CN2074905U - Circulation display device for ultrasonic wave flowmeter - Google Patents
Circulation display device for ultrasonic wave flowmeter Download PDFInfo
- Publication number
- CN2074905U CN2074905U CN 89211765 CN89211765U CN2074905U CN 2074905 U CN2074905 U CN 2074905U CN 89211765 CN89211765 CN 89211765 CN 89211765 U CN89211765 U CN 89211765U CN 2074905 U CN2074905 U CN 2074905U
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- China
- Prior art keywords
- output terminal
- sheffer stroke
- stroke gate
- diode
- input
- Prior art date
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Abstract
The utility model relates to a circulation display device for an ultrasonic wave flowmeter, composed of a receiving amplifier comparator, a reshaper, an initial trigger generator, a circulating indicator, and a display. The utility model is characterized in that if the position of an ultrasonic probe is correctly arranged, the display sends audible and visible alarm to inform an operator, and in reverse, no audible and visible alarm is output on the display. The utility model has the advantages of simple structure, convenient installation and carrying, easy adjustment, and visual and legible display. The utility model can be adopted by various ultrasonic flowmeters.
Description
The utility model relates to a kind of ultrasonic flow meter circulation indicating device.
As everyone knows, the present ultrasonic flow meter that generally uses owing to must determine the tram of ultrasonic probe when using by oscillograph and frequency meter, so that ultrasonic flow meter is operated in the stable circulation state, carries out flow measurement.Therefore, exist instrumental function single, carry inconvenience, install loaded down with trivial detailsly, measure to adjust weak points such as difficulty.
The purpose of this utility model is to provide a kind of ultrasonic flow meter circulation indicating device, determines function so that ultrasonic flow meter itself has both probe positions, thereby saves supplementary instrument, improves the ratio of performance to price of ultrasonic flow meter.
Principal feature of the present utility model is by setting up initial trigger pulse producer and the circulating indicator in ultrasonic flow meter, make operating personnel show situation according to the display on the circulation indicating device, at any time adjust and the tram of definite ultrasonic probe, allow ultrasonic flow meter be operated in the stable circulation state, and then guarantee the measuring accuracy of ultrasonic flow meter.
Below in conjunction with embodiment the utility model is described in detail:
Fig. 1 is an electrical schematic diagram of the present utility model
Referring to accompanying drawing, the utility model constitutes by receiving amplifier comparator 1, reshaper 2, initial trigger pulse producer 3, circulating indicator 4, display 5, in the described initial trigger pulse producer 3 or door A and or two input ends of door B be connected to a, C 2 points respectively; The input/output terminal of Sheffer stroke gate C respectively with or the door B output terminal and diode D
1Negative pole be connected; Diode D
1Positive pole, resistance R
1An end, voltage stabilizing diode DW
1Negative pole, capacitor C
1One be terminated at b point, resistance R
1The other end, voltage stabilizing diode DW
1Positive pole, capacitor C
1The other end respectively with the input end of power supply V end, Sheffer stroke gate D, hold and be connected; The input and output of monostable circuit E are connected with the C point with the output terminal of Sheffer stroke gate D respectively; The input/output terminal of Sheffer stroke gate F in the circulating indicator (4) respectively with C point and diode D
2Negative pole be connected; Diode D
2Positive pole, resistance R
2An end, voltage stabilizing diode DW
2Negative pole, capacitor C
2One be terminated at d point, resistance R
2The other end, voltage stabilizing diode DW
2Positive pole, capacitor C
2The other end respectively with the input end of power supply V end, Sheffer stroke gate G, hold and be connected; The input/output terminal of Sheffer stroke gate H is connected with the output terminal of Sheffer stroke gate G and the input end of display 5 respectively; Or the output terminal of door A is the output terminal of circulation indicating device.
