CN104345123A - Pneumatic saturated salt solution humidity generator - Google Patents
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- CN104345123A CN104345123A CN201310336973.8A CN201310336973A CN104345123A CN 104345123 A CN104345123 A CN 104345123A CN 201310336973 A CN201310336973 A CN 201310336973A CN 104345123 A CN104345123 A CN 104345123A
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Abstract
The present invention provides a pneumatic saturated salt solution humidity generator, which comprises a foaming chamber and a calibration chamber connected with the foaming chamber, wherein the foaming chamber comprises a pre-treater for achieving water-vapor balance treatment between gas provided by a gas source and a salt solution and a saturator generating saturated wet air on the base of the water-vapor balance treatment, a micro-pore foaming head and a first temperature sensor for detecting the salt solution temperature are further arranged in the saturator, and a second temperature sensor for detecting the calibration chamber temperature is arranged in the calibration chamber. According to the present invention, the temperature sensor is adopted to replace the constant temperature tank structure arrangement in all the previous saturated salt solution humidity generators, and the pneumatic saturated salt solution humidity generator doing not require the constant temperature tank has characteristics of small volume, easy carrying, high efficiency, achievement of reproduction of the saturated salt solution humidity true value under the condition of the sufficiently-high temperature measurement accuracy, no special requirements on the use environment and the like.
Description
Technical field
The invention belongs to test apparatus field, relate to a kind of pneumatic type saturated salt solution humidity generator utilizing saturated salt solution constant humidity principle, be applied to demarcation and the calibration test of humidity sensor.
Background technology
The constant humidity characteristic of saturated salt solution, refers to that the relative humidity on the surface of the saturated aqueous solution of some salt has determined value.Utilize the humidity true value that this characteristic reappears, can be used for demarcating, calibrating humidity sensor.
But, in the humidity sensor calibrating installation utilizing saturated salt solution constant humidity existing or saturated salt solution humidity generator, exist and much affect the demarcation of humidity sensor and the technical matters of calibration test effect, wherein the most outstandingly be, nearly all saturated salt solution Humidity Calibration Device In Test all needs constant temperature, such as:
List of references 1(Chinese utility model patent number: ZL200420085588.7) the Novel humidity working stamndard generator that provides, that moisture generating bottle is arranged in Water Tank with Temp.-controlled, its object is to the humidity error that the elimination internal system temperature difference causes, thus in the ideal situation, think that the humidity value of the soft air that generator exports is exactly the nominal humidity value of saturated salt solution.
The problem of list of references 1 is, even if in Water Tank with Temp.-controlled, in system, the temperature difference can not be eliminated completely, and therefore, the temperature control accuracy of calibration cell just limits the accuracy of humidity generator.
Simultaneously, owing to there is constant temperature requirement, the Novel humidity working stamndard generator therefore causing list of references 1 to provide is bulky, complex structure, and temperature control process also has influence on the response time of generator, require higher to environment for use, thus limit the possibility that it becomes portable use.
Summary of the invention
The invention provides a kind of pneumatic type saturated salt solution humidity generator, this generator does not need to arrange calibration cell, has volume little, be easy to carry, can multiple humidity point recur, the fireballing feature of aerogenesis, meanwhile, its accuracy is close to the level of reproduction saturated salt solution humidity true value.
The invention provides scheme as follows:
Embodiments provide a kind of pneumatic type saturated salt solution humidity generator, comprising:
The foaming chamber connected by the first air guide element and calibration chamber, the saturated moist air that described foaming chamber generates enters described calibration chamber by described first air guide element;
Wherein, described foaming chamber comprises:
For realizing gas that source of the gas provides and the pretreated pretreating containers of salt solusion moisture balance;
For producing the saturation vessel of saturated moist air on moisture balance pre-service basis;
Be provided with the first temperature sensor for detecting salt solusion temperature in described saturator, described first temperature sensor is immersed in the salt solusion of described saturator, and is connected with the controller be arranged at outside described foaming chamber;
Be provided with the second temperature sensor for testing calibration room temperature in described calibration chamber, described second temperature sensor is connected with described controller;
Described controller, for the salt solusion temperature detected based on described first temperature sensor, determine the relative humidity that described salt solusion temperature is corresponding, and based on described salt solusion temperature and relative humidity corresponding to described salt solusion temperature, determine the dewpoint temperature of the saturated moist air that described saturator produces; Described controller, also for the calibration chamber temperature that detects based on described second temperature sensor and described dewpoint temperature, calculate the relative humidity of the soft air in calibration chamber, to carry out the calibration of humidity sensor based on the rh value of the soft air in calibration chamber.
Preferably, described pretreating containers and saturator are the container of closed structure, and described pretreating containers and saturator are built with same salt solusion;
The first end of described first air guide element is arranged at edge under the hermetically-sealed construction of described saturator, and the second end of described first air guide element connects the first end of described calibration chamber.
Preferably, described pretreater is connected by the second air guide element with saturator, the first end of described second air guide element is arranged at edge under the hermetically-sealed construction of described pretreater, second end of described second air guide element is arranged in described saturator, second end of described second air guide element is provided with microporous foam head, and described microporous foam head is immersed in bottom the salt solusion of described saturator.
Preferably, described pretreater connects described source of the gas by the 3rd air guide element, and the first end of described 3rd air guide element is arranged at bottom the salt solusion of pretreater, and the second end of described 3rd air guide element connects described source of the gas.
Preferably, between described foaming chamber and source of the gas, be in series with the flowmeter for detecting gas flow.
Preferably, foaming chamber group is comprised in described pneumatic type saturated salt solution humidity generator;
Described foaming chamber group comprises the foaming chamber of multiple parallel connection.
Preferably, the air source inlet place of each foaming chamber in described foaming chamber group is provided with the solenoid valve controlled by described controller.
Preferably, be series relationship between described source of the gas, flowmeter, foaming chamber group, calibration chamber.
Preferably, the second end of described calibration chamber is uncovered.
Preferably, between the foaming chamber that described first air guide element connects and calibration chamber, filtrator is serially connected with.
As can be seen from the above, the invention provides a kind of pneumatic type saturated salt solution humidity generator, it comprises the foaming chamber be made up of with the pretreated pretreater of salt solusion moisture balance and the saturator for producing saturated moist air on moisture balance pre-service basis the gas provided for realizing source of the gas, the calibration chamber be connected with foaming chamber, simultaneously, in saturator, being also provided with microporous foam head and the first temperature sensor for detecting salt solusion temperature, in calibration chamber, being provided with the second temperature sensor for testing calibration room temperature.The crucial part of the present invention is the calibration cell vibrational power flow that instead of with temperature sensor in the past all saturated salt solution humidity generators, the pneumatic type saturated salt solution humidity generator of calibration cell is not needed to have volume little, be easy to carry, efficiency is high, as long as thermometric accuracy is enough high, can really accomplish reappear saturated salt solution humidity true value, to environment for use without features such as particular/special requirements.
Accompanying drawing explanation
The pneumatic type saturated salt solution humidity generator structural representation one that Fig. 1 provides for the embodiment of the present invention;
The pneumatic type saturated salt solution humidity generator structural representation two that Fig. 2 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing of the embodiment of the present invention, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
Unless otherwise defined, technical term used herein or scientific terminology should be in field belonging to the present invention the ordinary meaning that the personage with general technical ability understands." first ", " second " that use in patent application specification of the present invention and claims and similar word do not represent any order, quantity or importance, and are only used to distinguish different ingredients.Equally, the similar word such as " " or " " does not represent restricted number yet, but represents to there is at least one." connection " or " being connected " etc. similar word be not defined in physics or the connection of machinery, no matter but can comprise electric connection, be direct or indirectly." on ", D score, "left", "right" etc. only for representing relative position relation, when be described object absolute position change after, then this relative position relation also correspondingly changes.
As shown in Figure 1, embodiments provide a kind of pneumatic type saturated salt solution humidity generator, it specifically can comprise foaming chamber 1, calibration chamber 2 and some air guide elements etc.
Wherein, foaming chamber 1 is connected by air guide element 31 with calibration chamber 2, and the saturated salt solution gas that foaming chamber 1 generates enters calibration chamber 2 by air guide element 31.
In the embodiment of the present invention, specifically can comprise in foaming chamber 1:
For realizing gas that source of the gas 4 provides and the pretreated pretreater 11 of salt solusion moisture balance;
For producing the saturator 12 of saturated moist air on moisture balance pre-service basis.
