DE579792C - Device for determining the potassium content - Google Patents
Device for determining the potassium contentInfo
- Publication number
- DE579792C DE579792C DE1930579792D DE579792DA DE579792C DE 579792 C DE579792 C DE 579792C DE 1930579792 D DE1930579792 D DE 1930579792D DE 579792D A DE579792D A DE 579792DA DE 579792 C DE579792 C DE 579792C
- Authority
- DE
- Germany
- Prior art keywords
- determining
- potassium content
- tube
- ampere
- hour meter
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
Einrichtung zur Bestimmung des Kaliumgehaltes Gegenstand des Hauptpatents ist ein Verfahren zur Kaliumgehaltsbestimmung, bei welchem durch Anwendung eines sogenannten Zählrohres in Verbindung mit einer Zähl-oder Registriervorrichtung eine laufende Kaliumgehaltsmessung ermöglicht wird.Device for determining the potassium content is the subject of the main patent is a method for determining the potassium content in which a so-called counter tube in connection with a counting or recording device ongoing potassium content measurement is enabled.
Gemäß der vorliegenden Erfindung wird als Registriereinrichtung zur Addierung der durch die Kaliumstrahlung ausgelösten Stromstöße ein Amperestundenzähler verwendet, wie er zur Messung von Strommengen vielfach gebräuchlich ist. Gegenüber anderen Zähleinrichtungen, z. B. gegenüber dem für diese Zwecke ebenfalls vorgeschlagenen umlaufenden Relais nach Art der in der automatischen Telephonie gebräuchlichen Drehwähler, haben Amperestundenzähler den Vorteil einer höheren Betriebssicherheit, da Klemmungen und andere Störungen, die bei der schnellen Betätigung der Zählrelais auftreten können, hier nicht möglich sind. Die Schaltung muß, wie leicht ersichtlich ist, so getroffen werden, daß in dem Anodenkreis der Röhre, in welchem der Amperestundenzähler liegt, .nur im Augenblick des Stromstoßes ein Gleichstrom fließt. Dies läßt sich leicht dadurch erreichen, daß der letzten Röhre eine negative Gittervorspannung solcher Größe erteilt wird, daß der Ruhestrom im Anodenkreis gleich Null ist.According to the present invention is used as a registration device for Adding the current impulses triggered by the potassium radiation an ampere-hour meter used as it is widely used for measuring amounts of electricity. Opposite to other counting devices, e.g. B. versus the one also proposed for these purposes rotating relay like the rotary selector used in automatic telephony, Ampere-hour meters have the advantage of higher operational reliability because of the clamps and other malfunctions that occur when the counting relays are operated quickly can, are not possible here. As can be easily seen, the circuit must be taken so that in the anode circuit of the tube in which the ampere-hour meter a direct current flows only at the moment of the current surge. This can be easily achieved by giving the last tube a negative grid bias is given such a size that the quiescent current in the anode circuit is zero.
In den Abbildungen sind zwei Beispiele solcher Anordnung wiedergegeben.Two examples of such an arrangement are shown in the figures.
i bedeutet das Zählrohr, durch dessen Verschlüsse 2 und 3 die Elektrode ¢ hindurchgeführt ist. Durch eine Batterie 5 wird zwischen die Elektrode q. und das Rohr i eine Gleichspannung von i ooo bis 2000 Volt gelegt, zweckmäßig derart, daß das Rohr gegen die Elektrode negativ geladen ist. In den Stromkreis ist außerdem ein hochohmiger Widerstand 6 eingeschaltet, welcher an das Gitter einer Verstärkerröhre angeschlossen ist. Mit dieser ist eine zweite Verstärkerröhre verbunden, in deren Anodenkreis ein umlaufender Amperestundenzähler i i oder ein elektrolytischer Amperestundenzähler 12 liegt. Die an das Gitter der zweiten Röhre gelegte negative Vorspannung ist so groß, daß in dem Anodenkreis dieser Röhre kein Ruhestrom fließt. Im Augenblick eines Stromstoßes gelangt an das Gitter ein positiver Spannungsimpuls, so daß im Anodenkreis ein Stromstoß erfolgt. Dieser wird im Falle der Abb. i. durch den Amperestundenzähler i i gemessen, dessen Umdrehungszahl somit der Impulsfrequenz proportional ist und in der bekannten Weise durch ein nicht gezeichnetes Zählwerk angezeigt wird.i means the counter tube, through its closures 2 and 3 the electrode ¢ is passed through. A battery 5 is between the electrode q. and the tube i placed a DC voltage of 10000 to 2000 volts, expediently in such a way, that the tube is negatively charged against the electrode. In the circuit is as well a high-ohmic resistor 6 switched on, which is connected to the grid of an amplifier tube connected. With this a second amplifier tube is connected, in whose Anode circuit a revolving ampere-hour meter i i or an electrolytic ampere-hour meter 12 lies. The negative bias applied to the grid of the second tube is like this large that no quiescent current flows in the anode circuit of this tube. At the moment one Current surge arrives at the grid a positive voltage pulse, so that in the anode circuit a power surge occurs. This is in the case of Fig. I. through the ampere-hour meter i i measured, the number of revolutions is thus proportional to the pulse frequency and is indicated in the known manner by a counter (not shown).
Im Falle der Abb.2 werden die Stromstöße durch den Elektrolytzähler 12 addiert, dessen Wirkungsweise als bekannt vorausgesetzt Werden kann und der sich durch besonders hohe Empfindlichkeit und Betriebssicherheit auszeichnet.In the case of Fig.2, the current surges are through the electrolyte meter 12 added, whose mode of action can be assumed to be known and which characterized by particularly high sensitivity and operational reliability.
Claims (2)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK109394D DE536006C (en) | 1928-05-07 | 1928-05-07 | Method for determining the potassium content in the ground, in deposits, technical products, etc. like |
DEK115762D DE575375C (en) | 1928-05-07 | 1929-07-15 | Method for determining the potassium content |
FR679444T | 1929-07-27 | ||
GB24623/29A GB340231A (en) | 1928-05-07 | 1929-08-12 | A process for determining the potassium content in spaces containing potassium |
DE579792T | 1930-07-02 | ||
GB20623/30A GB351266A (en) | 1928-05-07 | 1930-07-08 | Improvements in apparatus for determining potassium content in spaces containing potassium |
Publications (1)
Publication Number | Publication Date |
---|---|
DE579792C true DE579792C (en) | 1933-06-30 |
Family
ID=6570721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930579792D Expired DE579792C (en) | 1928-05-07 | 1930-07-02 | Device for determining the potassium content |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE579792C (en) |
-
1930
- 1930-07-02 DE DE1930579792D patent/DE579792C/en not_active Expired
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