CN203422334U - Standard aspirated psychrometer - Google Patents
Standard aspirated psychrometer Download PDFInfo
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- CN203422334U CN203422334U CN201320537894.9U CN201320537894U CN203422334U CN 203422334 U CN203422334 U CN 203422334U CN 201320537894 U CN201320537894 U CN 201320537894U CN 203422334 U CN203422334 U CN 203422334U
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Abstract
The utility model discloses a standard aspirated psychrometer. A dry bulb thermometer, a wet bulb thermometer and a water supply cooling device are correspondingly mounted on three air channels of a ventilation structure body; a dry bulb anti-radiation jacket, a wet bulb anti-radiation jacket and a sleeve anti-radiation jacket respectively cover the dry bulb thermometer, the wet bulb thermometer and the water supply cooling device; each anti-radiation jacket is connected together with the ventilation structure body through a heat insulation connection pipe; the water supply cooling device comprises a stainless steel sleeve, a first water feed jacket, a second water feed jacket, a third water feed jacket, a heat insulation body and a water storage container; the first water feed jacket is arranged on the outer wall of the stainless steel sleeve; the second water feed jacket clings to the inner wall of the stainless steel sleeve through the heat insulation body; the third water feed sleeve is arranged on the outer wall of the wet bulb anti-radiation jacket; water guiding lines led out through the water feed jackets are immersed into the water storage container; an extension section led out through the second water feed jacket is connected together with a wet bulb water feed jacket arranged on the wet bulb thermometer, so that the wet bulb water feed jacket feeds water through the second water feed jacket. The standard aspirated psychrometer disclosed by the utility model reaches a level that the measurement error is less than +/-1% RH (relative humidity).
Description
Technical field
The utility model relates to a kind of standard aspirated psychrometer, relates in particular to a kind of standard aspirated psychrometer that adopts measurement with wet.
Background technology
Measurement with wet is measured humidity and in humidity measuring method, is occupied critical role, and the standard aspirated psychrometer of measurement with wet is for a long time as other hygroscopic standard of calibrating.Current standard aspirated psychrometer mainly exists two problems not to be well solved, and the one, the water temperature problem not identical with wet-bulb temperature that wet bulb supplies water, the 2nd, the problem that radiation protection sleeve is not identical with wet-bulb temperature.These two problems are two important sources of standard aspirated psychrometer measuring error, are also two major reasons that cause the accuracy of measurement of standard aspirated psychrometer further not improve.
In use all there is a problem that adds water to upper water sleeve (also referred to as wet bulb gauze) in aspirated psychrometer.Current standard aspirated psychrometer, use one to be exposed to tested airborne tank and to supply water to upper water sleeve, so in the ordinary course of things, will cause the water temperature in tank identical with the temperature of tested air, higher than the wet-bulb temperature that should reach, obviously because water temperature is higher than wet-bulb temperature, this just brings extra error to the measurement of wet-bulb temperature.At present, wet bulb supplies water water temperature and the inconsistent error causing of wet-bulb temperature are not effectively eliminated.
In addition, current standard aspirated psychrometer, adopts the method for radiation protection sleeve to shield the radiation of foreign radiation sources to wet bulb.Generally, the temperature of radiation protection sleeve is identical with the temperature of tested air, higher than the wet-bulb temperature that should reach, at this moment because radiation protection sleeve temperature is higher than wet-bulb temperature, has caused the heat radiation of radiation protection sleeve to wet bulb itself.Therefore,, although radiation protection sleeve has shielded the direct radiation of foreign radiation sources to wet bulb, there is no the heat radiation of solution to wet bulb itself.At present, the wet-bulb temperature error that this factor causes is not effectively eliminated.
Utility model content
The purpose of this utility model is to solve water temperature problem and radiation protection sleeve with the wet-bulb temperature not identical problem not identical with wet-bulb temperature that wet bulb supplies water, the standard aspirated psychrometer that provides a kind of accuracy of measurement to be significantly improved.
