DE69033966T2 - Sender - Google Patents
SenderInfo
- Publication number
- DE69033966T2 DE69033966T2 DE69033966T DE69033966T DE69033966T2 DE 69033966 T2 DE69033966 T2 DE 69033966T2 DE 69033966 T DE69033966 T DE 69033966T DE 69033966 T DE69033966 T DE 69033966T DE 69033966 T2 DE69033966 T2 DE 69033966T2
- Authority
- DE
- Germany
- Prior art keywords
- channel
- 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 - Lifetime
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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
- G01F1/60—Circuits therefor
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/409,935 US5079957A (en) | 1989-09-20 | 1989-09-20 | Conversion circuit for an electromagnetic flow transmitter |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69033966D1 DE69033966D1 (de) | 2002-07-04 |
DE69033966T2 true DE69033966T2 (de) | 2002-12-05 |
Family
ID=23622560
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69027859T Expired - Fee Related DE69027859T2 (de) | 1989-09-20 | 1990-09-13 | Umsetzschaltung für die übertragung elektromagnetischen flusses |
DE69033966T Expired - Lifetime DE69033966T2 (de) | 1989-09-20 | 1990-09-13 | Sender |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69027859T Expired - Fee Related DE69027859T2 (de) | 1989-09-20 | 1990-09-13 | Umsetzschaltung für die übertragung elektromagnetischen flusses |
Country Status (6)
Country | Link |
---|---|
US (1) | US5079957A (de) |
EP (2) | EP0711979B1 (de) |
JP (1) | JP2802545B2 (de) |
CA (1) | CA2066571C (de) |
DE (2) | DE69027859T2 (de) |
WO (1) | WO1991004463A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5436824A (en) * | 1992-12-10 | 1995-07-25 | Rosemount Inc. | Inrush current limiter in a magnetic flowmeter |
US5372045A (en) * | 1993-02-12 | 1994-12-13 | Rosemount Inc. | Bridge pulse controlled constant current driver for magnetic flowmeter |
ES2105945B1 (es) * | 1994-10-26 | 1998-05-01 | Hortsmann Largacha Peter | Circuitos de control de un caudalimetro electromagnetico. |
US5907103A (en) * | 1996-06-20 | 1999-05-25 | Endress + Hauser Flowtec Ag | Instrumentation amplifier arrangements of electromagnetic flowmeters |
GB2332527B (en) * | 1997-12-19 | 2002-10-30 | Abb Kent Taylor Ltd | Electromagnetic flowmeter |
DE19938160C2 (de) * | 1999-08-16 | 2003-11-20 | Krohne Messtechnik Kg | Magnetisch-induktives Durchflußmeßverfahren und Durchflußmeßgerät |
EP1363108B1 (de) * | 2002-05-14 | 2014-04-02 | Krohne Messtechnik Gmbh & Co. Kg | Verfahren zur Bestimmung der Unsicherheit eines magnetisch-induktiven Durchflussmessers |
US7779702B2 (en) * | 2008-11-03 | 2010-08-24 | Rosemount Inc. | Flow disturbance compensation for magnetic flowmeter |
US8779777B2 (en) * | 2010-06-04 | 2014-07-15 | Linear Technology Corporation | Dynamic compensation of aging drift in current sense resistor |
US10663331B2 (en) * | 2013-09-26 | 2020-05-26 | Rosemount Inc. | Magnetic flowmeter with power limit and over-current detection |
JP6183309B2 (ja) * | 2014-07-11 | 2017-08-23 | 横河電機株式会社 | 流量計及び絶縁劣化診断システム |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3783687A (en) * | 1972-05-26 | 1974-01-08 | Fischer & Porter Co | Electromagnetic flowmeter with square-wave excitation |
US4306461A (en) * | 1979-10-09 | 1981-12-22 | Emerson Electric Co. | Meter incorporating a digital fullscale setting device |
US4309909A (en) * | 1979-10-09 | 1982-01-12 | Emerson Electric Co. | Crystal stabilized voltage to frequency converter with digital calibration for flowmeters |
US4303980A (en) * | 1979-12-03 | 1981-12-01 | Fischer & Porter Company | Electromagnetic flowmeter system having automatically adjusted response characteristics |
US4339958A (en) * | 1980-02-21 | 1982-07-20 | Fischer & Porter Co. | Analog-to-digital converter for electromagnetic flowmeter |
JPS56148015A (en) * | 1980-04-18 | 1981-11-17 | Yokogawa Hokushin Electric Corp | Electromagnetic flowmeter |
US4417479A (en) * | 1981-09-01 | 1983-11-29 | Fischer & Porter Company | Electromagnetic flowmeter system having a feedback loop |
JPS58113816A (ja) | 1981-12-28 | 1983-07-06 | Shimadzu Corp | 電磁流量計 |
US4598251A (en) * | 1982-06-16 | 1986-07-01 | Rosemount Inc. | Frequency to current converter circuit |
US4562547A (en) * | 1983-03-28 | 1985-12-31 | Fischer & Porter Company | Computer data bus compatible current and frequency output system |
US4672331A (en) * | 1983-06-21 | 1987-06-09 | Cushing Vincent J | Signal conditioner for electromagnetic flowmeter |
US4766770A (en) * | 1984-03-30 | 1988-08-30 | Fischer & Porter Company | Low duty cycle electromagnetic flowmeter |
JPS6166123A (ja) * | 1984-09-07 | 1986-04-04 | Toshiba Corp | 電磁流量計変換器 |
US4680973A (en) * | 1984-10-25 | 1987-07-21 | Yokogawa Hokushin Electric Corporation | Electromagnetic flow meter converter |
GB2183343B (en) * | 1985-11-25 | 1989-11-01 | Danfoss As | Electromagnetic flowmeters |
-
1989
- 1989-09-20 US US07/409,935 patent/US5079957A/en not_active Expired - Lifetime
-
1990
- 1990-09-13 WO PCT/US1990/005188 patent/WO1991004463A1/en active IP Right Grant
- 1990-09-13 CA CA002066571A patent/CA2066571C/en not_active Expired - Fee Related
- 1990-09-13 DE DE69027859T patent/DE69027859T2/de not_active Expired - Fee Related
- 1990-09-13 JP JP2513759A patent/JP2802545B2/ja not_active Expired - Lifetime
- 1990-09-13 EP EP95203429A patent/EP0711979B1/de not_active Expired - Lifetime
- 1990-09-13 EP EP90914842A patent/EP0491852B1/de not_active Expired - Lifetime
- 1990-09-13 DE DE69033966T patent/DE69033966T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2802545B2 (ja) | 1998-09-24 |
DE69033966D1 (de) | 2002-07-04 |
DE69027859T2 (de) | 1996-12-12 |
EP0711979A3 (de) | 1997-08-20 |
EP0491852B1 (de) | 1996-07-17 |
EP0491852A4 (en) | 1993-03-17 |
EP0491852A1 (de) | 1992-07-01 |
US5079957A (en) | 1992-01-14 |
CA2066571C (en) | 2000-11-28 |
DE69027859D1 (de) | 1996-08-22 |
WO1991004463A1 (en) | 1991-04-04 |
EP0711979B1 (de) | 2002-05-29 |
JPH05500566A (ja) | 1993-02-04 |
EP0711979A2 (de) | 1996-05-15 |
CA2066571A1 (en) | 1991-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |