RU94012550A - DEVICE CORIOLIS (OPTIONS) AND METHOD FOR MEASURING THE SPECIFIC EXPENSE OF TECHNOLOGICAL FLUID THROUGH IT, THE SCHEME AND METHOD FOR MEASURING THE FIRST AND SECOND OUTPUT SIGNALS WITH ITS USE - Google Patents

DEVICE CORIOLIS (OPTIONS) AND METHOD FOR MEASURING THE SPECIFIC EXPENSE OF TECHNOLOGICAL FLUID THROUGH IT, THE SCHEME AND METHOD FOR MEASURING THE FIRST AND SECOND OUTPUT SIGNALS WITH ITS USE

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Publication number
RU94012550A
RU94012550A RU94012550/28A RU94012550A RU94012550A RU 94012550 A RU94012550 A RU 94012550A RU 94012550/28 A RU94012550/28 A RU 94012550/28A RU 94012550 A RU94012550 A RU 94012550A RU 94012550 A RU94012550 A RU 94012550A
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RU
Russia
Prior art keywords
channel pair
measuring
measurement results
temperature fluctuations
channel
Prior art date
Application number
RU94012550/28A
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Russian (ru)
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RU2100781C1 (en
Inventor
Дж. Золок Майкл
Original Assignee
Микро Моушн, Инк.
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
Priority claimed from US07/728,546 external-priority patent/US5231884A/en
Application filed by Микро Моушн, Инк. filed Critical Микро Моушн, Инк.
Publication of RU94012550A publication Critical patent/RU94012550A/en
Application granted granted Critical
Publication of RU2100781C1 publication Critical patent/RU2100781C1/en

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Claims (1)

Предложены устройство и способ для использования в измерительном приборе Кориолиса, которые практически полностью устраняют возникающие в результате колебания температуры погрешности измерений, которые в противном случае могут образовываться различиями в рабочей характеристике между индивидуальными входными каналами, которые используются в этом измерительном приборе. В данном случае в измерительном приборе используются две пары входных каналов. В процессе использования этот прибор будет повторно измерять внутреннюю фазовую задержку каждой канальной пары, а затем вычитать связанную с каждой канальной парой задержку из основанных на фактическом потоке жидкости результатов измерения. В то время, как одна канальная пара измеряет фактический поток жидкости, другая канальная пара будет измерять свою внутреннюю фазовую задержку, при этом канальные пары будут постоянно чередовать свои функции, образуя соответствующий циклический режим работы. Поскольку обе канальные пары работают в циклическом режиме с довольно высокой скоростью, то текущее значение внутренней фазовой задержки для каждой канальной пары будет довольно точно отражать любые вызываемые колебанием температуры изменения, которые затем могут происходить в рабочей характеристике канальной пары, благодаря чему практически полностью устраняются все вызываемые колебаниями температуры компоненты ошибки из результатов измерения потока, которые выдает эта канальная пара. Кроме того, предлагаемый прибор измеряет температуру трубки Вентури таким образом, который удаляет из результатов измерений практически все связанные с колебанием температуры ошибки. Более того, прибор также измеряет и обновляет свое значение отметки механического нуля, используя для этого лишь результаты измерения значения Δt нулевого потока, а сами результаты имеют достаточно низкое содержание помех, затем это значение отметки механического нуля вычитают из основанных на потоке жидкости результатов измерения, чтобы устранить все содержащиеся в результатах погрешности, которые в противном случае могут иметь место.A device and method are proposed for use in a Coriolis measuring instrument that almost completely eliminates measurement errors resulting from temperature fluctuations that could otherwise be formed by differences in performance between the individual input channels used in this measuring instrument. In this case, the measuring device uses two pairs of input channels. During use, this instrument will re-measure the internal phase delay of each channel pair, and then subtract the delay associated with each channel pair from the measurement results based on the actual fluid flow. While one channel pair measures the actual fluid flow, another channel pair will measure its internal phase delay, while the channel pairs will constantly alternate their functions, forming the corresponding cyclic mode of operation. Since both channel pairs operate in a cyclical mode with a fairly high speed, the current value of the internal phase delay for each channel pair will fairly accurately reflect any changes caused by temperature fluctuations that can then occur in the performance characteristics of the channel pair, thereby almost completely eliminating all caused temperature fluctuations of the error component from the flow measurement results that this channel pair produces. In addition, the proposed instrument measures the temperature of the Venturi tube in a way that removes from the measurement results almost all errors related to temperature fluctuations. Moreover, the device also measures and updates its value of the mechanical zero mark, using only the measurement results of the Δt value of the zero flow, and the results themselves have a fairly low noise content, then this value of the mechanical zero mark is subtracted from the flow-based measurement results to eliminate all errors in the results that may otherwise occur.
RU9494012550A 1991-07-11 1992-07-02 Caryolysis device (variants) and method of measurement of flow rate of process liquid passing through it; circuit and method of measurement of first and second output signals with its use RU2100781C1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/728,546 US5231884A (en) 1991-07-11 1991-07-11 Technique for substantially eliminating temperature induced measurement errors from a coriolis meter
US07/728546 1991-07-11
US07/728,546 1991-07-11
PCT/US1992/005584 WO1993001473A1 (en) 1991-07-11 1992-07-02 A technique for substantially eliminating temperature induced measurement errors from a coriolis meter

Publications (2)

Publication Number Publication Date
RU94012550A true RU94012550A (en) 1995-09-27
RU2100781C1 RU2100781C1 (en) 1997-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU9494012550A RU2100781C1 (en) 1991-07-11 1992-07-02 Caryolysis device (variants) and method of measurement of flow rate of process liquid passing through it; circuit and method of measurement of first and second output signals with its use

Country Status (21)

Country Link
US (2) US5231884A (en)
EP (1) EP0593623B1 (en)
JP (1) JP2583012B2 (en)
KR (1) KR0146686B1 (en)
CN (2) CN1045657C (en)
AT (1) ATE143726T1 (en)
AU (1) AU662546B2 (en)
BR (1) BR9206115A (en)
CA (1) CA2113165C (en)
CZ (1) CZ4594A3 (en)
DE (1) DE69214290T2 (en)
ES (1) ES2094917T3 (en)
HU (1) HU216208B (en)
MD (1) MD960379A (en)
MX (1) MX9204044A (en)
MY (1) MY110166A (en)
PL (1) PL170494B1 (en)
RU (1) RU2100781C1 (en)
SK (1) SK2794A3 (en)
TJ (1) TJ235B (en)
WO (1) WO1993001473A1 (en)

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