The technical solution adopted in the utility model is: a kind of standard aspirated psychrometer, comprise aeration structure body, be installed on the dry bulb thermometer on the first air channel of aeration structure body lower end and be installed on the wet bulb thermometer on the second air channel of aeration structure body lower end, described dry bulb and wet bulb thermometer are installed on aeration structure body by dry bulb and the adiabatic installation sleeve of wet bulb respectively;
Described standard aspirated psychrometer also comprises the water supply heat sink being fixedly installed on described aeration structure body, described water supply heat sink comprises tank, the 3rd upper water sleeve and be installed on the sheathed body on the 3rd air channel of aeration structure body lower end, described sheathed body comprises stainless steel sleeve pipe, the first and second upper water sleeves, and heat guard, described the first upper water sleeve is arranged on the outer wall of stainless steel sleeve pipe, described the second upper water sleeve is installed by the adaptation between heat guard and stainless steel sleeve pipe and is close to the inwall of stainless steel sleeve pipe, described the 3rd upper water sleeve is arranged on the outer wall of described wet bulb radiation protection sleeve, through described first, second and the diversion line of drawing of the 3rd upper water sleeve immerse in tank, the extension of drawing through described the second upper water sleeve is connected as a single entity with the wet bulb upper water sleeve being arranged on wet bulb thermometer, make wet bulb upper water sleeve water on the second upper water sleeve, and,
Described dry bulb thermometer, wet bulb thermometer and sheathed external dry bulb, wet bulb and the sheathed body radiation protection sleeve of being covered with respectively, described dry bulb, wet bulb and sheathed body radiation protection sleeve link together by the adiabatic connecting pipe of dry bulb, wet bulb and sheathed body and aeration structure body respectively.
Preferably, described dry bulb radiation protection sleeve comprises radiation proof inner sleeve, jacket and the antiradiation cover linking together with the adiabatic connecting pipe of dry bulb, described radiation proof inner sleeve is installed on the inside of antiradiation cover by jacket, make to form ring-type plenum area between antiradiation cover and inner sleeve, described jacket is provided with the air vent of air feed in ring-type plenum area enters the first air channel.
Preferably, described sheathed body radiation protection sleeve comprises radiation proof inner sleeve, jacket and the antiradiation cover linking together with the adiabatic connecting pipe of sheathed body, described radiation proof inner sleeve is installed on the inside of antiradiation cover by jacket, make to form ring-type plenum area between antiradiation cover and inner sleeve, described jacket is provided with the air vent of air feed in ring-type plenum area enters the 3rd air channel.
Preferably, described wet bulb radiation protection sleeve comprises radiation proof inner sleeve and the antiradiation cover linking together with the adiabatic connecting pipe of wet bulb, described radiation proof inner sleeve is fixedly installed in the inside of antiradiation cover by the fixed bar being connected with water exit container, interval between antiradiation cover and radiation proof inner sleeve is arranged, and making radiation proof endotheca shield be located at the outside of wet bulb upper water sleeve, described the 3rd upper water sleeve is arranged on the outer wall of radiation proof inner sleeve.
The airborne part that is exposed to of the diversion line of preferably, drawing through described first, second, and third upper water sleeve all covers in sleeve pipe.
The part between stainless steel sleeve pipe and the radiation proof inner sleeve of wet bulb radiation protection sleeve of the extension that preferably, described the second upper water sleeve is drawn is covered with insulation casing outward.
Preferably, described heat guard is elastic body, described heat guard is pressed in the inner chamber of stainless steel sleeve pipe by there is elastic deformation, and described heat guard is through on the fixed bar being connected with tank, sheathed body is installed on the 3rd air channel of aeration structure body lower end.
Preferably, the adiabatic installation sleeve of described dry bulb and wet bulb is threaded connection structure and is installed on aeration structure body, and described dry bulb and wet bulb thermometer are arranged in respectively in dry bulb and the adiabatic installation sleeve of wet bulb.
Preferably, described aeration structure body has the neck cervical part of esophagus inside contracting the top of blower fan being installed and forming between the lower end in first, second, and third air channel.
Preferably, described dry bulb and wet bulb thermometer are compensation by thermistor.
The beneficial effect of utility model is:
(1) by water supply heat sink being set on the basis at existing standard aspirated psychrometer and carrying out various insulation, make the moisture measurement accuracy of standard aspirated psychrometer of the present utility model obtain significantly improving, reached the level of be less than ± 1%RH, than existing standard aspirated psychrometer, improved approximately 1 times, reached the level of the large-scale standard aspirated psychrometer that can only use under laboratory condition.
(2) current standard aspirated psychrometer is for only to have the main body aeration structure in two air channels, and the main body aeration structure of insulation standard aspirated psychrometer of the present utility model is provided with three air channels, and one of them air channel is used for installing water supply heat sink.
(3) be different from current standard aspirated psychrometer, the utility model utilizes the evaporating principle of measurement with wet, utility model water supply heat sink make its forced draft, the water temperature that wet bulb upper water sleeve supplies water, the temperature obtaining after the cooling of water supply heat sink is identical with wet-bulb temperature.
(4) be different from current standard aspirated psychrometer, the utility model utilizes the evaporating principle of measurement with wet, utility model wet bulb radiation protection sleeve after the 3rd upper water sleeve being installed and being forced to ventilate, make the temperature of wet bulb radiation protection sleeve identical with wet-bulb temperature, for wet bulb radiation protection sleeve being designed to the structure of spaced antiradiation cover and inner sleeve, the temperature of radiation proof inner sleeve that is specially wet bulb radiation protection sleeve is identical with wet-bulb temperature.
(5) current standard aspirated psychrometer, the evaporation of upper water sleeve is a kind of isobaric process, standard aspirated psychrometer of the present utility model, the water temperature supplying water due to wet bulb is identical with wet-bulb temperature, make the evaporation of wet bulb upper water sleeve become adiabatic process by isobaric process, can obtain stable wet-bulb temperature, be tending towards approaching real thermodynamic wet-bult temperature.Therefore, standard aspirated psychrometer of the present utility model, is a kind of insulation standard aspirated psychrometer.
(6) wet bulb radiation protection sleeve is identical with wet-bulb temperature, has effectively eliminated the heat radiation of wet bulb radiation protection sleeve to wet bulb, has effectively eliminated the wet-bulb temperature measuring error of this introducing.
(7) by utilizing tested gas and wet and dry bulb ratio juris, the water temperature that can realize wet bulb water supply is identical with wet-bulb temperature, and the temperature that realizes wet bulb radiation protection sleeve is identical with wet-bulb temperature, without extra complicated refrigerating plant and opertaing device.
Accompanying drawing explanation
Fig. 1 shows the cross-sectional schematic according to standard aspirated psychrometer described in the utility model;
Fig. 2 shows the cross-sectional schematic of radiation protection sleeve in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As illustrated in fig. 1 and 2, standard aspirated psychrometer of the present utility model comprises aeration structure body 1, be installed on the dry bulb thermometer 3 on the first air channel 13a of aeration structure body lower end 13 and be installed on the wet bulb thermometer 2 on the second air channel 13b of aeration structure body lower end 13, at this, dry bulb thermometer 3 and wet bulb thermometer 2 are installed on the lower end 13 of aeration structure body 1 by the adiabatic installation sleeve 4a of dry bulb and the adiabatic installation sleeve 4b of wet bulb respectively, in case stop-pass wind structure 1 conducts its heat to dry bulb thermometer 3 and wet bulb thermometer 2; Outer dry bulb radiation protection sleeve 9a and the wet bulb radiation protection sleeve 9b of being covered with respectively of dry bulb thermometer 3 and wet bulb thermometer 2, dry bulb and wet bulb radiation protection sleeve 9a, 9b link together by the lower end 13 of the adiabatic connecting pipe 5a of dry bulb and the adiabatic connecting pipe 5b of wet bulb and aeration structure body 1 respectively, can prevent that like this aeration structure body 1 from conducting heat to dry bulb and wet bulb radiation protection sleeve 9a, 9b.
Standard aspirated psychrometer of the present utility model also comprises water supply heat sink, it comprises the 3rd upper water sleeve 64, tank 69 and be installed on the sheathed body on the 3rd air channel 13c of aeration structure body lower end 13, this sheathed body comprises stainless steel sleeve pipe 61, the first upper water sleeve 63, the second upper water sleeve 67 and heat guard 62, wherein, the first upper water sleeve 63 is wound around or is sheathed on (at this, can on outer wall, form upper water sleeve by directly wet bulb gauze being wound in, also can adopt the upper water sleeve finished product with specific modality having wound) on the outer wall of stainless steel sleeve pipe 61, the second upper water sleeve 67 is by being installed in the inner chamber of this stainless steel sleeve pipe 61 heat guard 62 adaptations and being close to the inwall of stainless steel sleeve pipe 61, the 3rd upper water sleeve 64 is wound around or is sheathed on the outer wall of above wet bulb radiation protection sleeve 9b, through first, the second and the 3rd upper water sleeve 63, 67, the diversion line 63a that 64 correspondences are drawn, 67a, 64a all immerses in tank 69, the extension of drawing through the second upper water sleeve 67 is connected as a single entity with the wet bulb upper water sleeve 7 being arranged on wet bulb thermometer 2, make wet bulb upper water sleeve 7 water on the second upper water sleeve 67, above tank 69 for example can be fixedly installed on aeration structure body 1 by connecting link 610, and heat guard 62 can be through on the fixed bar 611 being connected with tank 69, sheathed body is installed on the 3rd air channel 13c of aeration structure body 1 lower end.The sheathed external sheathed body radiation protection sleeve 9c that is covered with above, sheathed body radiation protection sleeve 9c links together by the adiabatic connecting pipe 5c of sheathed body and aeration structure body 1, can prevent that like this aeration structure body 1 from conducting heat to sheathed body radiation protection sleeve 9c.
Tested gas is forced to ventilate, and flows through stainless steel sleeve pipe 61 from bottom to top, the evaporation based on measurement with wet, and stainless steel sleeve pipe 61 produces temperature drops, makes to be close to the water generates temperature drop in the diversion line 67a of the second upper water sleeve 67 of stainless steel sleeve inside pipe wall simultaneously.For the first upper water sleeve 63, based on evaporation of water effect in the first upper water sleeve 63, can make the temperature of stainless steel sleeve pipe 61 drop to and approach wet-bulb temperature; Wet bulb upper water sleeve 7 be connected as a single entity with the second upper water sleeve 67 (the two can be entwined by same wet bulb gauze) make the temperature of wet bulb upper water sleeve 7 identical with the temperature of stainless steel sleeve pipe 61, basic identical with wet-bulb temperature, outside the part between stainless steel sleeve pipe 61 and wet bulb radiation protection sleeve 9b of extension, can cover and establish an insulation casing 65, with to extension insulation, can further guarantee the consistance of the temperature of wet bulb upper water sleeve 7 and the temperature of stainless steel sleeve pipe 61; And the 3rd upper water sleeve 64 on wet bulb radiation protection sleeve 9b, based on evaporation of water effect in the 3rd upper water sleeve 64 equally, the temperature of wet bulb radiation protection sleeve 9b will drop to wet-bulb temperature basically identical, so just can effectively reduce and between wet bulb radiation protection sleeve 9b and wet bulb thermometer, carry out radiant heat exchange.Like this, in wet bulb upper water sleeve 7, the temperature of water and wet-bulb temperature are basic identical, the evaporation process that makes moisture in wet bulb upper water sleeve is ideal process, the isobaric process from common standard aspirated psychrometer becomes adiabatic process, approach real thermodynamic wet-bult temperature, can effectively reduce measuring error like this.
In order further to reduce the impact of heat radiation on measuring accuracy, dry bulb radiation protection sleeve 9a in the utility model and sheathed body radiation protection sleeve 9c can adopt identical radiation protection sleeve structure, as shown in Figure 2, this radiation protection sleeve 9 comprises radiation proof inner sleeve 92, jacket 93 and correspondence and dry bulb, the adiabatic connecting pipe 5a of sheathed body, the antiradiation cover 91 that 5c links together, radiation proof inner sleeve 92 is installed on the inside of antiradiation cover 91 by jacket 93, be adiabatic between radiation proof inner sleeve 92 and antiradiation cover 91, make to form ring-type plenum area between antiradiation cover 91 and inner sleeve 92, this jacket 93 is provided with air feed and enters the first air channel 13a through ring-type plenum area correspondence, air vent 931 in the 3rd air channel 13c.And wet bulb radiation protection sleeve 9b in the utility model comprises radiation proof inner sleeve and the antiradiation cover linking together with the adiabatic connecting pipe 5b of wet bulb too, different is, radiation proof inner sleeve is fixedly installed in the inside of antiradiation cover by the fixed bar 612 being connected with water exit container 69, interval between antiradiation cover and radiation proof inner sleeve is arranged, this radiation proof endotheca shield is located at the outside of wet bulb upper water sleeve 7, and above-mentioned the 3rd upper water sleeve 64 is specifically arranged on the outer wall of radiation proof inner sleeve of wet bulb radiation protection sleeve 9b.Adopt double-deck radiation protection sleeve, can prevent that overcoat from conducting heat to inner sleeve, double-deck radiation protection sleeve can effectively shield the outside heat radiation such as the sun, light.
For the ease of the setting of the second upper water sleeve 67, this heat guard can adopt external diameter to be slightly larger than the elastic body of stainless steel sleeve pipe 61, like this by elastic body being pressed in the inner chamber of stainless steel sleeve pipe 61, just can guarantee that the inwall of the second upper water sleeve 67 and stainless steel sleeve pipe 61 is close to.
The diversion line 63a that first, second, and third above upper water sleeve 63,67,64 correspondences are drawn, 67a, 64a are exposed to airborne part (i.e. not water-immersed part) and can cover by sleeve pipe, to prevent that entering wet-bulb temperature after the moisture evaporation of diversion line measures in passage.In the present embodiment, because the position of the first and second upper water sleeves is approaching, diversion line 63a, 67a can be covered in same sleeve pipe 68, diversion line 64a covers in another sleeve pipe 66.
Above dry bulb and wet bulb thermometer can be the compensation by thermistor that size is less (its size can be only φ 3mm * 13mm), be conducive to like this reduce the overall volume of standard aspirated psychrometer, reduce its requirement to installing space, in addition, due to the error of compensation by thermistor can be controlled in ± 0.01 ℃, the platinum-resistance thermometer that phase ratio error is ± 0.06 ℃ can further reduce measuring error.
As shown in Figure 2, the adiabatic installation sleeve 4a of dry bulb and wet bulb, 4b for example can be threaded connection on the lower end 13 that structure is installed on aeration structure body 1, and dry bulb and wet bulb thermometer 3,2 are arranged in respectively in dry bulb and the adiabatic installation sleeve 4a of wet bulb, 4b.In like manner, one end of the adiabatic connecting pipe 5a of dry bulb, wet bulb and sheathed body, 5b, 5c can be threaded connection on the lower end 13 that structure is installed on aeration structure body 1, and the antiradiation cover of dry bulb, wet bulb and sheathed body radiation protection sleeve 9a, 9b, 9c also can be threaded connection structural correspondence and is installed on the other end of the adiabatic connecting pipe 5a of dry bulb, wet bulb and sheathed body, 5b, 5c.
As illustrated in fig. 1 and 2, aeration structure body 1 has the neck cervical part of esophagus 12 inside contracting the top 11 of blower fan 24 being installed and forming between the lower end 13 in air channel, both sides, during measurement, the air suction mode of blower fan 24, tested gas is through dry bulb and wet bulb thermometer 3,2 and the discharge of sheathed direction of flow top of the lower end 13 of aeration structure body 1, middle neck cervical part of esophagus 12 can make gas flow rate increase, and increases the homogeneity of gas flow rate.Above aeration structure body 1 can be one-body molded, also can adopt the structure of top 11, neck cervical part of esophagus 12 and lower end 13 split designs, and three parts can be threaded connection structure and fit together.
Be only the utility model preferred embodiment in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should belong to technology category of the present utility model.
Claims (10)
1. a standard aspirated psychrometer, comprise aeration structure body, be installed on the dry bulb thermometer on the first air channel of aeration structure body lower end and be installed on the wet bulb thermometer on the second air channel of aeration structure body lower end, described dry bulb and wet bulb thermometer are installed on aeration structure body by dry bulb and the adiabatic installation sleeve of wet bulb respectively; It is characterized in that:
Described standard aspirated psychrometer also comprises the water supply heat sink being fixedly installed on described aeration structure body, described water supply heat sink comprises tank, the 3rd upper water sleeve and be installed on the sheathed body on the 3rd air channel of aeration structure body lower end, described sheathed body comprises stainless steel sleeve pipe, the first and second upper water sleeves, and heat guard, described the first upper water sleeve is arranged on the outer wall of stainless steel sleeve pipe, described the second upper water sleeve is installed by the adaptation between heat guard and stainless steel sleeve pipe and is close to the inwall of stainless steel sleeve pipe, described the 3rd upper water sleeve is arranged on the outer wall of described wet bulb radiation protection sleeve, through described first, second and the diversion line of drawing of the 3rd upper water sleeve immerse in tank, the extension of drawing through described the second upper water sleeve is connected as a single entity with the wet bulb upper water sleeve being arranged on wet bulb thermometer, make wet bulb upper water sleeve water on the second upper water sleeve, and,
Described dry bulb thermometer, wet bulb thermometer and sheathed external dry bulb, wet bulb and the sheathed body radiation protection sleeve of being covered with respectively, described dry bulb, wet bulb and sheathed body radiation protection sleeve link together by the adiabatic connecting pipe of dry bulb, wet bulb and sheathed body and aeration structure body respectively.
