ELECTRONIC TYPE EVEN BALANCE
PURPOSE: To measure the weight during the stirring step by building a means for driving a magnetic stirring member into the scale. CONSTITUTION: A scale 20 receives a means for driving a magnetic stirring member made of a permanent magnet 29 arranged on the bottom of a case 30 or a filter cell. Coil...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE: To measure the weight during the stirring step by building a means for driving a magnetic stirring member into the scale. CONSTITUTION: A scale 20 receives a means for driving a magnetic stirring member made of a permanent magnet 29 arranged on the bottom of a case 30 or a filter cell. Coils 24, 25, 26 forming the drive means are secured onto a soft magnetic return path member 23. A weighting system comprises a system carrier 1 secured with a load receiver 2 movably in the vertical direction. A force corresponding to the weight of a matter to be weight is transmitted from the load receiver 2 through a coupling member 9 to the load arm of a transmission lever 7. A compensation current from the coil 11 in a permanent magnet system 10 induces a measuring voltage in a measuring resistor 15 and the measurements are fed to a digital signal processing unit 18 and indicated by an indicator 19. |
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