Operating instructions Density Scale
Contents
1. N KERN amp Sohn GmbH V A WAAGEN GEWICHTE BALANCES WEIGHTS 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 Density Scale KERN EMB V Version 2 0 01 2013 GB EMB V BA e 1320 KERN EMB V Version 2 0 01 2013 Operating instructions Density Scale Contents 1 Tecnnical Qalan aa aaa aaa aaa aenak aaa aaa aaa aa aaa aba a ad aaa aaa aaa eae eee 4 2 ADDIIANCE OV TVICW aaa a oni a aa aa nn En a a E a Ee D E A Ga 5 2 1 KERN EMB 200 3V with installed density kit KERN YDB O 02 0 6 2 2 KERN EMB 2000 2V with installed density kit KERN YDB O2 eenene 7 2 3 Keyboard OvVerViEW ae ae 8 2 3 1 NUMEN EN een 8 3 Basic Information General 9 3 1 PODE USE een en aaa Me 9 3 2 IMDEOBER Usenet een t ite 9 3 3 NGANAN sag aaa an a Sa apa a nenn AAN Ka a a Na denen 9 3 4 Monitoring of Test Resources ka 10 4 BaSiC Safety Precaulions misina aaa aa a aa Na a a E 10 4 1 Pay attention to the instructions in the Operation Manual ccccseeeeeeeeeeeeeeeeeees 10 4 2 Personnel alnih aeie a 10 5 Transport and SLOL AGC sana a a aa aa aa 10 5 1 Testing upon ACCEPTANCE cccccceccceeeceeeceecceecceeeceeecseccseecaeeceeseeeseeeseeeseeeseesseessaeees 10 5 2 Packaging return transport sun ana 10 6 Unpacking Setup and COMMISSIONING cceeeeeeeeeee2. 1210 3 Density determination solids 11 Lay the solid in the upper sample dish 12 Press and the weight of the sample in air is shown example 13 Lay the sample into the lower sample dish and immerse it in the aid liquid Make sure that the sample is at least 1 cm immersed and has if possible no air bubbles adhering to it 14 Press WW and for a short time the weight of the sample in the aid liquid is displayed example The scale determines the density of the solid and subsequently displays the result example When connecting an optional printer press to print the result Printout example KERN YKB 01N D REF 0 9976 g cm 3 Density aid liquid D RSL 8 0409 g cm 3 Result density of the sample W AIR 020 000 g Weight of the sample in air W LDQ 017 432 g Weight of the sample in liquid Press pal balance will return to weighing mode For further measurements start at step 2 EMB V BA e 1210 23 8 2 2 Density determination using the suspended weighing device Density determination with help of the suspended weighing device is recommended for samples that do not fit due to size or shape in the sample dish or glass beaker of the optional density kits In this method the solid is first weighed in air Afterwards the solid is immersed in the aid liquid at the right temperature so that it doesn t touch the bottom of the glass beaker but is still completely submerged Now itis weighed ag
3. Weighing plate density kit Beaker Lower sample dish of the immersion basket Platform EMB V BA e 1210 2 2 KERN EMB 2000 2V with installed density kit KERN YDB 02 Upper sample dish of the immersion basket Beaker Lower sample dish of the immersion basket Platform oo 8 Weighing plate density kit EMB V BA e 1210 7 2 3 Keyboard overview Turn on off Calculate weighing data via interface Menu access longer pressing of the button Cancel process input Density determination mode to switch over to weighing mode Numeric input dialing digits to the right e Taring Setting to zero Confirm Save and exit menu Adjustment menu access longer pressing of the button Density determination access mode for solids Scroll backwards in menu Density determination access mode for liquids scroll forward in menu Weighing in air Weighing in liquid 2 3 1 Numeric entry Dialing the digits to the right each active site flashes gt AN Each time you press the button the numerical value of the flashing digit increases Confirm entry 8 EMB V BA e 1210 3 Basic Information General 3 1 Proper use The scale purchased by you is intended to determine the density of solids and liquids The determination of the density is based on the Archimedean Principle see chapter 8 1 Furthermore the scale can also be used to determine the weighing value of the weighing object It is inten
4. based on the Archimedean Principle which states that every object that is dipped into a liquid is as much lighter as the liquid that it displaces Thus density is calculated according to the formulae below gt Density determination of solids Our balances enable weighing of solids in air A as well as water B If the density of the buoyancy medium is known po the density of the solid p is calculated as follows p density of sample A weight of the sample in air B weight of the sample in the aid liquid po density of the aid liquid EMB V BA e 1210 17 gt Determining density of liquids The density of a fluid is determined with the help of a sinker providing a known volume V The sinker is weighed in air A as well as in the test fluid B According to the Archimedes Principle a body immersed in a fluid experiences a force of buoyancy G This force equals the weight force of the fluid displaced by the volume of the body The volume V of the immersed body equals the volume of the displaced fluid P G buoyancy of sinker Buoyancy of sinker Weight of the sinker in air A weight sinker in test liquid B From this follows density of test liquid weight of sinker in air weight of the sinkers in test liquid volume of sinker lt UWP 8 1 1 Influencing magnitudes and error sources gt Air pressure gt Temperature gt Volume deviation
5. e The appliance is improperly set up or incorrectly electrically connected e The measuring system is overloaded EMB V BA e 1210 9 3 4 Monitoring of Test Resources In the framework of quality assurance the measuring related properties of the balance and if applicable the testing weight must be checked regularly The responsible user must define a suitable interval as well as type and scope of this test Information is available on KERN s home page www kern sohn com with regard to the monitoring of balance test substances and the test weights required for this In KERN s accredited DKD calibration laboratory test weights and balances may be calibrated return to the national standard fast and at moderate cost 4 Basic Safety Precautions 4 1 Pay attention to the instructions in the Operation Manual Carefully read this operation manual before setup and commissioning even if you are already familiar with KERN balances 4 2 Personnel training The appliance may only be operated and maintained by trained personnel 5 Transport and storage 5 1 Testing upon acceptance When receiving the appliance please check packaging immediately and the appliance itself when unpacking for possible visible damage 5 2 Packaging return transport gt Keep all parts of the original packaging for a possibly required return Only use original packaging for returning Prior to dispatch disconnect all cables and remove loose mobile par
6. is shown example If possible immersed the sample bubble free in the aid liquid Make sure that the sample is at least 1 cm immersed and doesn t touch the glass beaker gt Press WW and for a short time the weight of the sample in the aid liquid is displayed example The scale determines the density of the solid Wait until the result is displayed example When connecting an optional printer press to print the result see printout example chapter 8 2 1 Using e the balance returns into the weighing mode 26 EMB V BA e 1210 8 2 3 Density determination of solid material with a density of less than 1 g cm At solid material with density less than 1 g cm a density determination with two different methods is possible Method 1 As aid liquid is used a liquid with less density than that of the solid material e g ethanol approx 0 8 g cm This method should be applied when the density of the solid is just slightly different from that of the distilled water Using ethanol is not recommended when the solid material is being attacked AN When working with ethanol you must observe the applicable safety regulations Method 2 Here the sample is not placed upon but under the sample dish Here the immersion basket for floating solids is to be used KD Fig Density kit KERN YDB 01 with installed immersion basket for floating solid matter EMB V BA e 1210 27 Abb Density kit KERN YD
7. mode N 4 EMB V BA e 1210 14 Data output RS 232 C Data output is carried out via interface RS 232 C The following conditions must be met to provide successful communication between the weighing balance and the printer e Use a suitable cable to connect the weighing balance to the interface of the printer PC Faultless operation requires an adequate KERN interface cable optional e Communication parameters e g baud rate of the scale and printer must match 1 Technical data e 8 bit ASCII Code e 1 start bit 8 data bits 1 stop bit no parity bit e Baud rate selectable at 1200 2400 4800 9600 and 19200 Baud e Miniature plug in necessary 9 pole D Sub 2 Pin allocation of balance output bushing Front view 1 2 3 4 5 g f f in 2 ransmit data 00000 Ping Receive data O 000 Pin 5 Signal ground 6 7 8 9 EMB V BA e 1210 45 3 Explanation of the data transfer rE Cr gt PRINT key Press the PRINT key at stable weight is transferred gt Remote control commands The remote control commands s w t are sent from the remote control unit to the balance as ASCII code After the balance having received the s w t commands it will send the following data Take into account that the following remote control commands must be sent without a subsequent CR LF S Function Stable weighing value for the weight is sent via the RS232 interface W Function Weighing value for the weight stable or unstable is sent via t
8. o r Carriage Return Line Feed 15 Service maintenance disposal Before any maintenance cleaning and repair work disconnect the appliance from the operating voltage 15 1 Clean Please do not use aggressive cleaning agents solvents or similar agents but a cloth dampened with mild soap suds Take care that the device is not penetrated by fluids and polish it with a dry soft cloth Loose residue sample powder can be removed carefully with a brush or manual vacuum cleaner Spilled weighing goods must be removed immediately 15 2 Service maintenance gt The appliance may only be opened by trained service technicians who are authorized by KERN gt Ensure that the balance is regularly calibrated see chap Testing instruments control 15 3 Disposal gt Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance EMB V BA e 1210 47 16 Instant help In case of an error in the program process briefly turn off the balance and disconnect from power supply The weighing process must then be restarted from the beginning Help Fault Possible cause The displayed weight does not glow e The balance is not switched on e The mains supply connection has been interrupted mains cable not plugged in faulty e Power supply interrupted e Battery is inserted incorrectly or is empty e No batteries inserted The dis
9. relevant However since you work with an aid liquid by the density determination of solids according to the Archimedean Principle its temperature is taken into account The temperature change effects liquids greater and causes changes in the density in order of 0 1 to 1 per C Hereby the third digit after the decimal point is affected 9 2 4 Surface The suspension bracket of the sample dish penetrates the surface of the fluid This state undergoes continuous change If the sample or the sinker is relatively small the surface tension will impair repeatability The addition of a small amount of detergent makes the surface tension negligible and increases repeatability 9 2 5 Sinker for density determination of liquids To save test fluids by the density determination of liquids a small glass beaker and an appropriate sinker is to be used Hereto it should be noted that a larger sinker achieves greater accuracy Determine the buoyancy and volume of the sinker as accurately as possible For the determination of fluid density these results are applied to the common denominator as well as the numerator of the formula 9 3 General information 9 3 1 Density Relative Density Relative density follows from the weight of a specimen divided by the weight of water at 4 Celsius of the same volume For this reason relative density does not have a unit Density equals mass divided by volume The application of the relative densit
10. them describes will be described later While using the same sinker the entered density stays stored Skip the following steps for additional measurements and start by determining the density of the liquid step 7 EMB V BA e 1210 29 t Enter the density of the sinker 4 Press A and the last digit flashes T 5 Use to increase the numeric value of the flashing cipher Use E to move the number selection to the right the respective active position flashes 6 Confirm input by ws Density determination liquids 7 Place sinker in the upper sample dish 2 8 Press s and the weight of the sinker in air is displayed example 9 Lay the sinker in the lower sample dish and immerse it into the test liquid Make sure that the sinker is at least 1 cm submerged and that if possible no air bubbles adhere to it 10 Press W and for a short time the weight of the sinker in the test liquid is displayed example The scale determines the density of the liquid and then displays the result example 30 EMB V BA e 1210 When connecting an optional printer pressing of will print the result Printout example KERN YKB 01N D REF 8 0409 g cm 3 Sinker density D RSL 0 9984 g cm 3 Result Density of the test liquid W AIR 020 000 g Weight of sinker in air W LDQ 017 432 g Weight of the sinker in liquid Press pal balance will return to weighing mode For further measurements start at step 2
11. 8 3 2 Density determination using the suspended weighing device How to prepare the weighing balance gt Turn off the scale and turn it around gt Open closing cover at the balance bottom gt Mount the hooks for underfloor weighing gt Place weighing balance over an opening gt Attach the suspension device gt Pour the test liquid into a glass beaker gt Control the temperature of the liquid instruments and the displacement body until the temperature is constant Observe the warm up time of the balance EMB V BA e 1210 31 t Mode to call up density determination of liquids ON 1 Turn on the scale with 3 0 000 is displayed TARE 2 Ifthe scale does not display 0 000 press 3 Call up the density determination mode of liquids by pressing 0 Ge Liquid is displayed briefly followed by the actual entered density of the sinker Initial entry or if it is necessary to change them describes will be described later While using the same sinker the entered density stays stored Skip the following steps for additional measurements and start by determining the density of the liquid step 7 tS Enter the density of the sinker 4 Press a and the last digit flashes T 5 Use to increase the numeric value of the flashing cipher Use e to move the number selection to the right the respective active position flashes 32 EMB V BA e 1210 6 Confirm input by ws tS Density determination liquid
12. B 02 with installed immersion basket for floating solid matter Activate function see chap 8 2 1 Input parameter for aid liquid see chapter 8 2 1 Density determinations see chapter 8 2 1 in step 9 enter the sample under the lower sample dish 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 28 EMB V BA e 1210 8 3 Determining density of liquids At the density determination of liquids a sinker is used whose density is known The sinker is weighed first in air and then in the liquid whose density is to be determined From the weight difference results the buoyancy from where the software calculates the density The density of the enclosed steel sinker can be determined as described in chapter 8 2 1 Or quickly and inexpensively in our calibration laboratory For further information please go to KERN Hompage www kern sohn com 8 3 1 Density determination while using the density kits KERN YDB 01 or YDB 02 Install the density kit see chapter 8 2 1 i Mode to call up density determination of liquids ON 1 Turn on the scale with 5 0 000 is displayed i 5 J m 2 Ifthe scale does not display 0 000 press 3 Call up the density determination mode of liquids by pressing 0 ace Liquid is displayed briefly followed by the actual entered density of the sinker Initial entry or if it is necessary to change
13. Place the platform for glass containers in a way that it does not touch the weighing plate gt Place beaker in the centre of the platform Make sure that it has no contact with the frame gt Hang the immersion basket on the rack Make sure that it is centred in the recess gt Pour the liquid into the glass beaker Filling height should be approx of the capacity Immerse thermometer gt Heat the liquid the instruments or the displacement body until the temperature is constant Observe the warm up time of the balance For more information please refer to the operating manual supplied with the density kit EMB V BA e 1210 21 Procedure Access mode for the density determination of solids o 5 Turn on the scale with LF 0 000 is displayed lt 6 Ifthe scale does not display 0 000 press 7 Access by pressing density determination mode for solids a example water at 19 C SOLId is briefly displayed followed by the actual entered density of the aid liquid If necessary change as described later 3 Enter the density of the aid liquid while taking into account the current temperature See density table chapter 10 8 Press G and the last digit flashes YL T 9 Use to increase the numeric value of the flashing cipher Use p3 to move the number selection to the right the respective active position flashes 10 Confirm input by ws example water at 23 C 22 EMB V BA e
