DE437843C - Device for adjusting flow meters - Google Patents
Device for adjusting flow metersInfo
- Publication number
- DE437843C DE437843C DEH104666D DEH0104666D DE437843C DE 437843 C DE437843 C DE 437843C DE H104666 D DEH104666 D DE H104666D DE H0104666 D DEH0104666 D DE H0104666D DE 437843 C DE437843 C DE 437843C
- Authority
- DE
- Germany
- Prior art keywords
- mark
- scale value
- pointer
- flow meters
- adjusting flow
- 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
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/37—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes
- G01F1/377—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes using a ring-balance as indicating element
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Description
Einrichtung zum Justieren von Strömungsmessern. Es ist üblich, Geschwindigkeiten oder strömende Mengen mittels Stauvorrichtung oder Hakenrohres zu messen. Es ist bekannt, daß die Nulleinstellung und Nachjustierung, welche, wie bei jedem Meßinstrument, von Zeit zu Zeit zu prüfen und nachzuregeln erfoTderlich ist. Schwierigkeiten bereitet. Die, quadratische Beziehung zwischen Differenzdruck und Zeigerausschlag hat zur Folge, daß in der Nullnähe das Instrument unempfindlich wird, weil der Theorie nach eine unendlich kleine Kraft schon einen endlichen Zeigerweg hervorrufen soll.Device for adjusting flow meters. It is common to have speeds or to measure flowing quantities by means of a damming device or hook tube. It is known that the zero setting and readjustment, which, as with every measuring instrument, to be checked and readjusted from time to time. Causes difficulties. The quadratic relationship between differential pressure and pointer deflection has to The result is that the instrument becomes insensitive in the vicinity of zero, because according to the theory an infinitely small force is supposed to produce a finite pointer path.
Die Erfindung bezieht sich auf solche Geräte, bei welchen das eigentliche Meßorgan eine quadratische Bewegung vollführt, also dem Differenzdruck proportional geht, und erst diese Bewegung mit Hilfe von fTbertragungsorganen in die Wurzelwerte übergdieitet wird. ' Ein beliebiges Beispiel für eine solche Anordnung stellt Abb. i dar. Als Meßorgan dient die bekannte Ringwaage T, während die Kurvenscheibe-I( mit Hebeln R, H, L den wurzelziehenden Übertragungsmechanismus darstellt.The invention relates to devices in which the actual measuring element performs a quadratic movement, that is to say is proportional to the differential pressure, and only this movement is converted into the root values with the aid of transmission elements. Fig. 1 shows a random example of such an arrangement. The well-known ring balance T serves as the measuring element, while the cam disk-I (with levers R, H, L represents the root-pulling transmission mechanism.
Die Erfindung besteht darin, daß man zunächst die Trommel für sich auf richtige Nullstellung, gekennzeichnet durch eine Marke Mo und einen festen Weiser W, einreguliert. Das bietet ebensowenig Schwierigkeiten wie bei jedem Meßiiistrument mit linearer Charakteristik. Hat man Mo mit W in tJbereinstimmung gebracht, so schwingt man die Trommel von Hand in die Endstellung. Dazu dient eine Endmarke Me, welche mit W in übereinstimmung gebracht wird.The invention consists in that you first have the drum for yourself correct zero position, indicated by a mark Mo and a fixed indicator W, adjusted. This presents no more difficulties than with any measuring instrument with linear characteristics. If Mo has been brought into agreement with W, then oscillates the drum by hand in the end position. An end mark Me is used for this, which is brought into agreement with W.
Dagegen wird der übertragungsmechanismus nunmehr lediglich nach der Endstellung des Zeigers Z reguliert. Zu diesem Zweck wird die Kurvenscheibe I( in den Schlitzen S verschoben, bis der Zeiger auf den letzten Skalenstrich weist: Zur Bestätigung der Unversehrtheit :des .kinematischen Systems muß alsdann aüßerätn em am Rollenhebel.R angebrachte Marke X mit 4er Endmarke Y auf der Kurvenscheibe übereinstimmen.In contrast, the transmission mechanism is now only after the End position of the pointer Z regulated. For this purpose, the cam I (in the slots S shifted until the pointer is on the last mark on the scale points: To confirm the intactness: the .kinematic system must then Aüßerätn em on the roller lever.R affixed mark X with 4 end mark Y on the cam to match.
Damit ist der Apparat richtig justiert, unabhängig davon, ob er infolge mehr oder weniger auftretender Reibung a, dgl. die genaue Nullage einnimmt oder nicht.This means that the device is correctly adjusted, regardless of whether it is due to more or less occurring friction a, the like. The exact zero position assumes or not.
Statt der Endstellung kann auch eine beliebige Zwischenstellung zur Prüfung derquadratischen übertragung entsprechend markiert werden.Instead of the end position, any intermediate position can also be used Checking the square transmission must be marked accordingly.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH104666D DE437843C (en) | 1925-12-10 | 1925-12-10 | Device for adjusting flow meters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH104666D DE437843C (en) | 1925-12-10 | 1925-12-10 | Device for adjusting flow meters |
Publications (1)
Publication Number | Publication Date |
---|---|
DE437843C true DE437843C (en) | 1926-11-30 |
Family
ID=7169579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH104666D Expired DE437843C (en) | 1925-12-10 | 1925-12-10 | Device for adjusting flow meters |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE437843C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2594136A (en) * | 1950-08-08 | 1952-04-22 | Taylor Instrument Co | Pressure operated indicating apparatus |
-
1925
- 1925-12-10 DE DEH104666D patent/DE437843C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2594136A (en) * | 1950-08-08 | 1952-04-22 | Taylor Instrument Co | Pressure operated indicating apparatus |
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