Pretreater 11 involved by the embodiment of the present invention and saturator 12, specifically can be closed structure and container, thus can guarantee that aqueous vapor equilibrium process can not be subject to the interference of external environment.When specifically assembling, air guide element is enough to be placed in pretreater 11 and saturator 12 through hermetically-sealed construction;
The first temperature sensor 5, first temperature sensor 5 be provided with in saturator 12 for detecting salt solusion temperature is immersed in the salt solusion of saturator 12, and is connected with the controller 6 be arranged at outside foaming chamber 12;
The second temperature sensor 7, second temperature sensor 7 be provided with in calibration chamber 2 for testing calibration room temperature is connected with controller 6;
Controller 6, for the salt solusion temperature detected based on the first temperature sensor 5, determine the relative humidity that described salt solusion temperature is corresponding, and based on described salt solusion temperature and relative humidity corresponding to described salt solusion temperature, determine in saturation vessel 12, the dewpoint temperature of saturated moist air when bubble leaves saturated salt solution; Controller 6, also for the calibration chamber temperature that detects based on the second temperature sensor 7 and described dewpoint temperature, calculates the relative humidity of the soft air in calibration chamber 2, to carry out the calibration of humidity sensor based on the rh value of the soft air in calibration chamber 2.
In one embodiment, pretreater 11 and saturator 12 specifically can be the container that structure is identical, transparent, have closed structure.
In one embodiment, pretreater 11 can be equipped with appropriate identical saturated salt solution (containing appropriate supersaturation Concentraton salt crystal) with in saturator 12.Saturated salt solution height meets the requirement that bubble exists the shortest time in the solution; More than liquid level must keep Suitable space, during to reduce bubble eruption, the solution spittle outputs to outside container with soft air.
In the embodiment of the present invention, pretreater 11 is connected by air guide element 32 with saturator 12, the first end of air guide element 32 is arranged at the top (specifically can as shown in Figure 1) along, gas fraction under the hermetically-sealed construction of pretreater 11, second end of air guide element 32 is arranged in saturator 12, second end of air guide element 32 is provided with microporous foam head 8, and microporous foam head 8 is immersed in the salt solusion of saturator 12.
In the embodiment of the present invention, microporous foam head 8 can produce enough little bubble.
Pretreater 11 connects source of the gas 4 by air guide element 33, and bottom the salt solusion that the first end of air guide element 33 is arranged at pretreater 11 (but do not hinder give vent to anger), the second end of air guide element 33 connects source of the gas 4.
As shown in Figure 1, in the embodiment of the present invention, the first end of air guide element 31 can be arranged at the top along, gas fraction under the hermetically-sealed construction of saturator 12, and the second end of air guide element 31 can connect the first end (bottom) of calibration chamber 2.
As shown in Figure 1, in the pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, air-flow is from source of the gas 4, according to direction shown in the dotted line with arrow in Fig. 1, enter pretreater 11 via air guide element 33, then enter saturator 12 via air guide element 32, the saturated moist air that saturator 12 exports is via air guide element 31, arrive calibration chamber 2, become tail gas after leaving calibration chamber 2 and discharge system.
The pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, rely on aerodynamic force, stir the saturated salt solution in two containers (pretreater 11 and saturator 12) and the supersaturation Concentraton salt crystal in solution (ensureing that salt crystal is dispersed in whole solution) simultaneously.Meet such condition, the embodiment of the present invention can ensure that solution is all saturated under any gas source condition and temperature is uniform.
In the technical scheme that the embodiment of the present invention provides, salt crystal is dispersed in whole solution, and with scheme described in list of references 1, technical scheme salt crystal being placed on " salt cage " or " salt bag " is completely different.Because scheme described in list of references 1 is placed on by salt crystal " salt cage " or " salt bag ", thus intercept fully contacting of salt crystal and solution, caused in scheme described in list of references 1 and occur the undersaturated state of salt solusion unavoidably.
And in the technical scheme that the embodiment of the present invention provides, because salt crystal fully contacts with liquid, stirred by aerodynamic force, the fully saturated of salt solusion can be realized, thus overcome the technological deficiency described in list of references 1 existing for scheme.
Simultaneously, microporous foam head 8 involved by the embodiment of the present invention is custom-designed, its bubble size produced is enough little relative to solution height, thus can ensure that in bubble, all gas and solution surface steam reach abundant balance (note: in this technological document in bubble lifecycle, for sake of convenience, " soft air having carried out having reached in abundant water-vapor exchange, bubble moisture balance with saturated salt solution is saturated moist air " is called for short; Obviously, " saturated moist air " that " saturated moist air " herein and standard define is distinguished and is: refer in particular to herein " with the moisture balance state of saturated salt solution ", and standard definition refers to " with the moisture balance state of pure water ").Therefore, the pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, under any circumstance all only needs a saturator 12 can produce satisfactory saturated moist air.This method for designing not only simplify structure, adds reliability, and is the most important guarantee of humidity generator accuracy.And in scheme described in list of references 1, the container of similar saturator 12 needs 2 to 5, and do not provide necessity explanation how determining concrete number.
Related algorithm involved by the embodiment of the present invention is theoretical, can realize, do not repeat them here based on the correlative theses content of inventor.
Microporous foam head 8 involved by the embodiment of the present invention, can directly enter from saturator 12 mouthfuls, soaks in the solution.Therefore, if find that the micropore in microporous foam head 8 has latch up phenomenon, easily can take out cleaning or clean with additive method from saturator 12.
The pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, the major part of water-vapor exchange amount is utilized to occur in the feature of water balance process mid-early stage, in pretreater 11, produce the bubble of size appropriateness, complete the task of most water-vapor exchange, therefore can alleviate the blockage of the micro orifice phenomenon in saturator 2 in microporous foam head 8.Its mechanism is described as follows: when the humidity of the gas humidity that source of the gas 4 provides lower than saturated salt solution, namely water-vapor exchange means that water evaporation, water evaporation result cause occurring supersaturation crystallization in the shallow top layer of solution; When in the micropore that this situation betides saturator 12 microporous foam head 8, partially crystallizable is deposited on micro-pore wall; Long time sedimentation, finally can cause micropore to block completely.Pretreater 11 already completes most water-vapor exchange task, therefore can greatly reduce the crystal deposition in saturator 12 in frothing head on micro-pore wall, also namely extend the plant maintenance cycle.The function and efficacy of pretreater 11 involved in the embodiment of the present invention is non-existent in the prior art.
At the pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, the first temperature sensor 5 for detecting salt solusion temperature is provided with in saturator 12, first temperature sensor 5 is immersed in the salt solusion of saturator 12, and is connected with the controller 6 be arranged at outside foaming chamber 1.
The first temperature sensor 5 involved in the embodiment of the present invention, object is as follows:
Object one: table look-up according to solution temperature and determine the nominal rh value of saturated salt solution.This is also that the application apparatus of all saturated salt solutions or humidity generator are required.Object two: the dewpoint temperature calculating saturated salt solution surface saturated moist air according to relative humidity and solution temperature.Theoretical according to humidity, air humidity both can be expressed as relative humidity, also can be expressed as dewpoint temperature; The constant humidity main manifestations of saturated salt solution is that relative humidity variations is little when the temperature is changed, and therefore, in textbook or physics and chemistry handbook, the humidity value of saturated salt solution all represents with relative humidity; Soft air is in transmitting procedure, and due to beginning terminal temperature, or path temperature difference can cause relative humidity different, but under " waterproof " prerequisite, the dewpoint temperature of soft air is constant all the time.According to above theory, the salt solusion temperature that the present invention records according to the first temperature sensor 5, and calculate saturated moist air dewpoint temperature by beginning, the impact of end and transmission path temperature variation, therefore also there is no need whole system to be placed in calibration cell.
Because the accuracy exporting the dewpoint temperature of soft air depends on solution temperature accuracy of measurement, so the first temperature sensor 5 accuracy requirement should be very high.This is different from application in the past.Even propose very high request to the first temperature sensor 5 accuracy, but replace constant temperature with thermometric, not only drastically increase the accuracy that generator exports soft air, the significance without the need to constant temperature is also: simplify structure, reduce volume and reduce costs; Can portable, be applied in scene or field; And the time getting rid of tail gas needs after saturated moist air leaves solution is almost depended in the response without the need to the humidity generator of constant temperature completely, can really accomplish " plug and play ".
Because the humidity sensor majority be calibrated represents with relative humidity, so, the present invention utilizes the second temperature sensor 7, namely the temperature sensor 7 in calibration chamber 2 is arranged at, record temperature in calibration chamber 2 (being called for short " dry-bulb temperature "), and calculate the relative humidity of " this locality " soft air by controller 6 according to thermometer in the dewpoint temperature of saturated moist air and calibration chamber." this locality " relative humidity in calibration chamber 2 is only had to be only the real with reference to humidity of calibration humidity sensor.
In pneumatic type saturated salt solution humidity generator of the present invention, from source of the gas 4 through foaming chamber 1 to the series connection gas circuit of calibration chamber 2, there is continuous atmospheric pressure gradient, therefore calibration chamber 2 must be uncovered.Uncovered calibration chamber 2 not only facilitates the impact of installing humidity sensor, not being subject to again ambient humidity.
In the present invention one specific embodiment, as shown in accompanying drawing 1,2, the flowmeter 9 for detecting gas flow can be provided with in gas circuit of connecting with source of the gas 4.
In the embodiment of the present invention, can based on the flow of the source of the gas 4 shown by this flowmeter 9, to monitor the chocking-up degree of microporous foam head 8: remind user to need cleaning microporous foam head 8 when flow significantly declines.Flowmeter 9 is also for user selects " economic operation model " (large discharge that there is no need adds unnecessary solute excessive dissolution) to provide possibility.
As shown in accompanying drawing 1, Fig. 2, in the present invention one specific embodiment, air guide element 31 connect foaming chamber 1 and calibration chamber 2 between, serial connection an air strainer 10, for retain the overwhelming majority due to during bubble eruption with soft air export the solution spittle.
As shown in Figure 2, in the present invention one specific embodiment, pretreater 11, saturator 12, filtrator 10, first temperature sensor 5 and interconnected air guide element can be considered to be a complete foaming chamber 1.And in the pneumatic type saturated salt solution humidity generator that the embodiment of the present invention provides, multiple such foaming chamber 1 can be comprised, thus form foaming chamber group.
When configuring multiple described foaming chamber, the draft tube (air guide element 33) of the pretreater 11 in each foaming chamber 1 being provided with solenoid valve 13, and filling different salt solusions in different foaming chamber; Each foaming chamber has separately independently solenoid valve 13, first temperature sensor 5 to be connected with controller 6, is namely parallel relationship between multiple foaming chamber 1.
In accompanying drawing 2, the little rectangle frame 14 of dotted line is the reduced representation of foaming chamber, and 3 bullets are abridged foaming chamber.Being parallel relationship between foaming chamber, is series relationship between each foaming chamber and source of the gas 4, flowmeter 9, calibration chamber 2.At a time, only have some foaming chamber 1 to be chosen by controller 6 in system, after connecting with source of the gas 4, flowmeter 9 and calibration chamber 2, carry out humidity sensor calibration.
Condition that the embodiment of the present invention takes full advantage of " saturated salt solution gas and solution separable ", with in the scheme controlled described in source of the gas 4 path and a public calibration chamber 2(list of references 1, the not public calibration chamber of multiple humidity point) structural design, solve the natural sparse model between multiple humidity point.Select multiple humidity point, the gamut of relative humidity can be covered.The linking of gamut, multiple humidity point, not only has the result of use same with two-pressure method, can also have than two-pressure method humidity response faster.
As can be seen from the above, pneumatic type saturated salt solution humidity generator that the invention provides, that do not need calibration cell, comprising by for realizing the foaming chamber that gas that source of the gas provides and the pretreated pre-service of salt solusion moisture balance itself and the saturator for producing saturated moist air on moisture balance pre-service basis form, the calibration chamber be connected with foaming chamber, in saturator, being provided with microporous foam head and the temperature sensor for detecting salt solusion temperature, in calibration chamber, being provided with the second temperature sensor for testing calibration room temperature.The present invention is directed to the distinctive shortcoming of pneumatic type saturated salt solution humidity generator, the ie in solution spittle, and frothing head blockage of the micro orifice problem takes and is a series ofly proven effective measure.It is high that pneumatic type saturated salt solution humidity generator provided by the invention has precision, and aerogenesis is fast, and volume is little, is easy to carry, and the feature such as can work in the wild.