14. ain From the two weight values the scale determines the density of the solid and displays it How to prepare the weighing balance Turn off the scale and turn it around Open closing cover at the balance bottom Mount the hooks for underfloor weighing Place weighing balance over an opening Attach the suspension device Fill the aid liquid into a glass beaker 4 4U Q Y 44 Q Q Heat the liquid the instruments or the sinker until the temperature is constant Observe the warm up time of the balance 24 EMB V BA e 1210 Calculate density 3 Access mode for the density determination of solids ON gt Start balance by pressing lf the scale does not display zero tare with gt Access by pressing density determination mode for solids 4 TARE example water at 19 C SOLId is briefly displayed followed by the actual entered density of the aid liquid 3 Enter the density of the aid liquid while taking into account the current temperature See density table chapter 10 gt Press and the last digit flashes NILA AJA T gt Use to increase the numeric value of the flashing cipher Use f3 to move the number selection to the right the respective active position flashes gt Confirm input by example water at 23 C EMB V BA e 1210 25 Density determination solids gt gt Hang the sample on the suspension device 5 Press and the weight of the sample in air
15. ait for stability display g gt Read weighing result lf the weighing object is heavier than the weighing range the display shows the error message E EMB V BA e 1210 15 Taring TARE Delete tare 16 TARE gt Place an empty weighing container the weight of the weighing container will be displayed gt Press the TARE button the zero display disappears The tare weight is saved until it is deleted gt Weigh the material the net weight will be indicated The taring process can be repeated any number of times e g when adding several components for a mixture adding The limit is reached when the whole weighing range is exhausted After removing the weighing container the weight of the weighing container appears as negative display The tare weight is saved until it is deleted gt Unload the balance and press the TARE button the zero display appears EMB V BA e 1210 8 Density determination 8 1 Principle of Density Determination Three physical magnitudes are the volume and the mass of bodies as well as the density of matter In density mass and volume are related Density p is the relation of mass m to volume V p SI unit of density is kilogram divided by cubic meter kg m3 1 kg m equals the density of a homogenous body that for a mass of 1 kg has the volume of 1 m8 Additional frequently applied units include kg g oo ao The determination of the density is
16. alance inside or from outside If electro magnetic fields or static charge occur or if the power supply is unstable major deviations on the display incorrect weighing results are possible In that case the location must be changed 6 2 Unpacking Scope of delivery Remove balance and accessories carefully from packaging remove packaging material and place device at the planned work place Verify that there has been no damage and that all packing items are present scope of delivery serial accessories Balance see chap 2 0 Mains adapter Flush mounted hook Operating instructions EMB V BA e 1210 11 6 3 Mains connection Power is supplied via the external mains adapter The stated voltage value must be the same as the local voltage Only use original KERN mains adapters Using other makes requires consent by KERN 6 4 Battery operation optional Remove the battery compartment cover on the underside of the scale and connect a 9 V block battery Replace the battery compartment cover For battery operation the balance has an automatic switch off function which can be activated or deactivated in the menu chapter 13 gt Inthe weighing mode press and hold longer until Pr is displayed gt Press 0 repeatedly until AF appears gt Acknowledge with gt Use 0 now to select between the following two settings AF on In order to save the battery the balance switches automatically off after 3 minutes w
17. cy If either of them is instable or flawed the result too will be instable or flawed p density of sample A weight of the sample in air B Weight of the sample in the aid liquid Po Density of the aid liquid 9 2 Influence Factors for Measurement Errors 9 2 1 Air bubbles A small bubble with a diameter of 1 mm results in a raise of 0 5 mg while those with 2 mm already produce a raise of A mg Therefore make sure that no air bubbles adhere on the fixed object or sinker that is immersed in the liquid An oily surface causes air bubbles when immersing in the liquid so gt degrease the solvent resistant solid sample gt clean all parts that are immersed regularly and don t touch them with bare fingers Don t lay solid samples particularly flat objects outside of the liquid on the sample dish because this results in air bubbles by the joint immersion 9 2 2 Solid body sample A sample possessing too great a volume that is immersed in fluid will result in an increase in fluid level inside the glass pitcher As a result part of the suspension bracket of the sifting bowl 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 34 EMB V BA e 1210 9 2 3 Liquids solids are generally not sensitive to temperature changes so that the corresponding density changes are not
18. ded to be used as a non automatic balance i e the material to be weighed is manually and carefully placed in the centre of the weighing pan As soon as a stable weighing value is reached the weighing value can be read 3 2 Improper Use e Do not use balance for dynamic add on weighing procedures if small amounts of goods to be weighed are removed or added The stability compensation installed in the balance may result in displaying an incorrect measuring value Example Slowly draining fluids from a container on the balance e Do not leave permanent load on the weighing pan This may damage the measuring system e Impacts and overloading exceeding the stated maximum load max of the balance minus a possibly existing tare load must be strictly avoided Balance may be damage by this e Never operate balance in explosive environment The serial version is not explosion protected e The structure of the balance may not be modified This may lead to incorrect weighing results safety related faults and destruction of the balance e The balance may only be used according to the described conditions Other areas of use must be released by KERN in writing 3 3 Warranty Warranty claims shall be voided in case e Our conditions in the operation manual are ignored e The appliance is used outside the described uses e The appliance is modified or opened e Mechanical damage or damage by media liquids natural wear and tear
19. eights of other nominal values see table 13 3 but not the optimum for measuring technique 3 Observe stable environmental conditions A warming up time see chapter 1 is required for stabilization 35 Ensure that there are no objects on the weighing pan Procedure EMB 200 3V as an example ON OFF TARE 2 Press and hold down longer the display shows CAL briefly Then the display shows the exact size of the adjustment weight See chapter 13 3 1 Start balance by pressing 3 During this display set the adjustment weight in the middle of the weighing plate EMB V BA e 1210 13 TARE 4 Press 9 short time later there appears CAL F then the automatic return 14 to the weighing mode In the display there appears the value of the adjustment weight An error during adjustment or the use of an incorrect adjusting weight will result in an error message CAL E Repeat adjustment Keep the adjustment close to the balance Daily control of the weighing exactness is recommended for quality relevant applications EMB V BA e 1210 7 Basic Operation EMB 200 3V as an example gt Press the ON OFF key Start up The balance will carry out a self test As soon as the ON weight display appears the balance is ready for OFF weighing v Switching Off gt Press ON OFF button the display disappears ON TATA jg MA Weighing gt Place goods to be weighed on balance gt W
20. ga EHE NE aa a AA NG A Ba aa Sa A GK Kg aa A NE ag aaa Ka Da aana La ha aan AA BEK 40 Description of individual menu ItOMS cccccceccceeeceeceeeceeeceeeceueceeeseueseeeseeeseeeneeenes 41 interlace parameters aan 44 Data OUTDUL RS 232 C abian aaa nada aai 45 Service maintenance disposal 2200000000000n0nn0nnunnun nun nun nun nun nun 47 ES SEE EN RESET SEIEN GERT RA NR A TE E A NK DIRT 47 SEIVICEe Maintenance areas ant BN A A eaten A A Ga AN 47 DISDO Als a aaa aa ag aa nice net Pa AN a NG JEN a JE aa nagan ga agin a D aa ak ag a a ga Ba a a a aa an ga NENENG 47 INStant NG inaa aa aa dimen ven sh A RT Ha EEE GG Eb TREE 48 EMB V BA e 1210 3 1 Technical data Te Emma Recommended adjustment 200 g weight not added class F1 F1 Stabiization time pica an C BEE TT max 80 not condensing Housing B x D x H mm 170 x 240 x 39 Battery operation optional as Operating time 12 h Mains adapter 100 mA 9V AUTO OFF function Bih With battery operation Underfloor weighing Standard hooks Interface RS 232 standard 4 EMB V BA e 1210 2 Appliance overview KERN EMB 200 3V KERN EMB 2000 2V bottom side 2 Eio ee o Ku 6 9 Weighing pan RS 232 Display Battery compartment Keyboard Underfloor weighing EMB V BA e 1210 2 1 KERN EMB 200 3V with installed density kit KERN YDB 01 0 Upper sample dish of the immersion basket
21. he RS232 interface t Function No data are sent the balance carries out the tare function a Format for stable values 1 2 3 j4 5 je 7 8 9 10 11 12 13 14 15 16 17 18 M IS Ni N Na Na Ns Ne Nz Ne No Na IB Us U2 Us CR LF b Format in case of fault 1 2 3 14 15 6 7 18 9 110111112 113114115 16 17 18 BIB B B B B IB IB IB IB IB IE r Ir jo r ER LF c Format for unstable values 1 2 3 j4 5 je 7 8 9 10 11 12 13 14 115 16 17 18 M IS Na N Na N4 Ns Ne N7 Ne No Na IB B B IB ICRILF AU PC The weighing values are sent automatically and continuously no matter if the value is stable or unstable d Format for stable values 1 2 3 4 s je 7 8 9 10 11 12 13 14 15 16 17 18 M S_ N No Na Na Ns Ng Nz Ne No Nio B Us Us Us CR LF e Format in case of fault 1 2 13 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 BIB IB B_ B IB JB IB B_ B B JE r r jo r CRLF f Format for unstable values 1 2 3 j4 5 je 7 8 9 192 11 12 J18 14 1i5 16 17 18 M S_ N N Na Na Ns Ne N7 Ne No Na IB B B IB ICRILF 46 EMB V BA e 1210 Symbols Blank or M Space character or negative sign 10 numeric ASCII codes for weight values including decimal places or blanks wi 3 ASCII codes for weighing unit pcs Yo or blank Space ASCII code or E
