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Sartorius YDK 01, Руководство пользователя

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Contents

Page

Kit Components

2

Getting Started

8

Methods for Determining Specific Gravity/Density 13

Sources of Error and Possibilities for Correction

14

Determining the Specific Gravity/Density

17

– of Solids

17

– of Solids with a Density <1 g/cm

3

18

– of Liquids

21

Application in Legal Metrology

22

Tables

23

Density Values of H

2

O

23

Density Values of Ethanol

24

Supplement

25

6

Содержание YDK 01

Страница 1: ...98647 002 37 Sartorius YDK 01 YDK 01 0D YDK 01LP Density Determination Kit User s Manual...

Страница 2: ...2 YDK 01 YDK 01 0D 9 8 7 2 1 3 4 5 6...

Страница 3: ...om tre avec clip de fixation 4 Glass plummet Glassenkk rper Plongeur calibr en verre 5 Sieve for immersing samples pan hanger assembly Tauchsieb Panier pour chantillons flottants ensemble suspendre 6...

Страница 4: ...4 9 10 8 7 2 1 3 4 5 6 YDK 01LP...

Страница 5: ...ons flottants ensemble suspendre 6 Sample holder pan hanger assembly Tauchkorb Panier pour chantillons ensemble suspendre 7 Metal platform Br cke Pont m tallique 8 Adapter for LA LP models with an ana...

Страница 6: ...ty Density 13 Sources of Error and Possibilities for Correction 14 Determining the Specific Gravity Density 17 of Solids 17 of Solids with a Density 1g cm3 18 of Liquids 21 Application in Legal Metrol...

Страница 7: ...determination kit and working with it If your balance is equipped with a density determination program you can have the rho values calculated by the program In this case please follow the operating in...

Страница 8: ...and up Micro series RC balances Research series Preparing the Bar Frame You must mount the adapter before the bar frame can be placed on the balance Please use the adapter that is appropriate for the...

Страница 9: ...ening at the top of the frame must face the direction from which the sample holder sieve glass plummet will be placed into the frame Always use the metal platform to hold a beaker Please position this...

Страница 10: ...embly glass plummet will be placed on the balance LA3200D LP3200D Balances Place the components on the balance in the following order Short adapter Compensating disk Bar frame k The wedge shaped openi...

Страница 11: ...er pan hanger assembly glass plummet will be placed on the balance Beaker Immersion Device Use the metal plate to support the beaker Place it on the bar frame base and then set both on the balance The...

Страница 12: ...an that of the liquid in which the sample is immersed use 76 mm beaker and sieve for immersing the sample To determine the density of liquids 55 mm beaker and glass plummet Thermometer If necessary at...

Страница 13: ...volume of the solid With a hydrostatic balance which enables you to weigh a solid in air as well as in water it is possible to determine the specific gravity of a solid if the density of the liquid c...

Страница 14: ...d on the suspension wire of the pan hanger assembly Air bubbles on the sample Some of these errors can be corrected by calculation To do so it is necessary to proceed as follows measure the temperatur...

Страница 15: ...rected The following formula allows for air buoyancy W a fl a a W a W fl Where a 0 0012 g cm3 Density of air under standard conditions temperature 20 C pressure 101 325 kPa Depth of Immersion The pan...

Страница 16: ...ing procedure the effect of the meniscus can be disregarded To reduce the surface tension and the friction of liquid on the wire add three drops of a tenside Mirasol Antistatic or an ordinary dishwash...

Страница 17: ...be immersed and hang it from the frame Measuring Procedure Determining the Weight of a Sample in Air Tare the balance Place the sample on the upper pan on the frame and weigh Record the weight W a De...

Страница 18: ...ic gravity of solids with a density less than1g cm Method 1 For this method distilled water is still used as the liquid causing buoyancy but the pan hanger assembly is replaced by the sieve for immers...

Страница 19: ...s only slightly from that of distilled water Since the sample is suspended in water measuring errors may occur if the first method is used It also makes sense to use the second method when determining...

Страница 20: ...displayed with a negative sign Calculating the Specific Gravity Read off the temperature of the liquid Using the table at the back of this manual find the density fl which corresponds to the temperatu...

Страница 21: ...he Buoyancy G W a W fl The negative weight displayed by the balance corresponds to the buoyancy acting on the glass plummet in the liquid Record the buoyancy displayed with a negative sign Read off th...

Страница 22: ...of liquids In addition to the bar frame adapter and metal plate the following components provided with the YDK 01 0D will be needed Beaker 55 mm Glass plummet Material AR glass Volume 10 cm3 suspende...

Страница 23: ...9 0 99847 0 99845 19 0 99843 0 99841 0 99839 0 99837 0 99835 0 99833 0 99831 0 99829 0 99827 0 99825 20 0 99823 0 99821 0 99819 0 99817 0 99815 0 99813 0 99811 0 99808 0 99806 0 99804 21 0 99802 0 998...

Страница 24: ...0 79037 0 79028 19 0 79020 0 79011 0 79002 0 78994 0 78985 0 78977 0 78968 0 78960 0 78951 0 78943 20 0 78934 0 78926 0 78917 0 78909 0 78900 0 78892 0 78883 0 78874 0 78866 0 78857 21 0 78849 0 7884...

Страница 25: ...y the volume of the solid The volume of an immersed solid V s equals the volume of the displaced liquid V fl The following are determined 1 The weight of the sample in air W a 2 The buoyancy of the so...

Страница 26: ...re a 0 0012 g cm3 density of air under standard conditions temperature 20 C pressure 101 325 kPa which results in the following W a fl a a W a W fl the immersion of the wires of the sample holder or s...

Страница 27: ...ed by the immersed wires from the buoyancy determined for the sample G W a W fl The corrected buoyancy A corr to use in this calculation is then G A d2 A corr W a W fl 2 W a W fl D2 d2 A corr 1 2 W a...

Страница 28: ...r by any means without the prior written permission of Sartorius AG The status of the information specifications and illustrations in this manual is indicated by the date given below Sartorius AG rese...

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