CN2039423U - Miniature intelligent dew point humidometer - Google Patents
Miniature intelligent dew point humidometer Download PDFInfo
- Publication number
- CN2039423U CN2039423U CN 88214288 CN88214288U CN2039423U CN 2039423 U CN2039423 U CN 2039423U CN 88214288 CN88214288 CN 88214288 CN 88214288 U CN88214288 U CN 88214288U CN 2039423 U CN2039423 U CN 2039423U
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- CN
- China
- Prior art keywords
- dew point
- humidity
- measurement
- temperature
- utility
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a miniature intelligent dew point humidometer which is used for measuring moisture content of air or other gases. The utility model is characterized in that a detector for moisture condensation state is made of a comb shape electrode, the dew point state is automatically controlled by a semiconductor cooler, and the intelligent control and measurement is realized by a miniature electronic computer. Having no connect with electrochemical effect in the process of work, the utility model has the advantages of no aging, long service life and wide range of measurement, being used for humidity measurement of various gases with low pressure to high pressure, low temperature to high-temperature and low humidity to high humidity.
Description
The utility model relates to a kind of humidity measuring instrument, is to utilize comb electrode to be the dewfall state detector, uses microcomputer, controls the humidity measuring instrument of dew point state automatically by semiconductor cooler.
At present, commercial electrohydrometer, its sensor is how relevant with electrochemical effect, so service condition is had more restriction, shortcomings such as existence is aging and lack serviceable life, and still do not have the humidity measurement instrument that reliably is used for high temperature (60～90 ℃), high humidity (more than the 95%R.H) so far both at home and abroad.For addressing this problem, the utility model utilizes the not effect of change in physical properties simultaneously of humidity, makes a kind of and the irrelevant novel humidity sensor of electrochemical effect, its no problem of aging, and the hygrometric scope is wide, and long service life does not have strict the restriction to test environment.
The purpose of this utility model provides a kind of dew point formula hygrometer that is widely used in air or other gases.This physical characteristics appears reducing suddenly when it utilizes resistance between miniature comb electrode from non-dewfall to the dewfall state, to differentiate the dew point state; Utilize single-stage or multistage micro semiconductor refrigerator to make low-temperature receiver again, make the temperature difference can be up to about 100 ℃, so the very low relative humidity of energy measurement, the moisture measurement scope be wide.Intelligent miniature dew point formula hygrometer is with the temperature sensor of measuring dry-bulb temperature, it utilizes microcomputer to control processing with measurement data automatically, so can indicate multiple physical quantitys such as dewpoint temperature, dry-bulb temperature, relative humidity, water capacity and enthalpy.
The purpose of this utility model is achieved in that two-sided hot junction with micro semiconductor refrigerator of beryllia or alumina ceramic plate is linked to each other with heating radiator; The cold junction outside surface of this refrigerator is made comb electrode, and micro temperature sensor is housed.Utilize microcomputer to control the working current of semiconductor cooler automatically, make comb electrode be in critical dewfall state.Measure the temperature of comb electrode under the critical dewfall state and the dry-bulb temperature of tested gas simultaneously, get final product parameters such as displays temperature, humidity and enthalpy.
The utility model is because all adopt miniature unit, device, so inertia is little, volume is little; Simultaneously owing to utilizing computing machine, so can give intelligent function.
Concrete structure of the present utility model is provided by the following drawings:
Fig. 1 is by the dew point formula humidity sensor that semiconductor cooler constituted that has comb electrode and dew point temperature sensor.The hot junction of semiconductor cooler (1) links to each other by the direct soldering of metallized insulating ceramic film (8) and heating radiator (2).The inside surface of the cold junction insulating ceramic film (5) of this refrigerator utilizes the directly soldering of water conservancy diversion copper sheet (6) of method for metallising and cooling element (7); Its outside surface is made comb electrode (4), and in the center micro temperature sensor (3) is housed.
Fig. 2 is that the hygroscopic system of intelligent miniature dew point formula constitutes calcspar.Comb electrode (13) in the dew point formula humidity sensor (11) is connected to the A/D interface of MCU microcomputer unit (16) through resistance converter (19), dew point temperature sensor (12) also is connected to the A/D interface of (16) through temperature transmitter (17), and semiconductor cooler (14) is accepted the control command that computing machine (16) sends by the D/A interface through current controller (15).Dry-bulb temperature sensor (18) is connected to the A/D interface of computing machine (16) through temperature transmitter (17).Keyboard in the computing machine (16) is used for the selection of measurement parameter, and measurement result is indicated by display, also can be by printer output.