The above is only embodiments of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a pneumatic type saturated salt solution humidity generator, is characterized in that, comprising:
The foaming chamber connected by the first air guide element and calibration chamber, the saturated moist air that described foaming chamber generates enters described calibration chamber by described first air guide element;
Wherein, described foaming chamber comprises:
For realizing gas that source of the gas provides and the pretreated pretreating containers of salt solusion moisture balance;
For producing the saturation vessel of saturated moist air on moisture balance pre-service basis;
Be provided with the first temperature sensor for detecting salt solusion temperature in described saturator, described first temperature sensor is immersed in the salt solusion of described saturator, and is connected with the controller be arranged at outside described foaming chamber;
Be provided with the second temperature sensor for testing calibration room temperature in described calibration chamber, described second temperature sensor is connected with described controller;
Described controller, for the salt solusion temperature detected based on described first temperature sensor, determine the relative humidity that described salt solusion temperature is corresponding, and based on described salt solusion temperature and relative humidity corresponding to described salt solusion temperature, determine the dewpoint temperature of the saturated moist air that described saturator produces; Described controller, also for the calibration chamber temperature that detects based on described second temperature sensor and described dewpoint temperature, calculate the relative humidity of the soft air in calibration chamber, to carry out the calibration of humidity sensor based on the rh value of the soft air in calibration chamber.
2. pneumatic type saturated salt solution humidity generator as claimed in claim 1, is characterized in that:
Described pretreating containers and saturator are the container of closed structure, and described pretreating containers and saturator are built with same salt solusion;
The first end of described first air guide element is arranged at edge under the hermetically-sealed construction of described saturator, and the second end of described first air guide element connects the first end of described calibration chamber.
3. pneumatic type saturated salt solution humidity generator as claimed in claim 1, is characterized in that:
Described pretreater is connected by the second air guide element with saturator, the first end of described second air guide element is arranged at edge under the hermetically-sealed construction of described pretreater, second end of described second air guide element is arranged in described saturator, second end of described second air guide element is provided with microporous foam head, and described microporous foam head is immersed in bottom the salt solusion of described saturator.
4. pneumatic type saturated salt solution humidity generator as claimed in claim 1, is characterized in that:
Described pretreater connects described source of the gas by the 3rd air guide element, and the first end of described 3rd air guide element is arranged at bottom the salt solusion of pretreater, and the second end of described 3rd air guide element connects described source of the gas.
5. the pneumatic type saturated salt solution humidity generator as described in claim 1 or 4, is characterized in that, is in series with the flowmeter for detecting gas flow between described foaming chamber and source of the gas.
6. pneumatic type saturated salt solution humidity generator as claimed in claim 5, is characterized in that, comprise foaming chamber group in described pneumatic type saturated salt solution humidity generator;
Described foaming chamber group comprises the foaming chamber of multiple parallel connection.
7. pneumatic type saturated salt solution humidity generator as claimed in claim 6, it is characterized in that, the air source inlet place of each foaming chamber in described foaming chamber group is provided with the solenoid valve controlled by described controller.
8. pneumatic type saturated salt solution humidity generator as claimed in claim 6, it is characterized in that, be series relationship between described source of the gas, flowmeter, foaming chamber group, calibration chamber.
9. the pneumatic type saturated salt solution humidity generator as shown in claim 1, is characterized in that, the second end of described calibration chamber is uncovered.
10. the pneumatic type saturated salt solution humidity generator as shown in claim 1, is characterized in that, between the foaming chamber that described first air guide element connects and calibration chamber, is serially connected with filtrator.
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| CN201310336973.8A CN104345123B (en) | 2013-08-05 | 2013-08-05 | A kind of pneumatic type saturated salt solution humidity generator |
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| CN107525886A (en) * | 2016-06-16 | 2017-12-29 | 霍尼韦尔国际公司 | System and method for calibrating VOC detecting instrument |
| CN111220775A (en) * | 2020-01-20 | 2020-06-02 | 中国特种设备检测研究院 | Saturated or supersaturated flue gas moisture content measurement calibrating device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107525886A (en) * | 2016-06-16 | 2017-12-29 | 霍尼韦尔国际公司 | System and method for calibrating VOC detecting instrument |
| CN107525886B (en) * | 2016-06-16 | 2022-05-13 | 霍尼韦尔国际公司 | System and method for calibrating a volatile organic compound detection instrument |
| CN111220775A (en) * | 2020-01-20 | 2020-06-02 | 中国特种设备检测研究院 | Saturated or supersaturated flue gas moisture content measurement calibrating device |
| CN111220775B (en) * | 2020-01-20 | 2023-02-17 | 中国特种设备检测研究院 | Saturated or supersaturated flue gas moisture content measurement calibrating device |
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| CN104345123B (en) | 2016-06-22 |
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