2. standard aspirated psychrometer according to claim 1, it is characterized in that: described dry bulb radiation protection sleeve comprises radiation proof inner sleeve, jacket and the antiradiation cover linking together with the adiabatic connecting pipe of dry bulb, described radiation proof inner sleeve is installed on the inside of antiradiation cover by jacket, make to form ring-type plenum area between antiradiation cover and inner sleeve, described jacket is provided with the air vent of air feed in ring-type plenum area enters the first air channel.
3. standard aspirated psychrometer according to claim 1, it is characterized in that: described sheathed body radiation protection sleeve comprises radiation proof inner sleeve, jacket and the antiradiation cover linking together with the adiabatic connecting pipe of sheathed body, described radiation proof inner sleeve is installed on the inside of antiradiation cover by jacket, make to form ring-type plenum area between antiradiation cover and inner sleeve, described jacket is provided with the air vent of air feed in ring-type plenum area enters the 3rd air channel.
4. standard aspirated psychrometer according to claim 1, it is characterized in that: described wet bulb radiation protection sleeve comprises radiation proof inner sleeve and the antiradiation cover linking together with the adiabatic connecting pipe of wet bulb, described radiation proof inner sleeve is fixedly installed in the inside of antiradiation cover by the fixed bar being connected with water exit container, interval between antiradiation cover and radiation proof inner sleeve is arranged, and making radiation proof endotheca shield be located at the outside of wet bulb upper water sleeve, described the 3rd upper water sleeve is arranged on the outer wall of radiation proof inner sleeve.
5. according to the standard aspirated psychrometer described in any one in claim 1 to 4, it is characterized in that: the airborne part that is exposed to of the diversion line of drawing through described first, second, and third upper water sleeve all covers in sleeve pipe.
6. according to the standard aspirated psychrometer described in any one in claim 1 to 4, it is characterized in that: the part between stainless steel sleeve pipe and the radiation proof inner sleeve of wet bulb radiation protection sleeve of the extension that described the second upper water sleeve is drawn is covered with insulation casing outward.
7. standard aspirated psychrometer according to claim 1, it is characterized in that: described heat guard is elastic body, described heat guard is pressed in the inner chamber of stainless steel sleeve pipe by there is elastic deformation, described heat guard is through on the fixed bar being connected with tank, sheathed body is installed on the 3rd air channel of aeration structure body lower end.
8. standard aspirated psychrometer according to claim 1, it is characterized in that: the adiabatic installation sleeve of described dry bulb and wet bulb is threaded connection structure and is installed on aeration structure body, described dry bulb and wet bulb thermometer are arranged in respectively in dry bulb and the adiabatic installation sleeve of wet bulb.
9. standard aspirated psychrometer according to claim 1, is characterized in that: described aeration structure body has the neck cervical part of esophagus inside contracting the top of blower fan being installed and forming between the lower end in first, second, and third air channel.
10. standard aspirated psychrometer according to claim 1, is characterized in that: described dry bulb and wet bulb thermometer are compensation by thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537894.9U CN203422334U (en) | 2013-08-30 | 2013-08-30 | Standard aspirated psychrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537894.9U CN203422334U (en) | 2013-08-30 | 2013-08-30 | Standard aspirated psychrometer |
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| Publication Number | Publication Date |
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| CN203422334U true CN203422334U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320537894.9U Expired - Fee Related CN203422334U (en) | 2013-08-30 | 2013-08-30 | Standard aspirated psychrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454310A (en) * | 2013-08-30 | 2013-12-18 | 广州赛宝计量检测中心服务有限公司 | Standard ventilating psychrometer |
| CN107543842A (en) * | 2017-10-20 | 2018-01-05 | 上海理工大学 | High-temperature flue gas wet bulb temperature measuring device |
-
2013
- 2013-08-30 CN CN201320537894.9U patent/CN203422334U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454310A (en) * | 2013-08-30 | 2013-12-18 | 广州赛宝计量检测中心服务有限公司 | Standard ventilating psychrometer |
| CN107543842A (en) * | 2017-10-20 | 2018-01-05 | 上海理工大学 | High-temperature flue gas wet bulb temperature measuring device |
| CN107543842B (en) * | 2017-10-20 | 2024-02-27 | 上海理工大学 | High-temperature flue gas wet bulb temperature measuring device |
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