CN2179973Y - Photoelectric instrument for investigating dew-point - Google Patents
Photoelectric instrument for investigating dew-point Download PDFInfo
- Publication number
- CN2179973Y CN2179973Y CN 93226643 CN93226643U CN2179973Y CN 2179973 Y CN2179973 Y CN 2179973Y CN 93226643 CN93226643 CN 93226643 CN 93226643 U CN93226643 U CN 93226643U CN 2179973 Y CN2179973 Y CN 2179973Y
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- China
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- dew
- photoelectric
- relay
- minute surface
- circuit
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Abstract
The utility model relates to a photoelectric instrument for investigating dew points, which comprises a photoelectric detection circuit, a heat electric pump, a condensing mirror face, a DC circuit, a platinum temperature sensor, a digital display circuit and a dew point measurement room. The utility model is characterized in that a relay and a two-bit on-off type controller mutually connected with the output end of the relay are arranged; the input end of the relay is mutually connected with the output end of the photoelectric detection circuit; the two-bit on-off type controller is also mutually connected with a digital converter in the digital display circuit. The heat electric pump is directly and mutually connected with a DC power supply.
Description
The utility model is about surveying instrument, particularly about measuring the instrument of water cut in the gas.
The dewpoint temperature of the content of water vapor and this gas has concrete dependence in the gas, just can draw the content of trace water in the gas by converting or tabling look-up as long as record the dewpoint temperature of this gas.Use the instrument of the content of water vapor in the said method measurement gas to be commonly referred to as dew-point hygrometer (claiming dew point hygrometer again).Because the condensation method that uses is different with detecting and control method, the accuracy in detection of various types of dew point hygrometers is also different.The photoelectric dew-point hygrometer of the growth and decline of wherein using the condensation minute surface, photoelectric device of thermoelectric pump (Peltier element) refrigeration to detect to reveal on the condensation minute surface and the platinum resistance temperature sensor of pin-point accuracy, the accuracy of its measurement is only second to the gravimetric method hygrometer of national standard, and will exceed an order of magnitude than the instrument of additive method.Photoelectric dew-point hygrometer has in easy to operate, and accuracy is high again, so generally as laboratory benchmark or standard.Photoelectric dew-point hygrometer is again a kind of instrument of hydrophobic, be not subject to the damage and the pollution of commercial production waste gas, even being subjected to polluting also cleans easily and is without prejudice, accuracy of measurement that can lowering apparatus, be fit to very much use in the industrial environment, to solve conventional commercial production problem.But photoelectric dew-point hygrometer is owing to the output terminal of its photoelectric detective circuit links through the power circuit of regulator and thermoelectric pump at present, the photosignal that the dewfall situation is transmitted on the condensation minute surface is fed the size of current of controlling thermoelectric pump, thereby change the condensation mirror temperature, therefore its reflection is a continuous dynamic process, can not obtain a fixed numeric values on the digital indicator, hinder its application in commercial production.
The purpose of this utility model is to provide a kind of photoelectric dew-point hygrometer of non-continuous, and water cut becomes possibility in the pin-point accuracy measurement gas in order to carry out under the commercial production condition.
The purpose of this utility model is achieved in that a kind of photoelectric dew-point hygrometer that comprises photoelectric detective circuit, thermoelectric pump, condensation minute surface, DC circuit, platinum temperature sensor, digital display circuit and dew point measuring chamber, it is characterized in that: two on/off controllers that are provided with relay and link with above-mentioned relay output end, the input end of above-mentioned relay and the output terminal of photoelectric detective circuit link, two on/off controllers also with digital display circuit in digital quantizer link, described thermoelectric pump directly and direct supply link.
The utility model will be further described below in conjunction with accompanying drawing.
Accompanying drawing is a structure principle chart of the present utility model.
Embodiment 1.The profile of present embodiment is a box structure, has firm casing 6.In casing 6, be provided with dew point measuring chamber 2.One end of dew point measuring chamber 2 communicates with extraneous tested source of the gas by spinner-type flowmeter 15, and the other end communicates with ambient atmosphere.Flatly be provided with condensation minute surface 4 in the dew point measuring chamber 2.Condensation minute surface 4 belows and thermoelectric pump 11 are combined closely.The scope that the progression of thermoelectric pump 11 is measured by instrument itself is decided.The below of thermoelectric pump 11 is provided with heating radiator 12.Be provided with fan 14 in the casing 6.Top at condensation minute surface 4 in the dew point measuring chamber 2 is provided with eyepiece 3.One end of eyepiece 3 stretches out outside the casing 6.Also be provided with light emitting diode 1 and photoelectric sensor 5 in the dew point measuring chamber 2; Their installation site is like this decision: the light beam that is sent by light emitting diode 1 is just in time received by photoelectric sensor 5 after 4 reflections of condensation minute surface.Also be provided with comparison amplifier A, relay J, two on/off controllers 8, direct supply 13 and digital quantizers 10 in the casing 6.Casing 6 is provided with acousto-optic generator 9 and digital indicator 12.The output terminal of photoelectric sensor 5 and comparison amplifier A input end link.Above-mentioned light emitting diode 1, photoelectric sensor 5, comparison amplifier A have constituted photoelectric detective circuit.Comparison amplifier A output terminal and relay J link.The output of relay J links with two on/off controllers 8 and acousto-optic generator 7 respectively.Two on/off controllers 8 link with digital quantizer 10 again.Platinum temperature sensor one end and condensation minute surface 4 connect, and the other end then links by interface and digital quantizer 10.The output terminal of digital quantizer 10 and digital indicator 9 link.Digital quantizer 10 and digital indicator 9 have constituted digital display circuit.Direct supply 13 links by cable and plug and extraneous power supply, and its direct current output links with thermoelectric pump 11.The flow that enters the tested gas of dew point measuring chamber 2 is controlled by the adjusting knob 16 that is arranged on the spinner-type flowmeter 15.When tested gas stream during through condensation minute surface 4, if the temperature decline degree of condensation minute surface 4 is not enough so that its condensation and dewfall, then the light beam that light emitting diode 1 sent is accepted by photoelectric sensor 5, comparison amplifier 7 output signal not then, relay J is not worked, two go side formula controllers 8 and acousto-optic generator 7 are not worked, digital indicator 9 constantly show temperature that condensation minute surface 4 descends until tested gas on condensation minute surface 4 during dewfall, the light beam of light emitting diode 1 is scattered and can not receives, comparison amplifier A output signal, make 8 work of two on/off controllers by relay J, digital quantizer 10 is in the lock state.At this moment, digital indicator 9 shown stationary digital are dewpoint temperature.Acousto-optic generator 10 is sounded and light simultaneously.Acousto-optic generator 7 can be made up of common hummer and light emitting diode.
Embodiment 2.The profile of present embodiment is a box structure, has firm casing 6.In casing 6, be provided with dew point measuring chamber 2.One end of dew point measuring chamber 2 communicates with extraneous tested source of the gas by spinner-type flowmeter 15, and the other end communicates with ambient atmosphere.The inside of dew point measuring chamber 2 is provided with condensation minute surface 4.Condensation minute surface 4 is an inclination alpha (not shown) with horizontal direction; Above-mentioned inclination alpha changes between 45 °～90 °.Condensation minute surface 4 is obliquely installed condensate water is excluded better.Condensation minute surface 4 belows and thermoelectric pump 11 are combined closely.The scope that the progression of thermoelectric pump 11 is measured by instrument itself is decided.The below of thermoelectric pump 11 is provided with heating radiator 12.Be provided with fan 14 in the casing 6.Be provided with eyepiece 3 with condensation minute surface 4 in the dew point measuring chamber 2 vertically oppositely.Eyepiece 3 one ends stretch out outside the casing 6.Also be provided with light emitting diode 1 and photoelectric sensor 5 in the dew point measuring chamber 2; Their installation site is like this decision: the light beam that is sent by light emitting diode 1 is just in time received by photoelectric sensor 5 after 4 reflections of condensation minute surface.Also be provided with comparison amplifier A, relay J, two on/off controllers 8, direct supply 13 and digital quantizers 10 in the casing 6.Casing 6 is provided with acousto-optic generator 7 and digital indicator 9.The output terminal of photoelectric sensor 5 and comparison amplifier A input end link.Above-mentioned light emitting diode 1, photoelectric sensor 5, comparison amplifier A have constituted photoelectric detective circuit.Comparison amplifier A output terminal and relay J link.The output of relay J links with two on/off controllers 8 and acousto-optic generator 7 respectively.Two on/off controllers 8 link with digital quantizer 10 again.Platinum temperature sensor one end and condensation minute surface 4 connect, and the other end then links by interface and digital quantizer 10.The output terminal of digital quantizer 10 and digital indicator 9 link.Digital quantizer 10 and digital indicator 9 have constituted digital display circuit.Direct supply 13 links by cable and plug and extraneous power supply, and its direct current output links with thermoelectric pump 11.
