GB1074539A - Apparatus in which a force is converted into a frequency, more especially for measurements of flow in a pipe - Google Patents

Apparatus in which a force is converted into a frequency, more especially for measurements of flow in a pipe

Info

Publication number
GB1074539A
GB1074539A GB4964363A GB4964363A GB1074539A GB 1074539 A GB1074539 A GB 1074539A GB 4964363 A GB4964363 A GB 4964363A GB 4964363 A GB4964363 A GB 4964363A GB 1074539 A GB1074539 A GB 1074539A
Authority
GB
United Kingdom
Prior art keywords
cord
lever
arm
frequency
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
GB4964363A
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.)
Samson Apparatebau AG
Original Assignee
Samson Apparatebau 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 Samson Apparatebau AG filed Critical Samson Apparatebau AG
Publication of GB1074539A publication Critical patent/GB1074539A/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
    • G01F1/50—Correcting or compensating means
    • 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
    • G01F1/38—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 a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
    • G01F1/383—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 a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule with electrical or electro-mechanical indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/10—Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1,074,539. Selective signalling. SAMSON APPARATEBAU A.G. Dec. 16, 1963 [Dec. 14, 1962], No. 49643/63. Heading G4H. [Also in Division G1] Vibrations in a member such as a cord 4 (Fig. 1) attached to a lever 3 are induced by an electromagnet 8 and detected by an inductive or capacitive transducer 6, both connected to an amplifier 7, at a frequency proportional to a force applied to the other end of the lever 3 in response to a variable quantity such as pressure, fluid flow, or temperature. The frequency of pulses supplied to the electromagnet 8 is measured to give rate of flow, or integrated at 9 to give an indication of total flow in response to the differential pressures from a Venturi, 1. Refinements include a weight (10, Fig. 2, not shown) mounted on the cord to reduce the frequency of vibration, or else on oscillatory mass 12 (Fig. 3, not shown) attached by a rigid arm 13 to the cord. Zero errors due to slackness of the cord at low tensions are removed by reinforcing parts of the cord (15a, Fig. 4, not shown) or by attaching a bias spring 15 to the oscillatory mass (Fig. 3, not shown). In a further flow measuring arrangement (Figs. 6, 7, not shown) compensation for variations in pressure or density is effected by means of a further pressure sensitive bellows (28), which varies either the position of the pivot (24) between the arm (27) and the oscillatory mass (26), or the separation of two portions (29, 30) of the oscillatory mass. The vibrating member consists of rigid portions linked to each other, to the lever (3), and to the arm (27), by strip springs (20, 21, 22). In a temperature measuring embodiment (Fig. 5, not shown) the vibrating member consists of two rigid parts (16, 17) pivoted together and to the arm (13), the lever (3) being subjected to a force from an expansion thermometer (19).
GB4964363A 1962-12-14 1963-12-16 Apparatus in which a force is converted into a frequency, more especially for measurements of flow in a pipe Expired GB1074539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0082883 1962-12-14

Publications (1)

Publication Number Publication Date
GB1074539A true GB1074539A (en) 1967-07-05

Family

ID=7510675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4964363A Expired GB1074539A (en) 1962-12-14 1963-12-16 Apparatus in which a force is converted into a frequency, more especially for measurements of flow in a pipe

Country Status (3)

Country Link
CH (1) CH427345A (en)
DE (1) DE1473175B2 (en)
GB (1) GB1074539A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471660A (en) * 1982-02-26 1984-09-18 The Foxboro Company Process control instrument using a pneumatically driven resonant element

Also Published As

Publication number Publication date
CH427345A (en) 1966-12-31
DE1473175B2 (en) 1972-02-10
DE1473175A1 (en) 1969-04-17

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