTM D1895 Method A
  • V shaped funnel
  • Measuring cup 100cm³
  • Stand with funnel shut off



ASTM D1895 Method B

The Larger of the ASTM family Method B is primarily used to measure the apparent density of larger coarse granular materials, dice or pellets that cannot be poured readily through the method A funnel. The material under test is allowed to flow into a cylindrical cup with a known volume of 400cm³.


Tests that can be conducted are

  • Apparent Density
  • Bulk Factor
  • Pourability


Technical Specification

  • Conforms to ASTM D1895 Method B
  • V shaped funnel
  • Measuring cup 400cm³
  • Stand with funnel shut off


ASTM D1895 Method C

For course flakes, strands, chips and cut fibres that cannot be poured using test methods A and B Ray-Ran offer a measuring cylinder and plunger to method C of the ASTM test standard. Since these types of materials to be tested are very bulky when loosely poured and are usually compressed to lessen the bulk, a measure of their density under a small compression load is very useful. For this test a Measuring cylinder of 1000 cm³ is supplied along with a scaled weight plunger with 1mm graduations on the outside. Lead shot is used to increase the plunger weight to 2300g to compress the material under test.

Tests that can be conducted are

  • Apparent Density


Technical Specification

  • Conforms to ASTM D1895 method C
  • Measuring funnel
  • Weight plunger
  • Lead shot (optional)


ISO Method R60

Primarily used to measure the apparent density of moulding material that can be poured readily through a specified funnel, the material under test is allowed to flow into a cylindrical cup with a known volume of 100cm³.

Tests that can be conducted are

  • Apparent Density
  • Bulk Factor
  • Pourability


Technical Specification

  • Conforms to ISO R60 specification
  • Measuring cup 100cm³
  • Stand with funnel shut off


OTHER MODELS ARE AVAILABLE ON REQUEST. PLEASE CONTACT RAY-RAN FOR MORE INFORMATION REGARDING YOUR SPECIFIC REQUIREMENT.


WEIGHTS & DIMENSIONSMethod AMethod BMethod CMethod R60
Weight (kg)4944
Width (cm)18241018
Depth (cm)23331023
Height (cm)255230 (max)25