DE920923C - Circuit arrangement for functional testing or operational readjustment of compensographs - Google Patents
Circuit arrangement for functional testing or operational readjustment of compensographsInfo
- Publication number
- DE920923C DE920923C DES29752A DES0029752A DE920923C DE 920923 C DE920923 C DE 920923C DE S29752 A DES29752 A DE S29752A DE S0029752 A DES0029752 A DE S0029752A DE 920923 C DE920923 C DE 920923C
- Authority
- DE
- Germany
- Prior art keywords
- circuit arrangement
- bridge
- readjustment
- operational
- functional testing
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
Die Erfindung bezieht sich auf eine Schaltungsanordnung zur Funktionsprüfung bzw. betriebsmäßigen Nachjustierung von Kompensographen, bei denen der Meßfühler in einer Brückenschaltung liegt. The invention relates to a circuit arrangement for functional testing or operational readjustment of compensographs where the sensor is in a bridge circuit.
Bei diesen Geräten ist es insbesondere dann, wenn sie mit unterdrücktem Nullpunkt arbeiten, unmöglich, während des Betriebes festzustellen, ob das Gerät noch den richtigen Wert anzeigt bzw. infolge einer Störung in der Meßschaltung Abweichungen vom Eichwert auftreten. In the case of these devices, it is particularly important when they are with suppressed Zero work, impossible to determine during operation whether the device still shows the correct value or deviations as a result of a malfunction in the measuring circuit of the calibration value occur.
Gemäß der Erfindung gelingt eine solche Prüfung durch Kurzschließen des Meßfühlers und gleichzeitiges Einschalten eines zusätzlichenWiderstandes in einem Brückenzweig. Der zusätzliche Widerstand läßt sich so bemessen, daß bei kurzgeschlossenem Meßfühler die durch sein Einschalten bewirkte Verstimmung der Brücke zur Einstellung des Meßwerkzeigers bzw. der Schreibfeder auf einen auf der Skala bzw. dem Registrierstreifen markierten Wert führt. Die Prüfung oder die Nachjustierung läßt sich dann im Betrieb durch Drücken eines Eichknopfes durchführen. Es erfolgt hierbei die beschriebene Verstimmung der Meßbrücke, und das Gerät stellt sich beim störungsfreien Betrieb auf die erwähnte vorgegebene Marke ein. According to the invention, such a test is achieved by short-circuiting of the sensor and at the same time switching on an additional resistor in a bridge branch. The additional resistance can be dimensioned so that when a short-circuited Sensor the detuning of the bridge caused by being switched on for setting of the measuring tool or the pen on one of the scale or the recording strip marked value leads. The test or readjustment can then be carried out during operation by pressing a calibration button. The described procedure takes place here Detuning of the measuring bridge, and the device turns itself into trouble-free operation on the specified brand mentioned.
In der Zeichnung ist ein Ausführungsbeispiel einer erfindungsgemäß wirkenden Schaltungsanordnung schematisch dargestellt. Der Meßfühler M kann durch den Schalter I kurzgeschlossen werden. In the drawing, an embodiment of one according to the invention is shown acting circuit arrangement shown schematically. The sensor M can by the switch I short-circuited.
Mit dem Schalter 1 ist der Schalter II gekuppelt, bei dessen Einlegen der Widerstand Rp zum Brükkenwiderstand R parallel geschaltet wird. Hierdurch wird die Brücke in gewünschter Weise verstimmt. Durch den dabei in der Brückendiagonalen fließenden, mittels des Verstärkers Z verstärkten Strom wird nun der Spannungsabgriff Sp auf den vorgegebenen, durch eine Marke auf der Skala oder dem Registrierstreifen festgelegten Wert selbsttätig eingestellt.Switch II is coupled to switch 1 when it is inserted the resistor Rp is connected in parallel to the bridge resistor R. This will the bridge is detuned in the desired way. By doing this in the bridge diagonal flowing current, amplified by means of the amplifier Z, is now the voltage tap Sp on the specified, by a mark on the scale or the register strip set value automatically.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES29752A DE920923C (en) | 1952-08-13 | 1952-08-13 | Circuit arrangement for functional testing or operational readjustment of compensographs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES29752A DE920923C (en) | 1952-08-13 | 1952-08-13 | Circuit arrangement for functional testing or operational readjustment of compensographs |
Publications (1)
Publication Number | Publication Date |
---|---|
DE920923C true DE920923C (en) | 1954-12-02 |
Family
ID=7479896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES29752A Expired DE920923C (en) | 1952-08-13 | 1952-08-13 | Circuit arrangement for functional testing or operational readjustment of compensographs |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE920923C (en) |
-
1952
- 1952-08-13 DE DES29752A patent/DE920923C/en not_active Expired
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