Laser is measuring size frequency by projection area, this can only approximately be converted into frequency by mass/weight, which is the only desirable dependent variable. There are various laser analyzers - some are scanning the sedimenting particles and record also the settling time. Do you have one? Which type?
Ne elementarnyj sostav. I cannot write Russian but read only (I have no azbuka keyboard). The Analyzer's program can convert settling velocity distributions into grain size (particle shape can be specified) distributions. But I do NOT recommend it for sedimentological purposes (interpretations). You will find more on other my pages, such as:
Granulometry refers not only to grain size distribution - it means "dispersity analysis", "dispersity properties". And "dispersity" may be described by any suitable dispersity unit:
The independent distribution variable (x)corresponds to the dispersity unit (Dispersitätsgrösse in German language) defined by Hans RUMPF (1975, page 8):
»Dispersity Unit is a physical quantity specified by a numerical value and unit dimension; this quantity can describe a particle collective by a distribution function.«
For sedimentological interpretations, I prefer sedimentation (settling) velocity (rate). But the Analyzer's® software SedVar® can convert settling rate which is measured into any variable (both number and distribution), such as grain size (you may specify it by SF (Shape Factor), into Reynold's number, etc. - http://www.granometry.com/index.php/variables.html .
The measuring intervals (fractions") are logarithmically equidistant, their with is 0.02 PSI (=coefficient 21/50), which means there are 50 intervals per 1 PSI (double/half of the settling velocity in cm/sec).
The finest measurable sand is analyzed (with sample introduction) within 20 minutes; medium sand may take 5 minutes, and coarse sand 1-2 minutes.
Pelites can not be analyzed - for quartz density, the fine limit is about 0.05 mm .
The Analyzer® is the most precise istrument worldwide.
It requires minimum sample size - typically 0.1 gram of fine sand, typically 1-5 gram of medium sand. The samples must be reduced to the appropriate size by a rotational sample splitter (divider).
Laser is measuring size frequency by projection area
Dear Vladimir,
Laser is measuring size frequency by projection area, this can only approximately be converted into frequency by mass/weight, which is the only desirable dependent variable. There are various laser analyzers - some are scanning the sedimenting particles and record also the settling time. Do you have one? Which type?
Thank you for the first question.
Jiri
Интересно! А что анализирует
Интересно! А что анализирует Ваш анализатор? Элементарный состав, размерность частиц и ещё чего?
Dispersity of sand - Analyzer
Ne elementarnyj sostav. I cannot write Russian but read only (I have no azbuka keyboard). The Analyzer's program can convert settling velocity distributions into grain size (particle shape can be specified) distributions. But I do NOT recommend it for sedimentological purposes (interpretations). You will find more on other my pages, such as:
http://www.granometry.com/index.php/products.html
http://www.granometry.com/index.php/products/analyzer.html
http://www.granometry.com/index.php/products/separator.html
http://www.granometry.com/index.php/princip.html
http://www.granometry.com/index.php/variables.html etc..
Simply click on the items in the green (left) navigation stripe
Да, хотелось бы поподробнее -
Да, хотелось бы поподробнее - какие анализы делаете, сроки, цены?
More details, time, price
Hi Elena,
Please read the articles they appear after clicking onto the items in the left (green) navigation stripe.
Time:
The finest measurable sand is analyzed (with sample introduction) within 20 minutes; medium sand may take 5 minutes, and coarse sand 1-2 minutes.
Prices are in EUROs, but you may convert them into any currency here: http://www.granometry.com/index.php/prices.html
You may email me to jb@grano.de
Jiri
делает гранулометрический
делает гранулометрический анализ
но не ситовым спосбом очень быстро и выделяет большое количество фракций
применим от среднезернистых песков до пелитов
а да применим для несцементированных пород
Granulometry is not only grain size distribution
Granulometry refers not only to grain size distribution - it means "dispersity analysis", "dispersity properties". And "dispersity" may be described by any suitable dispersity unit:
The independent distribution variable (x) corresponds to the dispersity unit (Dispersitätsgrösse in German language) defined by Hans RUMPF (1975, page 8):
»Dispersity Unit is a physical quantity specified by a numerical value and unit dimension;
this quantity can describe a particle collective by a distribution function.«
For sedimentological interpretations, I prefer sedimentation (settling) velocity (rate). But the Analyzer's® software SedVar® can convert settling rate which is measured into any variable (both number and distribution), such as grain size (you may specify it by SF (Shape Factor), into Reynold's number, etc. - http://www.granometry.com/index.php/variables.html .
The measuring intervals (fractions") are logarithmically equidistant, their with is 0.02 PSI (=coefficient 21/50), which means there are 50 intervals per 1 PSI (double/half of the settling velocity in cm/sec).
The finest measurable sand is analyzed (with sample introduction) within 20 minutes; medium sand may take 5 minutes, and coarse sand 1-2 minutes.
Pelites can not be analyzed - for quartz density, the fine limit is about 0.05 mm .
The Analyzer® is the most precise istrument worldwide.
It requires minimum sample size - typically 0.1 gram of fine sand, typically 1-5 gram of medium sand. The samples must be reduced to the appropriate size by a rotational sample splitter (divider).
Thank you for your questions.
Jiri