ES433252A1 - Apparatus for the measurement of the specific surface of pulverised materials - Google Patents
Apparatus for the measurement of the specific surface of pulverised materialsInfo
- Publication number
- ES433252A1 ES433252A1 ES433252A ES433252A ES433252A1 ES 433252 A1 ES433252 A1 ES 433252A1 ES 433252 A ES433252 A ES 433252A ES 433252 A ES433252 A ES 433252A ES 433252 A1 ES433252 A1 ES 433252A1
- Authority
- ES
- Spain
- Prior art keywords
- output
- input
- whose
- unit
- measured sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005259 measurement Methods 0.000 title abstract 2
- 238000011156 evaluation Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Crushing And Grinding (AREA)
Abstract
Improvements introduced in a device for the measurement and evaluation of the specific surface of pulverized materials based on the principle of pneumatic resistance of the sample bed defined with temperature correction of the measured sample, characterized by the fact that said equipment consists of the circuit Corrector 1, to whose inputs potentiometer 2 is connected to adjust the relative density of the measured material, potentiometer 3 to adjust the instrumental constant, the electric thermometer 4 and the output of the time interval sensor 6 necessary for the passage of a quantity determined of air through the measured sample, and whose output is connected to the input of the pulse generator 5, in addition to the logic gate 7, one of whose inputs is connected to the output of the pulse generator 5 and the second input to the sensor output of the time interval necessary for the passage of a certain amount of air through the measured sample, and whose output is connected to unit 8 to calculate the square root of a series of input pulses, in addition to unit 9 to calculate the arithmetic mean between the new value and the value calculated during the previous determination, provided with the switch 10, whose input is connected to the unit 8 and the output to the memory input 11, the memory output 11 being connected to the digital display device 12 and to the digital-to-analog converter 13. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS895573A CS169200B1 (en) | 1973-12-22 | 1973-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES433252A1 true ES433252A1 (en) | 1976-11-16 |
Family
ID=5440820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES433252A Expired ES433252A1 (en) | 1973-12-22 | 1974-12-21 | Apparatus for the measurement of the specific surface of pulverised materials |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS50115087A (en) |
| AT (1) | AT350819B (en) |
| BE (1) | BE823709A (en) |
| CA (1) | CA1017598A (en) |
| CH (1) | CH574599A5 (en) |
| CS (1) | CS169200B1 (en) |
| DE (1) | DE2459418A1 (en) |
| DK (1) | DK643174A (en) |
| ES (1) | ES433252A1 (en) |
| FR (1) | FR2255592B1 (en) |
| GB (1) | GB1492548A (en) |
| IT (1) | IT1027960B (en) |
| YU (1) | YU334974A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3225894A1 (en) * | 1982-07-10 | 1984-01-12 | Výzkumný ústav stavebních hmot, 61700 Brno | METHOD FOR DETERMINING THE SPECIFIC SURFACE OF POWDER-SHAPED SUBSTANCES AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE8802341U1 (en) * | 1987-12-30 | 1988-04-14 | Heubach Engineering GmbH, 3394 Langelsheim | Surface measuring device |
-
1973
- 1973-12-22 CS CS895573A patent/CS169200B1/cs unknown
-
1974
- 1974-12-10 AT AT984574A patent/AT350819B/en not_active IP Right Cessation
- 1974-12-11 DK DK643174A patent/DK643174A/da unknown
- 1974-12-11 CH CH1648674A patent/CH574599A5/xx not_active IP Right Cessation
- 1974-12-16 DE DE19742459418 patent/DE2459418A1/en not_active Withdrawn
- 1974-12-16 YU YU334974A patent/YU334974A/en unknown
- 1974-12-18 JP JP14549074A patent/JPS50115087A/ja active Pending
- 1974-12-20 BE BE151813A patent/BE823709A/en unknown
- 1974-12-20 IT IT3091474A patent/IT1027960B/en active
- 1974-12-20 CA CA216,844A patent/CA1017598A/en not_active Expired
- 1974-12-21 ES ES433252A patent/ES433252A1/en not_active Expired
- 1974-12-23 GB GB5541074A patent/GB1492548A/en not_active Expired
- 1974-12-23 FR FR7442564A patent/FR2255592B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2255592A1 (en) | 1975-07-18 |
| AU7673374A (en) | 1976-06-24 |
| AT350819B (en) | 1979-06-25 |
| JPS50115087A (en) | 1975-09-09 |
| BE823709A (en) | 1975-04-16 |
| DK643174A (en) | 1975-09-08 |
| IT1027960B (en) | 1978-12-20 |
| CS169200B1 (en) | 1976-07-29 |
| ATA984574A (en) | 1978-11-15 |
| CA1017598A (en) | 1977-09-20 |
| DE2459418A1 (en) | 1975-07-03 |
| GB1492548A (en) | 1977-11-23 |
| FR2255592B1 (en) | 1978-09-29 |
| CH574599A5 (en) | 1976-04-15 |
| YU334974A (en) | 1982-02-28 |
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