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Summary of Contents for KERN ACS-A03
- Page 1 KERN & Sohn GmbH Ziegelei 1 Phone: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com Operating instructions Set for Density determination for Analytical Balances KERN ACJ / ACS KERN ACS-A03 Version 1.0 04/2012 ACS-A03-BA-e-1210...
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Page 2: Table Of Contents
KERN ACS-A03 Version 1.0 04/2012 Operating instructions Density Determination Set for Analytical Balances KERN ACJ / ACS Contents: 1 INTRODUCTION ..........................3 ........................3 COPE OF DELIVERY 2 PRINCIPLE OF DENSITY DETERMINATION ................... 5 ............... 6 NFLUENCING MAGNITUDES AND ERROR SOURCES 3 INSTALLING THE DENSITY DETERMINATION SET ............... -
Page 3: Introduction
(1) -2 Immersion basket for floating solid matter (density < 1 g/cm³) Weighing tray holder Glass container ∅ 90 mm, h = 60 mm Platform for glass container Thermometer (5) -1 Rubber stop for thermometer Holder for thermometer Glass sinker Operating instructions ACS-A03-BA-e-1210... - Page 4 Fig. 2: Installed density set KERN ACS-A03 Fig. 3: Immersion basket for solid matter A Upper sample dish (weight of the sample in air) B Lower sample dish (weight of the sample in measuring liquid) ACS-A03-BA-e-1210...
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Page 5: Principle Of Density Determination
1 kg, has the volume of 1 m³. Additional frequently applied units include: The application of this density determination set in combination with the KERN ABS/ABJ balances provides fast and safe determination of solids and fluids. Our set uses the "Principle of Archimedes"... -
Page 6: Influencing Magnitudes And Error Sources
Influencing magnitudes and error sources Air pressure Temperature Volume deviation of the sinker Surface tension of the liquid Air bubbles Immersion depth of the sample dish of sinker Porosity of the solid ACS-A03-BA-e-1210... -
Page 7: Installing The Density Determination Set
3. Insert balance tray holder carefully 4. Place the platform for glass containers in a way that it does not touch the balance tray holder. 5. Mount the immersion basket; ensure that it hangs centrically in the recess of the weighing tray holder. ACS-A03-BA-e-1210... - Page 8 9. Take away the immersion basket and put the glass container in the center of the platform. 10. Remount the immersion basket. Make sure that it does not touch the glass container. 11. Heat the liquid, the instruments or the sinker until the temperature is constant. Observe the warm-up time of the balance. ACS-A03-BA-e-1210...
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Page 9: Density Determination Of Solids
Display Auxiliary fluid Destilled water Ethyl alcohol Methyl alcohol To use a different auxiliary fluid of your choice, select "OTHER". To confirm, press TARE, "SET" followed by the display used to enter "temperature auxiliary fluid" will appear. ACS-A03-BA-e-1210... - Page 10 8. The weighing balance will display the auxiliary fluid’s density at the entered temperature for about 3 sec and will then change to "density determination solid matter" mode. To change from density mode to weighing mode press MENU for 3 s. ACS-A03-BA-e-1210...
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Page 11: Calculate Density
7. If you connect an optional printer you can print the result. 8. Remove the sample. To carry out further measuring, press UNIT, and then start with step 2. Printout example KERN YKB-01N: KERN & Sohn GmbH Company TYPE ACS 320-4 Model SN WB11AG0002 Serial no. -
Page 12: Density Determination Of Solid Material With A Density Of Less Than 1 G / Cm 3
Density measurement see chapter 4.2, in step 5 place the sample under the sifting bowl. If the buoyancy of the sample is so much that the immersion basket is lifted, place a dummy weight on it and tare it away when weighing in air. ACS-A03-BA-e-1210... -
Page 13: Determining Density Of Liquids
Temperature Density Temperature Density Temperature Density ρ [℃] [g/cm [℃] [g/cm [℃] [g/cm 0.9997 0.9984 0.9963 0.9996 0.9982 0.9960 0.9995 0.9980 0.9957 0.9994 0.9978 0.9954 0.9993 0.9976 0.9951 0.9991 0.9973 0.9947 0.9990 0.9971 0.9944 0.9988 0.9968 0.9941 0.9986 0.9965 ACS-A03-BA-e-1210... -
Page 14: Call Up "Density Determination Fluid
Digit selection to the right Confirm entry 7. The weighing balance will show “SET“ for about 3 sec. after which it will change to "density determination fluid" mode. To change from density mode to weighing mode press MENU for 3 s. ACS-A03-BA-e-1210... -
Page 15: Calculate Density
UNIT. 4. The weighing balance will first determine then display the fluid’s density. 5. If you connect an optional printer you can print the result. Printout example KERN YKB-01N: KERN & Sohn GmbH Company TYPE ACS 320-4 Model SN WB11AG0002 Serial no. -
Page 16: Data-Hold Function
To carry out density determination, see chap.4.2 /step 6 or chap.5.3 /step 4. “WAIT“, will be flashing for about 5 sec whilst weighing balance is determining density. [∗] indicates the recorded density. To delete the retained display value, press the UNIT key. The balance returns to density determination mode. ACS-A03-BA-e-1210... -
Page 17: Preconditions For Precise Measurements
As a result, part of the suspension bracket of the sample dish will also be immersed causing buoyancy to increase. As a consequence the weight of the specimen in the fluid will drop. Samples that change the volume or assimilate fluid are unsuitable for measurement. ACS-A03-BA-e-1210... -
Page 18: Liquids
When changing the ambient temperature or location, an adjustment of the balance is necessary. For this purpose, remove the density set and carry out adjustment using the standard weighing pan. ACS-A03-BA-e-1210... -
Page 19: Density Table For Fluids
0.9976 0.7867 0.7880 0.9973 0.7859 0.7870 0.9971 0.7851 0.7870 0.9968 0.7842 0.7861 0.9965 0.7833 0.7852 0.9963 0.7824 0.7842 0.9960 0.7816 0.7833 0.9957 0.7808 0.7824 0.9954 0.7800 0.7814 0.9951 0.7791 0.7805 0.9947 0.7783 0.7896 0.9944 0.7774 0.7886 0.9941 0.7766 0.7877 ACS-A03-BA-e-1210... -
Page 20: Measurement Uncertainty During Density Determination Of Solid Matter20
0.001 0.001 0.001 0.001 Reading example for table: In a balance with a resolution of 0.0001 g and a sample with a weight of 5 g, whose density is 3 g/cm , the display graduation is at 0.0004 g/cm ACS-A03-BA-e-1210... -
Page 21: User Instructions
In addition you must observe the applicable safety regulations when working with ethanol. Handle glass sinker with care (no warranty claims in case of damage). • • To avoid corrosion, don't leave the density set immersed in liquid for a long time. ACS-A03-BA-e-1210...
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