The utility model is compared with existing photoelectric dew-point hygrometer, only need change the part parts and just can realize that the fixed number on the industrial production measures needs. So not only easily manufactured, with low cost; And can give full play to the ability of original tooling device, diversify, increase economic efficiency.
Claims (4)
1, a kind of photoelectric dew-point hygrometer that comprises photoelectric detective circuit, thermoelectric pump, condensation minute surface and DC circuit, platinum temperature sensor, digital display circuit and dew point measuring chamber, it is characterized in that: two on/off controllers that are provided with relay and link with above-mentioned relay output end, the input end of above-mentioned relay and the output terminal of photoelectric detective circuit link, two on/off controllers also with digital display circuit in digital quantizer link, described thermoelectric pump directly and direct supply link.
2, photoelectric dew-point hygrometer according to claim 1 is characterized in that: described relay output end also links with acousto-optic generator.
3, photoelectric dew-point hygrometer according to claim 1 and 2 is characterized in that: described condensation minute surface flatly is arranged in the dew point measuring chamber.
4, photoelectric dew-point hygrometer according to claim 1 and 2 is characterized in that: described condensation minute surface is arranged in the dew point measuring chamber obliquely, and its inclination alpha is 45 °～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226643 CN2179973Y (en) | 1993-11-29 | 1993-11-29 | Photoelectric instrument for investigating dew-point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226643 CN2179973Y (en) | 1993-11-29 | 1993-11-29 | Photoelectric instrument for investigating dew-point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2179973Y true CN2179973Y (en) | 1994-10-19 |
Family
ID=33804214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93226643 Expired - Fee Related CN2179973Y (en) | 1993-11-29 | 1993-11-29 | Photoelectric instrument for investigating dew-point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2179973Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650603A (en) * | 2011-02-23 | 2012-08-29 | 富士通株式会社 | Condensation sensing device, electronic apparatus, and condensation sensing method |
| CN104849313A (en) * | 2015-04-10 | 2015-08-19 | 北京兴迪仪器有限责任公司 | Design of chilled mirror method dew point instrument base structure |
| CN105651811A (en) * | 2016-01-21 | 2016-06-08 | 北京航空航天大学 | Device for measuring and controlling dew point temperature and implementation method thereof |
| CN112268930A (en) * | 2020-12-07 | 2021-01-26 | 广州奥松电子有限公司 | Dew point sensor |
-
1993
- 1993-11-29 CN CN 93226643 patent/CN2179973Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650603A (en) * | 2011-02-23 | 2012-08-29 | 富士通株式会社 | Condensation sensing device, electronic apparatus, and condensation sensing method |
| CN104849313A (en) * | 2015-04-10 | 2015-08-19 | 北京兴迪仪器有限责任公司 | Design of chilled mirror method dew point instrument base structure |
| CN105651811A (en) * | 2016-01-21 | 2016-06-08 | 北京航空航天大学 | Device for measuring and controlling dew point temperature and implementation method thereof |
| CN105651811B (en) * | 2016-01-21 | 2019-01-18 | 北京航空航天大学 | A kind of device and its implementation of measurement and control dew-point temperature |
| CN112268930A (en) * | 2020-12-07 | 2021-01-26 | 广州奥松电子有限公司 | Dew point sensor |
| CN112268930B (en) * | 2020-12-07 | 2021-04-13 | 广州奥松电子有限公司 | Dew point sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |