VDI/VDE 2040 Blatt 5:1989-03
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Calculation principles for the measurement of fluid flow using orifice plates, nozzles and venturi tubes; uncertainties
Hardcopy , PDF
14-04-2022
English, German - English
01-03-1989
Vorbemerkung
1 Zweck und Geltungsbereich
2 Formelzeichen und Einheiten
3 Allgemeines zur Messunsicherheit
3.1 Definition der Messunsicherheit
3.2 Zufällige Komponente der Messunsicherheit
3.3 Systematische Komponente der Messunsicherheit
3.4 Rechnerische Ermittlung der Unsicherheit aus
der Fehlergrenze eines MeBgerätes
3.5 Unsicherheit bei der Kalibrierung eines Messgerätes
3.6 Addition von Unsicherheiten
4 Unsicherheiten der Grössen delta[p], rho[1], D und d
4.1 Unsicherheit e[delta[p]] des Wirkdrucks delta[p]
4.2 Unsicherheit e[rho[1]] der Dichte rho[1]
4.3 Unsicherheit e[D] des Rohrdurchmessers D und
Unsicherheit e[d] des Durchmessers d der Drosselöffnung
5 Gesamtmessunsicherheit einer Durchfluss-Messeinrichtung
ohne Rechner bei zeitlich konstanter Strömung
5.1 Allgemeine Gleichung für die Gesamtmessunsicherheit
5.2 Gleichungen für die Gesamtmessunsicherheit spezieller
Messeinrichtungen
6 Gesamtmessunsicherheit einer Durchfluss-Messeinrichtung
mit Rechner bei zeitlich konstanter oder langsam
veränderlicher Strömung
6.1 Berechnung mit Berücksichtigung der Änderungen des
Durchflusskoeffizienten C und der Expansionszahl
epsilon
6.2 Berechnung ohne Berücksichtigung der Änderungen des
Durchflusskoeffizienten C und der Expansionszahl
epsilon
7 Gesamtmessunsicherheit einer Messung mit mehreren
Durchfluss-Messeinrichtungen
7.1 Drosselgeräte in Reihenschaltung
7.2 Drosselgeräte in Parallelschaltung
7.3 Kombination von Reihen- und Parallelschaltungen
Schrifttum
Gives provisions for the calculation of the overall uncertainty e[q] of a complete flow measuring device, including the primary device and associated secondary devices, from the uncertainties of the measured, calculated or tabulated values of the individual quantities.
DocumentType |
Standard
|
Pages |
24
|
PublisherName |
Verlag des Vereins Deutscher Ingenieure
|
Status |
Withdrawn
|
Supersedes |
VDI/VDE 2640 Blatt 3:1983-11 | Measurement of gas flow in circular; annular or rectangular sections of conduits velocity area method |
VDI/VDE 2644:2001-09 | Selection and applicability of flowmeters |
VDI 3986:2014-07 | Determination of efficiencies of conventional power stations |
VDI 2044:2002-11 | Acceptance and performance tests on fans (VDI code of practice for fans) |
VDI/VDE 2041:1991-04 | Measurement of fluid flow with primary devices; orifice plates and nozzles for special applications |
VDI/VDE 2176 Blatt 1:1971-02 | Fluidic characteristic quantities of throttle valves and their determination |
DIN 19214-4:1985-07 | FLOW MEASUREMENT - DIFFERENTIAL PRESSURE DEVICES WITH ORIFICE FLANGES - METER RUNS, NOMINAL DIAMETER 10 TO 200 |
VDI/VDE 2620-1 : 1973 | PROPAGATION OF LIMITED ERRORS IN MEASURING PRINCIPLES |
VDI/VDE 2600 Blatt 5:1973-11 | Terms of defining the mode of operation of measuring equipment |
VDI/VDE 3512 Blatt 1:2017-03 | Temperature measurement for building automation - Basic principles |
VDI/VDE 2041:1991-04 | Measurement of fluid flow with primary devices; orifice plates and nozzles for special applications |
ISO 7066-2:1988 | Assessment of uncertainty in the calibration and use of flow measurement devices — Part 2: Non-linear calibration relationships |
ISO 5168:2005 | Measurement of fluid flow — Procedures for the evaluation of uncertainties |
DIN IEC 60770:1986-03 | METHODS OF EVALUATING THE PERFORMANCE OF TRANSMITTERS FOR USE IN INDUSTRIAL PROCESS CONTROL SYSTEMS |
DIN 1952:1982-07 | MEASUREMENT OF FLUID FLOW BY MEANS OF ORIFICE PLATES, NOZZLES AND VENTURI TUBES INSERTED IN CIRCULAR CROSS SECTION CONDUITS RUNNING FULL (VDI RULES FOR MEASUREMENT OF FLUID) |
VDI/VDE 2600 Blatt 3:1973-11 | Terms relating to instrument technology |
VDI/VDE 2600 Blatt 2:1973-11 | Fundamental terms |
VDI/VDE 2600 Blatt 6:1973-11 | Designation of measuring equipment |
VDI/VDE 2600 Blatt 1:2013-10 | Inspection process management - Identification, classification and proof of suitability for inspection processes |
VDI/VDE 2600 Blatt 4:1973-11 | Terms describing the characterstics of measuring equipment |
ISO/TR 7066-1:1997 | Assessment of uncertainty in calibration and use of flow measurement devices — Part 1: Linear calibration relationships |
VDI/VDE 2620 Blatt 2:1974-07 | Propagation of error limits in measurements; examples on the propagation of errors and error limits |
VDE/VDI 3512-2 : 1972 | MEASURING ARRANGEMENTS FOR TEMPERATURE MEASUREMENTS |
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