Principle of work of the present utility model is described below: when ultrasonic flow meter is operated in not recurrent state, receive the output of amplifier comparator 1 no pulse, reshaper 2 output terminals are electronegative potential, simultaneously, monostable circuit E output terminal also is electronegative potential, cause or door A, B output terminal all are electronegative potential, Sheffer stroke gate C exports noble potential, diode D
1End, power supply V is through resistance R
1To capacitor C
1Charging.Work as capacitor C
1When both end voltage is charged to certain value, voltage stabilizing diode DW
1Conducting, Sheffer stroke gate D upset output negative pulse triggers monostable circuit E upset, the output positive pulse.This positive pulse both by or door A output as inceptive impulse, return again or door B, make the Sheffer stroke gate C output terminal that overturns rapidly become electronegative potential, capacitor C
1On electric charge by diode D
1Release initial trigger pulse producer reinstatement attitude.Above process moves in circles, and receives the normal signal pulse until receiving amplifier comparator 1, when reshaper 2 has positive pulse output till.When receiving amplifier comparator 1 and receive the normal signal pulse, trigger reshaper 2 upsets, the output positive pulse, simultaneously, or a door B also exports positive pulse, makes Sheffer stroke gate C output terminal be electronegative potential, diode D
1Conducting, voltage stabilizing diode DW
1End, Sheffer stroke gate D and monostable circuit E maintain the original state.The positive pulse of reshaper 2 outputs is promptly passed through or door A exports the transmitter that triggers in the ultrasonic flow meter.Receiving before amplifier comparator 1 receives next time signal pulse, power supply V passes through resistance R again
1To capacitor C
1Charging, but because capacitor C
1Be not charged to as yet and make voltage stabilizing diode DW
1During the voltage of conducting, the signal pulse that receives makes Sheffer stroke gate C upset again, and output terminal becomes low-voltage by noble potential, diode D
1Conducting is rapidly with capacitor C
1On charge discharging resisting fall, therefore, Sheffer stroke gate D and monostable circuit E remain previous status, the positive pulse of reshaper 2 output still by or door A output trigger transmitter.Said process goes round and begins again, and makes ultrasonic flow meter be operated in the stable circulation state.
In like manner, when circulating indicator 4 did not enter the periodic duty state at ultrasonic flow meter, the Sheffer stroke gate F output terminal in the circulating indicator 4 was electronegative potential, diode D
2Conducting causes capacitor C
2The undertension at two ends is so that voltage stabilizing diode DW
2Conducting, Sheffer stroke gate H output terminal is electronegative potential, and display 5 does not have demonstration; When ultrasonic flow meter was in recurrent state, Sheffer stroke gate F output terminal was noble potential, diode D
2End, power supply V passes through resistance R
2To capacitor C
2Charging makes voltage stabilizing diode DW
2Conducting, Sheffer stroke gate H output terminal is noble potential, and display 5 has demonstration, and the expression ultrasonic flow meter has been operated in normal recurrent state.
Described reshaper 2 can adopt monostable circuit; Display 5 can adopt the acousto-optic indicating circuit.
The utility model has been owing to taked abovementioned technology, thus have simple in structure, install easy to carryly, adjust easily, intuitive display understands etc. and can be advantage various types of ultrasonic flowmeter and to adopt.
Claims (2)
1, a kind of ultrasonic flow meter circulation indicating device, it is characterized in that it forms by receiving amplifier comparator (1), reshaper (2), initial trigger pulse producer (3), circulating indicator (4), display (5), in the described initial trigger pulse producer (3) or the door A and or the door B two input ends be connected to a, c 2 points respectively, the input/output terminal of Sheffer stroke gate C respectively with or the door B output terminal and diode D
1Negative pole be connected diode D
1Positive pole, resistance R
1An end, voltage stabilizing diode DW
1Negative pole, capacitor C
1One be terminated at b point, resistance R
1The other end, voltage stabilizing diode DW
1Positive pole, capacitor C
1The other end respectively with the input end of power supply V end, Sheffer stroke gate D, hold and be connected, the input/output terminal of monostable circuit E is connected with the C point with the output terminal of Sheffer stroke gate D respectively, the input/output terminal of the Sheffer stroke gate F in the circulating indicator (4) respectively with C point and diode D
2Negative pole be connected diode D
2Positive pole, resistance R
2An end, voltage stabilizing diode DW
2Negative pole, capacitor C
2One be terminated at d point, resistance R
2The other end, voltage stabilizing diode DW
2Positive pole, capacitor C
2The other end respectively with the input end of power supply V end, Sheffer stroke gate G, hold and be connected, the input/output terminal of Sheffer stroke gate H is connected with the output terminal of Sheffer stroke gate G and the input end of display (5) respectively.
2, circulation indicating device as claimed in claim 1 is characterized in that reshaper (2) adopts monostable circuit, and display (5) adopts the acousto-optic indicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89211765 CN2074905U (en) | 1989-10-31 | 1989-10-31 | Circulation display device for ultrasonic wave flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89211765 CN2074905U (en) | 1989-10-31 | 1989-10-31 | Circulation display device for ultrasonic wave flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2074905U true CN2074905U (en) | 1991-04-10 |
Family
ID=4868004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89211765 Withdrawn CN2074905U (en) | 1989-10-31 | 1989-10-31 | Circulation display device for ultrasonic wave flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2074905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383495C (en) * | 2002-12-16 | 2008-04-23 | 恩德斯+豪斯流量技术股份有限公司 | Device for positioning a clamp-on flowmeter on a container |
-
1989
- 1989-10-31 CN CN 89211765 patent/CN2074905U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383495C (en) * | 2002-12-16 | 2008-04-23 | 恩德斯+豪斯流量技术股份有限公司 | Device for positioning a clamp-on flowmeter on a container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Designer after: Tan Hengwen Designer before: Tan Dawen |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |