GB1149629A - Process and apparatus for the measurement and/or the control of a flow of matter from or into a vessel - Google Patents
Process and apparatus for the measurement and/or the control of a flow of matter from or into a vesselInfo
- Publication number
- GB1149629A GB1149629A GB30333/66A GB3033366A GB1149629A GB 1149629 A GB1149629 A GB 1149629A GB 30333/66 A GB30333/66 A GB 30333/66A GB 3033366 A GB3033366 A GB 3033366A GB 1149629 A GB1149629 A GB 1149629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- flow
- container
- switch
- valve
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
- G05D11/133—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action
- G05D11/134—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action by sensing the weight of the individual components
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
- Measurement Of Force In General (AREA)
Abstract
1,149,629. Measuring and controlling fluid flow. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. July 6, 1966 [July 8, 1965], No. 30333/66. Heading G1N. Flow of fluent matter from a container 1, Fig. 1 through a valve 7 is measured by comparing at 4 the output A of a transducer 3 responsive to pressure or weight of matter in the container, with a voltage B from a unit 5, any difference between them causing the output unit 5 to continuously increase in discrete steps until the said difference is zero. The frequency of the stepwise increase is proportional to rate of flow, and is measured at 6, this signal also being used to control the flow valve 7. A meter 8 indicates total flow. One of two containers (9, 9a, Fig..3 not shown) is connected to an outlet (2) by a selection valve (10), and to a weight-or pressure-measuring device (12) by a switch (11) the output of which feeds a valve or transistor amplifier (15) (corresponding to amplifier 4, Fig.1) via a resistor (19). The second input to amplifier (15) is via a resistor (20) from an amplifier (14) (forming part of unit 5 of Fig. 1), the input being equal to the voltage stored on a capacitor (16). When the output of amplifier (15) exceeds a threshold value set in a threshold device (21) a switch (22) operates intermittently to charge the capacitor (16) from an auxiliary capacitor (23), to remove the difference. The frequency of operation of the switch (21) is indicated (at 24), and may be integrated to show the amount of matter which has flowed, either by means of an electronic integrator, or with a pulse motor and stepping potentiometer. An analogue signal is produced (at 25) proportional to the frequency, and controls a flow valve (26). Changeover (at 10) of the outlet (2) to the second container (9a) automatically switches (at 11) the transducer (12) to the second container. Switchable resistors (29, 30) are provided across the amplifier (14) and storage capacitor (16) to set up the circuit at the beginning of an operation. The unit 25 may include a required load pre-set circuit Fig.4 (not shown) comprising a capacitor charging circuit similar to that associated with amplifier (14), the switch (33) being driven in synchronism with switch (22) and a reference voltage being supplied through an adjustable resistor (35). A mixture control arrangement Fig. 5 (not shown) employs a ratio controller (42) and two flow measuring arrangements, one or both of which may be as described. The weight of material in the container may be measured by a strain gauge load cell.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6508785A NL6508785A (en) | 1965-07-08 | 1965-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1149629A true GB1149629A (en) | 1969-04-23 |
Family
ID=19793596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30333/66A Expired GB1149629A (en) | 1965-07-08 | 1966-07-06 | Process and apparatus for the measurement and/or the control of a flow of matter from or into a vessel |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1573094A1 (en) |
GB (1) | GB1149629A (en) |
NL (1) | NL6508785A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3740603A1 (en) * | 1987-12-01 | 1989-06-15 | Eckardt Ag | Device for measuring the volume flow of a liquid flowing out of or into an open container |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4105857C2 (en) * | 1991-02-25 | 1994-07-07 | Claas Ohg | Device for measuring a mass flow |
DE59200669D1 (en) * | 1991-02-25 | 1994-12-01 | Claas Ohg | Device for measuring a mass flow with a measuring capacitor. |
-
1965
- 1965-07-08 NL NL6508785A patent/NL6508785A/xx unknown
-
1966
- 1966-07-06 DE DE19661573094 patent/DE1573094A1/en active Pending
- 1966-07-06 GB GB30333/66A patent/GB1149629A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3740603A1 (en) * | 1987-12-01 | 1989-06-15 | Eckardt Ag | Device for measuring the volume flow of a liquid flowing out of or into an open container |
Also Published As
Publication number | Publication date |
---|---|
DE1573094A1 (en) | 1970-10-29 |
NL6508785A (en) | 1967-01-09 |
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