DE437843C - Device for adjusting flow meters - Google Patents

Device for adjusting flow meters

Info

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
Application number
DEH104666D
Other languages
German (de)
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DEH104666D priority Critical patent/DE437843C/en
Application granted granted Critical
Publication of DE437843C publication Critical patent/DE437843C/en
Expired legal-status Critical Current

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

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)

PATF,NTANS2RÜGHI: i, Einrichtung zum Justieren von Strömutmessern, bei, denen das Meßorgan einem quadratischen Bewegungsgesetz , folgt und diese Bewegung durch ein einstellbares wurzelziehendes Organ auf einen Zeiger übertragen wird, dadurch gekennzeichnet, daß das Meßargan außer mit einer Marke (Mo) zur Nullprüfung noch mit einer anderen, einem bestimmten Skalenwerte, z. B. dem Skalenendwerte, entsprechenden Marke (M,) versehen ist, so daß beim Einspielen der zweiten Marke der Zeiger (Z) sich auf den zugehörigen Skalenwert rücken läßt, wodurch von selbst die richtige Justierung des Apparates auch für die Anfangsstellung gewährleistet ist. PATF, NTANS2RÜGHI: i, device for adjusting flow meters, where the measuring element follows a quadratic law of motion and this motion is transferred to a pointer by an adjustable root-pulling organ, characterized in that the measuring element except with a mark (Mo) for zero testing still with another, a certain scale value, e.g. B. the full scale value, corresponding mark (M,) is provided, so that when importing the second mark the pointer (Z) can be moved to the corresponding scale value, which automatically the correct adjustment of the apparatus is also guaranteed for the initial position is. 2. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß zur Bestätigung der Unversehrtheit des kinematischen Systems am Übertragungsmechanismus eine weitere Marke (X) vorgesehen ist, die nach der gemäß Anspruch i erfolgten Einstellung mit einer mit der Kurvenscheibe fest verbundenen, dem bestimmten Skalenwert (z. B. Skalenendwert) entsprechenden Marke (Y) übereinstimmen muß. 2. Device according to claim i, characterized in that to confirm the integrity of the kinematic system on the transmission mechanism, a further mark (X) is provided, which according to the setting made according to claim i with a firmly connected to the cam, the specific scale value (z B. Full scale value) must match the corresponding mark (Y).
DEH104666D 1925-12-10 1925-12-10 Device for adjusting flow meters Expired DE437843C (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594136A (en) * 1950-08-08 1952-04-22 Taylor Instrument Co Pressure operated indicating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
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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