GB1342444A - Apparatus for providing signals corresponding to passage of a column of a liquid - Google Patents
Apparatus for providing signals corresponding to passage of a column of a liquidInfo
- Publication number
- GB1342444A GB1342444A GB1342444DA GB1342444A GB 1342444 A GB1342444 A GB 1342444A GB 1342444D A GB1342444D A GB 1342444DA GB 1342444 A GB1342444 A GB 1342444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scr
- pulse
- input
- trigger
- relay
- 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
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
1342444 Pulse circuits; time delay circuits TEXACO DEVELOPMENT CORP 8 March 1972 10687/72 Heading H3T [Also in Division G1] Viscosity measuring apparatus supplies two spaced signals the spacing being representative of a time of passage. Detectors 18, 19 are connected to respective amplifiers 22, 23, and trigger circuits 24, 25 for controlling logic circuit 28, the state of which is indicated by lamps 29, 30. The logic circuit controls relay driver 33 and thence relay 34, which provides timed input signals to computer input 37. Detector amplifiers.-Each detector 18, 19 is a photocell 45, Fig. 2, connected to an FET phase splitter 41 feeding emitter follows 56, 57 provided with a diode OR-gate 76, 77 to pass positive going signals to output 82. Logic circuit 28, Fig. 3.-This circuit is actuated first only by trigger 24 (on input 85) to produce a first pulse at output 118, and subsequently to respond only to an output from trigger 25 (on input 86), producing a second pulse at 118, after which subsequent trigger pulses at 85, 86 have no effect until the circuit has been reset by switch 110. On receipt of the first trigger input at 85, SCR 92 (in reset condition being off) is switched on (lamp 96 being illuminated thereby). This results in SCR 100 (in reset condition being off) being switched on, a negative pulse via capacitor 107 causing SCR 106 (in reset condition being on) to be switched off. A positive pulse results through capacitor 115 and diode OR circuit 119, 120 to apply a signal to the relay drive on 118. The subsequent trigger pulse on input 86 results in switching on of SCR 106 and switching off of SCR 100 (via capacitor 107). A resultant positive pulse passes via 127 and OR gate to the relay driver. Before initiating a subsequent measurement sequence, the circuit is reset by 110. Relay driver, 33, Fig. 4.-Signals on 138 switch on SCR 141 which switches off SCR 142 and energizes relay 149 to close contact 150. After a delay timed by 155, 158, unijunction 145 actuates SCR 142, to turn off SCR 141 and terminate energization of relay 149.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1068772 | 1972-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1342444A true GB1342444A (en) | 1974-01-03 |
Family
ID=9972440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1342444D Expired GB1342444A (en) | 1972-03-08 | 1972-03-08 | Apparatus for providing signals corresponding to passage of a column of a liquid |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1342444A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450722A (en) * | 1982-07-26 | 1984-05-29 | The Babcock & Wilcox Company | Water level gauge with fault detector |
GB2172702A (en) * | 1985-03-22 | 1986-09-24 | Analysts Inc | Capillary tube viscometer with photo electric sensing |
US5074658A (en) * | 1989-07-31 | 1991-12-24 | Syracuse University | Laser capillary spectrophotometric acquisition of bivariate drop size and concentration data for liquid-liquid dispersion |
-
1972
- 1972-03-08 GB GB1342444D patent/GB1342444A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450722A (en) * | 1982-07-26 | 1984-05-29 | The Babcock & Wilcox Company | Water level gauge with fault detector |
GB2172702A (en) * | 1985-03-22 | 1986-09-24 | Analysts Inc | Capillary tube viscometer with photo electric sensing |
GB2172702B (en) * | 1985-03-22 | 1989-06-28 | Analysts Inc | Timer trigger for capillary tube viscometer and method of measuring oil properties |
US5074658A (en) * | 1989-07-31 | 1991-12-24 | Syracuse University | Laser capillary spectrophotometric acquisition of bivariate drop size and concentration data for liquid-liquid dispersion |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1442040A (en) | Predictive control process and system | |
GB1380343A (en) | Coating apparatus control | |
SE7510627L (en) | ANTILASE CONTROLLER | |
GB1387856A (en) | Remotely controlled lighting system | |
GB1378069A (en) | Method of and apparatus for automatically controlling movement of film strips | |
NL157437B (en) | A DEVICE FOR PROVIDING AN OUTPUT CONTROL SIGNAL WHEN AN INPUT SIGNAL CHANGES WITH A SPEED LARGER THAN A PRESET SPEED. | |
ES373924A1 (en) | Wheel slip detection device | |
GB1487188A (en) | Semiconductor signal switching apparatus | |
GB1342444A (en) | Apparatus for providing signals corresponding to passage of a column of a liquid | |
GB1041682A (en) | Traffic light control system | |
GB1526314A (en) | Chromatograph apparatus | |
GB1269910A (en) | An arrangement for controlling the supply of flushing water in sanitary apparatus | |
JPS5518752A (en) | Sequential controller | |
JPS5541582A (en) | Speed servo control system | |
GB1290576A (en) | ||
ES344602A1 (en) | Multipulse detector for harmonically related signals | |
CA1012226A (en) | Speed responsive timing circuit for vehicle light operation | |
GB1451661A (en) | Control of sewage treatment | |
GB1361597A (en) | Method and device for controlling the speed of a member | |
JPS545337A (en) | Semiconductor circuit | |
JPS6488900A (en) | Device for guiding airplane | |
JPS525256A (en) | High speed logic block | |
GB988762A (en) | Improvements in or relating to warning apparatus | |
SU548860A1 (en) | Device for controlling discrete blocks | |
GB1313940A (en) | Flame detector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |