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KERN & Sohn GmbH

Ziegelei 1

D-72336 Balingen

E-Mail: [email protected]

Phone: +49-[0]7433- 9933-0

Fax: +49-[0]7433-9933-149

Internet: www.kern-sohn.com

Operating instructions

Density Scale

KERN EMB-V

Version 2.0
01/2013
GB

EMB-V-BA-e-1320

Содержание EMB-V

Страница 1: ...Ziegelei 1 D 72336 Balingen E Mail info kern sohn com Phone 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com Operating instructions Density Scale KERN EMB V Version 2 0 01 2013 GB E...

Страница 2: ...nsport 10 6 Unpacking Setup and Commissioning 11 6 1 Installation Site Location of Use 11 6 2 Unpacking Scope of delivery 11 6 3 Mains connection 12 6 4 Battery operation optional 12 6 5 Initial Commi...

Страница 3: ...information 35 9 3 1 Density Relative Density 35 9 3 2 Drift of Balance Display 35 10 Density Table for Fluids 36 11 Uncertainty of Measurement for Density Determination of Solids 37 12 User Instruct...

Страница 4: ...added class 200 g F1 2000 g F1 Stabilization time typical 2 5 sec Warm up time 2 h Unit g Operating temperature 5 C 35 C Humidity of air max 80 not condensing Housing B x D x H mm 170 x 240 x 39 Weig...

Страница 5: ...EMB V BA e 1210 5 2 Appliance overview KERN EMB 200 3V KERN EMB 2000 2V bottom side Weighing pan RS 232 Display 5 Battery compartment Keyboard 6 Underfloor weighing...

Страница 6: ...B V BA e 1210 6 2 1 KERN EMB 200 3V with installed density kit KERN YDB 01 Upper sample dish of the immersion basket Weighing plate density kit Beaker Lower sample dish of the immersion basket Platfor...

Страница 7: ...B V BA e 1210 7 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 Weighing plate density k...

Страница 8: ...t 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 acc...

Страница 9: ...ng fluids from a container on the balance Do not leave permanent load on the weighing pan This may damage the measuring system Impacts and overloading exceeding the stated maximum load max of the bala...

Страница 10: ...ions 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...

Страница 11: ...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 c...

Страница 12: ...ayed Press repeatedly until AF appears Acknowledge with Use 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...

Страница 13: ...recommended to adjust the balance periodically in weighing operation Prepare the required adjustment weight The adjustment should be made with the recommended adjustment weight see chap 1 Technical da...

Страница 14: ...e 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 adjus...

Страница 15: ...test As soon as the weight display appears the balance is ready for weighing Switching Off Press ON OFF button the display disappears Weighing Place goods to be weighed on balance Wait for stability d...

Страница 16: ...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 exhaus...

Страница 17: ...m Additional frequently applied units include 1 g cm3 1 kg m 3 1 g l The determination of the density is based on the Archimedean Principle which states that every object that is dipped into a liquid...

Страница 18: ...id displaced by the volume of the body The volume V of the immersed body equals the volume of the displaced fluid G buoyancy of sinker Buoyancy of sinker Weight of the sinker in air A weight sinker in...

Страница 19: ...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...

Страница 20: ...EMB V BA e 1210 20 Abb Installed density kit KERN YDB 02...

Страница 21: ...plate Place beaker in the centre of the platform Make sure that it has no contact with the frame Hang the immersion basket on the rack Make sure that it is centred in the recess Pour the liquid into...

Страница 22: ...d is briefly displayed followed by the actual entered density of the aid liquid If necessary change as described later Enter the density of the aid liquid while taking into account the current tempera...

Страница 23: ...ress 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...

Страница 24: ...erature so that it doesn t touch the bottom of the glass beaker but is still completely submerged Now it is weighed again From the two weight values the scale determines the density of the solid and d...

Страница 25: ...ater at 19 C SOLId is briefly displayed followed by the actual entered density of the aid liquid Enter the density of the aid liquid while taking into account the current temperature See density table...

Страница 26: ...ake sure that the sample is at least 1 cm immersed and doesn t touch the glass beaker Press and for a short time the weight of the sample in the aid liquid is displayed example The scale determines th...

Страница 27: ...anol approx 0 8 g cm 3 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...

Страница 28: ...e 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...

Страница 29: ...e 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 Mode to call up density determination of...

Страница 30: ...liquids 7 Place sinker in the upper sample dish 8 Press 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...

Страница 31: ...hing mode For further measurements start at step 2 8 3 2 Density determination using the suspended weighing device How to prepare the weighing balance Turn off the scale and turn it around Open closin...

Страница 32: ...ty 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 addition...

Страница 33: ...that the sinker is at least 1 cm submerged and doesn t touch the glass beaker 10 Press and for a short time the weight of the sinker is displayed in the aid liquid example The scale determines the den...

Страница 34: ...e sample in the aid liquid o 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 wi...

Страница 35: ...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 appli...

Страница 36: ...927 0 7954 17 0 9988 0 7918 0 7945 18 0 9986 0 7909 0 7935 19 0 9984 0 7901 0 7926 20 0 9982 0 7893 0 7917 21 0 9980 0 7884 0 7907 22 0 9978 0 7876 0 7898 23 0 9976 0 7867 0 7880 24 0 9973 0 7859 0 78...

Страница 37: ...0 1 0 01 0 003 0 002 0 0005 0 0003 0 0003 0 0002 0 0002 3 0 4 0 04 0 01 0 005 0 001 0 001 0 0005 0 0004 0 0004 5 0 7 0 07 0 01 0 008 0 002 0 001 0 001 0 001 0 0006 8 1 2 0 1 0 02 0 01 0 003 0 002 0 00...

Страница 38: ...when weighing with the help of tweezers 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 li...

Страница 39: ...one after the other Use to scroll forward Use to scroll backward BAUD Change settings Acknowledge selected menu item using TARE key the current setting is displayed Use to scroll forward Use to scrol...

Страница 40: ...bAUd 19200 9600 4800 2400 1200 Auto off battery operation see chap 6 4 AF on Automatic switch off function after 3 min without changing load ON off Automatic switch off function after 3 min without c...

Страница 41: ...ability compensation Example Slowly draining fluids from a container on the balance When apportioning involves small variations of weight it is advisable to switch off this function If Zero Tracking h...

Страница 42: ...ode until Pr is displayed Press repeatedly until CAL will be displayed Acknowledge using the current setting is displayed Select desired setting by Acknowledge selection by Filter With the filter sett...

Страница 43: ...d in the weighing mode until Pr is displayed Press repeatedly until rSt is displayed Acknowledge using the current setting is displayed Select desired setting by rSt yes Balance will be reset to facto...

Страница 44: ...PRINT key AU PC Continuous data output Acknowledge selection by The balance returns to weighing mode Baud rate PR BAUD The baud rate defines the transfer speed vie the interface 1 Baud 1 Bit second Ke...

Страница 45: ...interface of the printer PC Faultless operation requires an adequate KERN interface cable optional Communication parameters e g baud rate of the scale and printer must match 1 Technical data 8 bit AS...

Страница 46: ...ies out the tare function a Format for stable values 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 M S N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 B U1 U2 U3 CR LF b Format in case of fault 1 2 3 4 5 6 7 8 9 10 11...

Страница 47: ...Spilled weighing goods must be removed immediately 15 2 Service maintenance The appliance may only be opened by trained service technicians who are authorized by KERN Ensure that the balance is regul...

Страница 48: ...erted The displayed weight is permanently changing Draught air movement Table floor vibrations The weighing plate is in contact with foreign matter Electromagnetic fields static charging choose differ...

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