22. hing device cccseececcseeeeeeeeeeeeeeaeeeeeenaaeees 31 2 EMB V BA e 1210 15 3 Preconditions for Precise Measurements u u00sa0000a0nunannanannanan name 34 Calculation of Results wccccecnccetsz ansdrtuc ce nnn wortanneancuilsanasenseneeesmhecusws nennen 34 Influence Factors for Measurement ErroOrs c ccccccececcecceccecccceccaccuceneaceneeneaueneeaees 34 Air OUD DIGS aint 2 ne a as Sc ee Da er eae 34 Solid pody sample A En 34 LENAN IS ee ee AN Ng GB KI AAN a Da LAN AN JP ANING a Ag a a a ha E 35 SINTING hse aa D L Tian gak a a NA KP IS aga a a EE an Toate A aa a tite a E 35 Sinker for density determination Of liquids u00s00440400000Bnnnnnnn ne nnnnnnnnnnnnnnnnnnn nennen eee 35 General information ee rer 35 Density Relative DESI as aaa a agan aaa a a a a a KE ag KA a a kan aa aaa adani 35 Diit OL BAIA Display zer dot cas anana ataga aaa aa BA aaa NG Ga SARA aT aaa a DAB aa Ga aa a Dana aaa aaa a 35 Density Table for Fluids 2 2002200200020000000n0n ann nun ann ann nnnn nun nnn nun 36 Uncertainty of Measurement for Density Determination of Solids 37 User Instructions u 0u u000annannannannunnnn ann ann anna nun nun nun nun anna nun nun nun nun nun unen 38 Ment Ve en aoe anon ie SE SERIE EN nerd aes See ere arte MeCN aa SENSE SEA aes eee ae 39 Navigation I ING MENU sa aaa aa aga gae ga aa a g Ba aa a 39 MENULOVENVIEW aga naga NG na
23. ithout weighing AF off Switch off function deactivated gt Acknowledge selection by The balance returns to weighing mode lf the batteries are run down LO appears in the display Press ON OFF key and replace the batteries immediately lf the balance is not used for a longer time take out the batteries and store them separately Leaking battery liquid could damage the balance 6 5 Initial Commissioning A warming up time of 2 hours after switching on stabilizes the measuring values The accuracy of the balance depends on the local acceleration of gravity Strictly observe hints in chapter Adjustment 12 EMB V BA e 1210 6 6 Adjustment As the acceleration value due to gravity is not the same at every location on earth each balance must be coordinated in compliance with the underlying physical weighing principle to the existing acceleration due to gravity at its place of location only if the balance has not already been adjusted to the location in the factory This adjustment process must be carried out for the first commissioning after each change of location as well as in case of fluctuating environment temperature To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation 35 Prepare the required adjustment weight The adjustment should be made with the recommended adjustment weight see chap 1 Technical data Adjustment is also possible with the w
24. ll variations of weight it Is advisable to switch off this function lf Zero Tracking however is switched off the weighing display becomes more busy Keep pressed in the weighing mode until Pr is displayed Press 0 repeatedly until tr is displayed TARE Acknowledge using 9 the current setting is displayed L Select desired settings by 0 tjon Function activated tr off Function deactivated Acknowledge selection by EMB V BA e 1210 41 Selection The adjustment weight can be selected out of four CAL1 Cal 2 adjustment predetermined nominal values ca 1 4 1 2 3 4 Max In order to weight achieve high quality weighing results in the sense of the measuring technology it is recommended to select the nominal value as high as possible gt Keep pressed in the weighing mode until Pr is displayed Press 0 repeatedly until CAL will be displayed TARE gt Acknowledge using 9 the current setting is displayed 4 gt Select desired setting by 0 gt Acknowledge selection by Filter With the filter settings the scale can be tailored to the needs of the specific applications or environmental conditions gt Keep pressed in the weighing mode until Pr is displayed gt Press 0 repeatedly until FiltEr is displayed TARE gt Acknowledge using the current setting is displayed gt Select desired setting by s slow insensible I fast sen
25. moothen samples with rough surface e Take care that no water drips onto the upper sample dish when weighing with the help of tweezers e In order to reduce the surface tension of water and the friction of the liquid on the wire add three drops of a common detergent washing up liquid to the aid liquid density modification of dest water occurring due to the addition of tensides can be ignored e Oval samples can be held more easily with pincers when you cut grooves into them e The density of porous solids may only be determined approximately Buoyancy errors occur when not all the air is eliminated from the pores during immersion in the aid fluid e To avoid great vibrations of the balance place sample carefully e Avoid static charge e g dry sinker with cotton cloth only e If the density of your solid only deviates slightly from that of distilled water ethanol may be used as aid liquid However check beforehand whether the sample is solvent proof In addition you must observe the applicable safety regulations when working with ethanol e To avoid corrosion don t leave the density kit immersed in liquid for a long time 38 EMB V BA e 1210 13 Menu 13 1 Navigation in the menu Access to menu Change settings How to save settings and to exit the menu EMB V BA e 1210 In weighing mode keep the PRINT key pressed until Pr appears With help of 0 the individual menu items can be selected one after the o
26. of the sinker gt Surface tension of the liquid gt Air bubbles gt Immersion depth of the sample dish of sinker gt Porosity of the solid 18 EMB V BA e 1210 8 2 Density determination of solids For the determination of the density of solids the solid is first weighed in air and then in the aid liquid whose density is known From the weight difference results the buoyancy from where the software calculates the density As aid liquid usually distilled water or ethanol is used see density table chapter 10 8 2 1 Density determination while using the density kits KERN YDB 01 or YDB 02 For the density determination we recommend to work with the optional density kit KERN YDB 01 or YDB 02 This contains all the necessary structures and resources for a comfortable and precise determination of the density lf needed perform necessary adjustment prior to the installation of the density kit see chapter 6 6 When the density kit is installed correct adjustment is not possible For reasons of adjustment take away the density kit and place the standard weighing plate Fig Installed density kit KERN YDB 01 EMB V BA e 1210 19 Abb Installed density kit KERN YDB 02 20 EMB V BA e 1210 Install the density kit gt Disconnect scale from power supply gt Remove the standard weighing plate and replace it with the density kit Z Model EMB 2000 2V Ensuring correct positioning see illustration below gt
27. played weight is permanently e Draught air movement nanging e Table floor vibrations e The weighing plate is in contact with foreign matter e Electromagnetic fields static charging choose different location switch off interfering device if possible The weighing value is obviously e The display of the balance is not at zero wrong e Adjustment is no longer correct e The balance is on an uneven surface e Great fluctuations in temperature e Electromagnetic fields static charging choose different location switch off interfering device if possible Should other error messages occur switch balance off and then on again If the error message remains inform manufacturer 48 EMB V BA e 1210
28. s 7 Hang the sinker on the suspension device a 8 Press and the weight of the sinker in air is displayed example 9 If possible immerse the sinker bubble free in the aid liquid Make sure that the sinker is at least 1 cm submerged and doesn t touch the glass beaker 10 Press W and for a short time the weight of the sinker is displayed in the aid liquid example The scale determines the density of the liquid and then displays the result example When connecting an optional printer pressing of es will print the result see printout example chapter 8 3 1 Press P the balance will return to weighing mode For further measurements start at step 2 EMB V BA e 1210 33 9 Preconditions for Precise Measurements There are numerous error possibilities during density determination Accurate knowledge and caution are required to achieve precise results when applying this density kit in combination with the balance 9 1 Calculation of Results The balance displays results for density determination by giving four decimal places However this does not mean that the results are accurate down to the last decimal place as this would be the case for a calculated value Therefore all weighing results used for calculations have to be examined closely Example for density determination of solids To ensure high grade results numerators as well as common denominators of the formula below must show the desired accura
29. seeeneeeeeeneeneeeesenees 11 6 1 Installation Site Location of USC tic nee elle 11 6 2 WDACKING SCO Ol CONV CI er een 11 6 3 Mains Connection anne 12 6 4 Battery operation optional uu u0nsueenenennnennnennnenn nenn nenu nennen nennen nennen nennen 12 6 5 Initial Gommissioningescserka en nr a needed 12 6 6 AdUSIMEN aini sekaa na aa gak A aa Bah ka a a isses 13 7 Basic Operat ON Laka aa eee nee tera ENG TENG LANG TENG Eea N TEN NANA TE a BEA Ta Na NEG 15 8 Density determination u ee 17 8 1 Principle of Density Determination 40440044040n nennen onen nennen nennen nnn nennen 17 8 1 1 Influencing magnitudes and error SOUFCES ueennnenennennnennnnnnnnnennnnnnnnnennnnnnnnnennnnnnnnnennnnnnnnnennnnnn 18 8 2 Density determination Of solids 2 2u02240020002000nenn nenn nenne nenn ann nnnne nenne nenn namen 19 8 2 1 Density determination while using the density kits KERN YDB 01 or YDB O2 19 8 2 2 Density determination using the suspended weighing device uuus2204susonennne nennen nennen nen 24 8 2 3 Density determination of solid material with a density of less than 1 g cm seeen 27 8 3 Determining density of liquids 22u022400224002000nnne nenn nenn nenne nenn nnnennnnnnnne nenn nnnnenennn 29 8 3 1 Density determination while using the density kits KERN YDB 01 or YDB 02 29 8 3 2 Density determination using the suspended weig
30. sitive gt Acknowledge selection by N 2 EMB V BA e 1210 Reset to factory This function resets all balance settings to factory setting setting gt Keep pressed in the weighing mode until Pr is displayed gt Press 0 repeatedly until rSt is displayed DI gt Acknowledge using the current setting is displayed gt Select desired setting by 0 rSt yes Balance will be reset to factory setting rSt no The balance keeps its individual setting TARE gt Acknowledge selection by 9 The balance returns to weighing mode EMB V BA e 1210 43 13 4 Interface parameters Data transfer mode gt Keep D pressed in the weighing mode until Pr is displayed gt Acknowledge using the current setting is displayed gt Select desired setting by 0 Data output via remote control commands rE CR Data output using the PRINT key AU PC Continuous data output TARE gt Acknowledge selection by 9 The balance returns to weighing mode The baud rate defines the transfer speed vie the interface 1 Baud 1 Bit second gt Keep pressed r in the weighing mode until Pr is displayed Press 0 repeatedly until DAUd is displayed TARE gt Acknowledge using 9 the current setting is displayed U A Q 9 P D v gt Use 0 to seleci the desired settings 9600 gt 4800 gt 2400 gt 1200 gt 19200 TARE gt Acknowledge selection by 9 The balance returns to weighing
31. ther Use 0 to scroll forward Use to scroll backward Acknowledge selected menu item using TARE key the current setting is displayed Use 0 to scroll forward Use to scroll backward Each time you press the button the next setting is displayed see chapter 13 2 Menu Overview gt Press the TARE key balance will return to weighing mode 39 13 2 Menu overview Description of function Data transfer mode see chapter 13 4 Baud rate see chapter 13 4 Auto off battery operation see chap 6 4 Auto Zero see chapter 13 3 select the adjustment weight Filter See chapter 13 3 For adapting to the ambient conditions Reset to factory setting see chap 13 3 default setting 40 Description of options s Data output via remote control commands see chapter 14 Continuous data output see chapter 14 Automatic switch off function after Automatic switch off function after 3 min without changing load OFF slow insensible fast sensitive EMB V BA e 1210 13 3 Description of individual menu items Dosing and The Auto Zero function is used to tare small variations in weight Zero tracking automatically In the event that small quantities are removed or added to the material to be weighed incorrect weighing results can be displayed due to the stability compensation Example Slowly draining fluids from a container on the balance When apportioning involves sma
32. ts Reattach possibly supplied transport securing devices Secure all parts such as the weighing platform power unit etc against shifting and damage 10 EMB V BA e 1210 6 Unpacking Setup and Commissioning 6 1 Installation Site Location of Use The balance is designed in a way that reliable weighing results are achieved in common conditions of use You will work accurately and fast if you select the right location for your balance On the installation site observe the following Place the balance on a firm level surface Avoid extreme heat as well as temperature fluctuation caused by installing next to a radiator or in the direct sunlight Protect the balance against direct draughts due to open windows and doors Avoid jarring during weighing Protect the balance against high humidity vapours and dust Do not expose the device to extreme dampness for longer periods of time Non permitted condensation condensation of air humidity on the appliance may occur if a cold appliance is taken to a considerably warmer environment In this case acclimatize the disconnected appliance for ca 2 hours at room temperature Avoid static charge of goods to be weighed or weighing container Do not operate in areas with hazard of explosive material or in potentially explosive atmospheres due to materials such as gasses steams mists or dusts Keep away chemicals such as liquids or gasses which could attack and damage the b
33. uent parameters such as described in chapter 6 have not been taken into consideration Approximate display at density measurements When using a balance with a readability of 001g Weight of sample 1000 2000 3000 4000 g c 3 03 0 02 0 3 0 06 0 03 0 01 0 004 0 003 0 002 0 002 when using a balance with a readability of 0 1 g the numbers in this table have to be multiplied with 10 When using a balance with a readability of 0 001 9 divide the numbers through 10 Reading example for table In a balance with a resolution of 0 001 g and a sample with a weight of 10 g whose density is 5 g cm the display graduation is at 0 007 g cm EMB V BA e 1210 37 12 User Instructions e To forma reproducible mean value several density measurement are necessary e Remove fat from solvent resistant sample sinker beaker e Regularly clean sample dishes sinker beaker do not touch immersed part with your hands e Dry sample sinker pincers after each measurement e Adjust sample size to sample dish ideal sample size gt 5 g e Only use distilled water e When immersing for the first time lightly shake sample dishes and sinker in order to Dissolve air bubbles e Always ensure that when re immersing into the liquid no additional bubbles adhere it is better to use pincers to place the sample e Remove firmly adherent air bubbles with a fine brush or a similar tool e To avoid adherent air bubbles s
34. y instead of the density of a fluid in a formula produces an incorrect result In the case of fluids only their density is ohysically meaningful 9 3 2 Drift of Balance Display The drifting of a balance does not influence the final result of the density determination although the shown weight of weighing in air is affected Accurate values are merely required if the density of fluids is determined by means of a sinker When changing the ambient temperature or location an adjustment of the balance is necessary Hereto remove the density kit and carry out an adjustment with the standard weighing plate See chapter 6 6 EMB V BA e 1210 35 10 Density Table for Fluids Density p g cm PC Waters Ethyl alcohol Methyl alcohol 10 0 9997 TE 0 8009 11 096 j0 7969 0 8000 12 0 9995 or ar 13 jo lo 0 7982 14 jo or 0 7972 15 jo j0 7935 Or 16 jo oa oT 18 016 j0 7909 O5 19 01 0 7926 20 12 or oT 214 090 or oT 22 ou Tr Tr 23 010 or or 24 093 j0 7859 or 25 f0 9971 or 07870 26 1 Tora or 28 0 9963 oT 07842 29 090 or 0 7833 30 010 0 7824 31 094 j0 7800 0 7814 32 10 oT or 33 jo j0 77183 07896 34 0 Ta Tr 35 _ 0 9944 oT jo _ 36 EMB V BA e 1210 11 Uncertainty of Measurement for Density Determination of Solids This table shows the approximate readability of the balance in connection with the density kit Observe that these values have only been determined by calculation and that infl
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