Irrelevant with tested gas ingredients, pressure, temperature in the Miniature intelligent dew point humidometer course of work, can be widely used in low pressure to high pressure, low temperature to high temperature, the paramount wet condition of low humidity under the moisture measurement of multiple gases.
Claims (3)
1, a kind of dew point formula humidity measuring instrument is characterized in that utilizing comb electrode to be the dewfall state detector, controls the dew point state automatically by semiconductor cooler, uses microcomputer to realize Based Intelligent Control and measurement.
2, device according to claim 1 is characterized in that constituting dew point formula humidity sensor by the semiconductor cooler that has comb electrode and dew point temperature sensor.
3, according to claim 1 and 2 described devices, it is characterized in that being equipped with simultaneously dry-bulb temperature sensor, utilize microcomputer, measure by dew point and dry-bulb temperature, constitute the intelligence instrument of multiple physical quantitys such as showing tested gas dew point temperature, dry-bulb temperature, relative humidity, water capacity and enthalpy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214288 CN2039423U (en) | 1988-09-29 | 1988-09-29 | Miniature intelligent dew point humidometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214288 CN2039423U (en) | 1988-09-29 | 1988-09-29 | Miniature intelligent dew point humidometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2039423U true CN2039423U (en) | 1989-06-14 |
Family
ID=4847249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88214288 Withdrawn CN2039423U (en) | 1988-09-29 | 1988-09-29 | Miniature intelligent dew point humidometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2039423U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207213A (en) * | 2013-03-21 | 2013-07-17 | 王競逸 | Moisture condensation detecting device |
| CN104048697A (en) * | 2014-05-28 | 2014-09-17 | 上海朋皆欣自动化科技有限公司 | Environmental parameter detector |
| CN104220868A (en) * | 2012-04-16 | 2014-12-17 | 爱斯佩克株式会社 | Hygrometer and constant-temperature/constant-humidity chamber provided with same |
| CN105987789A (en) * | 2015-02-03 | 2016-10-05 | 林海鸥 | Leak detection device for waste heat recovery heat exchanger |
| CN110231364A (en) * | 2019-07-03 | 2019-09-13 | 中国特种设备检测研究院 | A kind of on-line checking dew point corrosion probe unit |
-
1988
- 1988-09-29 CN CN 88214288 patent/CN2039423U/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104220868A (en) * | 2012-04-16 | 2014-12-17 | 爱斯佩克株式会社 | Hygrometer and constant-temperature/constant-humidity chamber provided with same |
| CN104220868B (en) * | 2012-04-16 | 2016-08-24 | 爱斯佩克株式会社 | Hygrometer and possess this hygroscopic constant temperature and humidity cabinet |
| CN105938115A (en) * | 2012-04-16 | 2016-09-14 | 爱斯佩克株式会社 | Hygrometer and temperature-humidity chamber provided with same |
| CN105938115B (en) * | 2012-04-16 | 2018-11-13 | 爱斯佩克株式会社 | Hygrometer and the constant temperature and humidity cabinet for having the hygrometer |
| US10481078B2 (en) | 2012-04-16 | 2019-11-19 | Espec Corp. | Hygrometer and temperature-humidity chamber provided with same |
| CN103207213A (en) * | 2013-03-21 | 2013-07-17 | 王競逸 | Moisture condensation detecting device |
| CN104048697A (en) * | 2014-05-28 | 2014-09-17 | 上海朋皆欣自动化科技有限公司 | Environmental parameter detector |
| CN105987789A (en) * | 2015-02-03 | 2016-10-05 | 林海鸥 | Leak detection device for waste heat recovery heat exchanger |
| CN110231364A (en) * | 2019-07-03 | 2019-09-13 | 中国特种设备检测研究院 | A kind of on-line checking dew point corrosion probe unit |
| CN110231364B (en) * | 2019-07-03 | 2024-05-03 | 中国特种设备检测研究院 | On-line detection dew point corrosion probe device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100083, Beijing, Haidian District, Wang Zhuang, Tsinghua University, southeast district, building 3, 501 Applicant after: Zhang Ruiwu Address before: No. 302, building seventeen, southwest building, Tsinghua University, Beijing Applicant before: Zhang Ruiwu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT ADDRESS; FROM: NO. 302, UNIT 1, XINANSHIQI HOUSE, QINGHUA COLLEGE, BEIJING CITY TO: 501, BUILDING 3, DONGNAN RESIDENTIAL QUATER, XIWANGZHUANGQINGHUA COLLEGE, HAIDIAN DISTRICT, BEIJING CITY, 100083 |
|
| 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 |