SE7610151L - ELECTRONIC MEASUREMENT METER - Google Patents

ELECTRONIC MEASUREMENT METER

Info

Publication number
SE7610151L
SE7610151L SE7610151A SE7610151A SE7610151L SE 7610151 L SE7610151 L SE 7610151L SE 7610151 A SE7610151 A SE 7610151A SE 7610151 A SE7610151 A SE 7610151A SE 7610151 L SE7610151 L SE 7610151L
Authority
SE
Sweden
Prior art keywords
pressure
transducer
flow
proportional
temperature
Prior art date
Application number
SE7610151A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
K Buchele
Original Assignee
Karlsruhe Augsburg Iweka
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 Karlsruhe Augsburg Iweka filed Critical Karlsruhe Augsburg Iweka
Publication of SE7610151L publication Critical patent/SE7610151L/en

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
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/46—Pitot tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
    • G01K17/12—Indicating product of flow and temperature difference directly or temperature
    • G01K17/16—Indicating product of flow and temperature difference directly or temperature using electrical or magnetic means for both measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
    • G01K17/12—Indicating product of flow and temperature difference directly or temperature
    • G01K17/18—Indicating product of flow and temperature difference directly or temperature using electrical or magnetic means for one measurement and mechanical means for the other

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Volume Flow (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

A pressure probe (2) is used to measure the ram pressure prevailing in a flow, which is proportional, via a square-root extractor element, to the flow velocity, which is proportional, in turn, to the rate of flow. Two temperature sensors in the feed and return of a heating system measure the cooling of the medium. If the rate of flow is multiplied by the temperature difference, a value is yielded which is proportional to the quantity of heat. The ram pressure is converted into an electrical signal in a pressure transducer (4). This transducer (4) is, for example, unstable with respect to temperature changes or changes in the static pressure, i.e. in the cases mentioned measurement errors arise. In order to exclude these, the transducer (4) is regularly restabilised by means of the so-called zero adjustment, in which a new zero point is established. In order to carry out the zero adjustment, the solenoid valve (5) is used to produce equality of pressure at the diaphragm of the pressure transducer (4). In this heat flow meter, the influence of temperature, fluctuations in the static pressure and ageing at the pressure transducer are excluded, and the endurance properties of the measuring system are thereby improved. <IMAGE>
SE7610151A 1975-09-20 1976-09-14 ELECTRONIC MEASUREMENT METER SE7610151L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752542025 DE2542025C3 (en) 1975-09-20 1975-09-20 Electronic heat meter

Publications (1)

Publication Number Publication Date
SE7610151L true SE7610151L (en) 1977-03-21

Family

ID=5957002

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7610151A SE7610151L (en) 1975-09-20 1976-09-14 ELECTRONIC MEASUREMENT METER

Country Status (10)

Country Link
AT (1) ATA686176A (en)
BE (1) BE845894A (en)
CH (1) CH627273A5 (en)
DE (1) DE2542025C3 (en)
DK (1) DK420176A (en)
FR (1) FR2325029A1 (en)
GB (1) GB1558884A (en)
IT (1) IT1073308B (en)
NL (1) NL7610331A (en)
SE (1) SE7610151L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208511A1 (en) * 1982-03-09 1983-09-22 Siemens AG, 1000 Berlin und 8000 München HEAT METER
DE4408421C2 (en) * 1994-03-12 1996-01-11 Iwk Regler Kompensatoren Method and device for differential pressure measurement with periodic zero adjustment
GB2291506B (en) * 1994-07-22 1998-08-19 British Gas Plc Apparatus for measuring the flow rate of a fluid
DE102013114495A1 (en) * 2013-12-19 2015-06-25 S.K.I. GmbH Method and measuring arrangement according to the differential pressure principle with zero point adjustment
CN105004450A (en) * 2015-08-03 2015-10-28 浙江华德利纺织印染有限公司 Heat measuring method and apparatus of conduction oil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR545418A (en) * 1921-12-30 1922-10-11 Heat meter
DE547142C (en) * 1926-06-24 1932-03-23 Siemens & Halske Akt Ges Heat meter with thermocouples in flow and return and flow meter in the form of a differential pressure meter
US2804773A (en) * 1955-09-19 1957-09-03 Henze Instr And Valve Inc Temperature sensing devices
FR1247036A (en) * 1959-01-09 1960-11-25 Askania Werke Ag Device for measuring quantities of heat
FR2157099A5 (en) * 1971-10-18 1973-06-01 Schlumberger Compteurs
DE2320359A1 (en) * 1973-04-21 1974-11-07 Nortron Hermann Koehler Elektr HEAT COUNTER
FR2305807A1 (en) * 1975-03-27 1976-10-22 Fisch Raymond Electronic system for measuring calorific losses - using signal representing fluid temp. difference

Also Published As

Publication number Publication date
GB1558884A (en) 1980-01-09
IT1073308B (en) 1985-04-17
DE2542025A1 (en) 1976-10-07
BE845894A (en) 1976-12-31
NL7610331A (en) 1977-03-22
DE2542025B2 (en) 1980-08-07
DK420176A (en) 1977-03-21
ATA686176A (en) 1986-08-15
DE2542025C3 (en) 1981-03-12
FR2325029A1 (en) 1977-04-15
CH627273A5 (en) 1981-12-31
FR2325029B1 (en) 1982-10-22

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