CA2205309A1 - A technique for substantially eliminating temperature induced measurement errors from a coriolis meter - Google Patents
A technique for substantially eliminating temperature induced measurement errors from a coriolis meterInfo
- Publication number
- CA2205309A1 CA2205309A1 CA 2205309 CA2205309A CA2205309A1 CA 2205309 A1 CA2205309 A1 CA 2205309A1 CA 2205309 CA2205309 CA 2205309 CA 2205309 A CA2205309 A CA 2205309A CA 2205309 A1 CA2205309 A1 CA 2205309A1
- Authority
- CA
- Canada
- Prior art keywords
- meter
- temperature induced
- pairs
- pair
- internal phase
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
Landscapes
- Measuring Volume Flow (AREA)
Abstract
Apparatus and accompanying methods for inclusion in a Coriolis meter that substantially eliminate temperature induced measurement errors which might otherwise be produced by performance differences existing between the separate input channels contained in the meter.
Specifically, two pairs of input channels are used in the meter. In operation, the meter repetitively measures the internal phase delay of each of these pairs and then subtracts the delay associated with each pair from actual flow based measurement data subsequently obtained therefrom. While one channel pair is measuring actual flow, the other channel pair is measuring its internal phase delay, with the channels being continuously cycled between these functions. Because both channel pairs are cycled at a sufficiently rapid rate, the current value of the internal phase delay for each of the pairs accurately reflects any temperature induced changes then occurring in the performance of that pair thereby eliminating substantially all temperature induced error components from the flow measurements subsequently obtained therefrom. In addition, the meter measures flow tube temperature in a manner that removes temperature induced errors therefrom.
Specifically, two pairs of input channels are used in the meter. In operation, the meter repetitively measures the internal phase delay of each of these pairs and then subtracts the delay associated with each pair from actual flow based measurement data subsequently obtained therefrom. While one channel pair is measuring actual flow, the other channel pair is measuring its internal phase delay, with the channels being continuously cycled between these functions. Because both channel pairs are cycled at a sufficiently rapid rate, the current value of the internal phase delay for each of the pairs accurately reflects any temperature induced changes then occurring in the performance of that pair thereby eliminating substantially all temperature induced error components from the flow measurements subsequently obtained therefrom. In addition, the meter measures flow tube temperature in a manner that removes temperature induced errors therefrom.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US728,546 | 1991-07-11 | ||
| US07/728,546 US5231884A (en) | 1991-07-11 | 1991-07-11 | Technique for substantially eliminating temperature induced measurement errors from a coriolis meter |
| CA002113165A CA2113165C (en) | 1991-07-11 | 1992-07-02 | A technique for substantially eliminating temperature induced measurement errors from a coriolis meter |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002113165A Division CA2113165C (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 |
|---|---|
| CA2205309A1 true CA2205309A1 (en) | 1993-01-21 |
| CA2205309C CA2205309C (en) | 2000-02-29 |
Family
ID=29421069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002205309A Expired - Lifetime CA2205309C (en) | 1991-07-11 | 1992-07-02 | A technique for substantially eliminating temperature induced measurement errors from a coriolis meter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2205309C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113645371A (en) * | 2021-06-08 | 2021-11-12 | 天津大学 | Device and method for eliminating noise of fixed-phase mode in row direction of time-of-flight sensor |
-
1992
- 1992-07-02 CA CA002205309A patent/CA2205309C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113645371A (en) * | 2021-06-08 | 2021-11-12 | 天津大学 | Device and method for eliminating noise of fixed-phase mode in row direction of time-of-flight sensor |
| CN113645371B (en) * | 2021-06-08 | 2023-10-17 | 天津大学 | Device and method for eliminating phase fixed mode noise in line direction of flight time sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2205309C (en) | 2000-02-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |