DE726641C - Scales for weighing electrostatically charged items - Google Patents

Scales for weighing electrostatically charged items

Info

Publication number
DE726641C
DE726641C DES132218D DES0132218D DE726641C DE 726641 C DE726641 C DE 726641C DE S132218 D DES132218 D DE S132218D DE S0132218 D DES0132218 D DE S0132218D DE 726641 C DE726641 C DE 726641C
Authority
DE
Germany
Prior art keywords
weighing
scales
electrostatically charged
charged items
items
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DES132218D
Other languages
German (de)
Inventor
Dr-Ing Siegfried Heller
Erich Sartorius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr-Ing Siegfried Heller
Original Assignee
Dr-Ing Siegfried Heller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr-Ing Siegfried Heller filed Critical Dr-Ing Siegfried Heller
Priority to DES132218D priority Critical patent/DE726641C/en
Application granted granted Critical
Publication of DE726641C publication Critical patent/DE726641C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G1/00Weighing apparatus involving the use of a counterweight or other counterbalancing mass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Elimination Of Static Electricity (AREA)

Description

Bei der Wägung von hochwertigen Gläsern auf empfindlichen Waagen macht sich, bisweilen eine außerordentlich schlechte Konstanz bemerkbar. Unter manchen Umständen ist eine Wägung· sogar unmöglich, da sich die Waage in kurzer Zeit in unkontrollierbarer Weise stark verstellt. Ähnliche Erscheinungen zeigen sich bei der Wägung von trockenem Papier, Schellack, Cellulose u. dgl.When weighing high-quality glasses on sensitive scales, sometimes an extremely poor consistency is noticeable. In some circumstances weighing is · even impossible, since the balance becomes uncontrollable in a short time Way heavily disfigured. Similar phenomena appear when weighing dry paper, shellac, cellulose and the like.

Es ist bereits bekannt, daß diese Effekte durch elektrostatische Aufladung der gut isolierenden Gläser bzw. anderen Wiegegutes hervorgerufen werden. Auch elektrostatische Aufladungen der Glasscheiben, hervorgerufen durch Putzen derselben, können ähnliche Störungen verursachen. Zur Beseitigung dieser Fehler ist vorgeschlagen worden, Waagegehäuse aus Metall zu benutzen bzw. elektrostatisch aufgeladenes Wiegegut über einer Flamme zu entladen. Als Störschutz gegen aufgeladene Glasscheiben des Gehäuses ist femer auch die gitterförmige Anbringung von Stanniolstreifen in der Fachliteratur erwähnt. Vorliegende Erfindung bezieht sich auf eine Einrichtung an Waagen, die geeignet ist, die groben fehlerhaften Einwirkungen von ungewollt aufgeladenem Wiegegut im wesentlichen auf die Zunge der Waage zu beseitigen, da es nicht ratsam ist, ja in vielen FäUeix sogar nicht möglich ist, das Wiegegut nach den bekannten Methoden vor der Wägung zu entladen. Eingehende Versuche haben ergeben, daß es praktisch genügt, die Zunge der Waage gegenüber der Last elektrostatisch abzuschirmen. Diese Abschirmung wird in zweckmäßigster Weise dadurch erreicht, daß man den am Waagebalken befestigten Zeiger mit Abdeckblechen umgibt. Es versteht sichIt is already known that these effects are caused by electrostatic charging of the well-insulating Glasses or other items to be weighed. Electrostatic charges on the glass panes are also caused cleaning them can cause similar disturbances. To eliminate this Failure has been suggested to use metal or electrostatic scale housings discharging charged items over a flame. As interference protection against charged glass panes in the housing the grid-like attachment of tinfoil strips is also mentioned in the specialist literature. The present invention relates to a device on scales which is suitable for the grossly incorrect effects of unintentionally charged material to be weighed essentially to eliminate the tongue of the scales, as it is not advisable, yes in many falsehoods It is even not possible to weigh the goods according to the known methods before weighing to unload. Thorough experiments have shown that it is practically sufficient to use the tongue Electrostatically shield the balance from the load. This shield is used in most expediently achieved by the pointer attached to the balance beam surrounds with cover plates. It goes without saying

von selbst, daß man diese Abschirmung in leitende Verbindung mit den übrigen Teilen der Waage bringt.by itself that this shielding is in conductive connection with the other parts brings the scales.

Eine damit eingerichtete Waage ist zur Wägung' von aufgeladenem Wiegegut aller Art praktisch brauchbar, ohne daß die Anwendung kostspieliger, langsam wirkender (radioaktive Präparatej, weitere Fehler verursachender oder gefährlicher (Flamme bei feuergefährlichen Substanzen ι Mittel notwendig ist. Die dadurch erzielte Zeitersparnis ist hoch zu bewerten und bedeutet einen unbedingten Fortschritt.A scale set up with it is for weighing the loaded items of all Kind of practically usable without the use of expensive, slow-acting (radioactive preparations, other error-causing or dangerous (flame at Flammable substances ι means is necessary. The time saved as a result is to be valued highly and means unconditional progress.

Claims (1)

Patentanspruch:Claim: Waage zur Wägung, elektrostatisch aufgeladenen Wieg'egutes, dadurch gekennzeichnet, daß die Zunge der Waage gegenüber der Last elektrostatisch abgeschirmt ist.Scales for weighing, electrostatically charged goods to be weighed, characterized in that the tongue of the balance is electrostatically shielded from the load is.
DES132218D 1938-05-24 1938-05-24 Scales for weighing electrostatically charged items Expired DE726641C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES132218D DE726641C (en) 1938-05-24 1938-05-24 Scales for weighing electrostatically charged items

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES132218D DE726641C (en) 1938-05-24 1938-05-24 Scales for weighing electrostatically charged items

Publications (1)

Publication Number Publication Date
DE726641C true DE726641C (en) 1942-10-17

Family

ID=7539001

Family Applications (1)

Application Number Title Priority Date Filing Date
DES132218D Expired DE726641C (en) 1938-05-24 1938-05-24 Scales for weighing electrostatically charged items

Country Status (1)

Country Link
DE (1) DE726641C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058274B (en) * 1951-07-27 1959-05-27 Dr Eberhard Schneller Knife or needle pivot bearings for microbalances

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058274B (en) * 1951-07-27 1959-05-27 Dr Eberhard Schneller Knife or needle pivot bearings for microbalances

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