CN109540966A - Dew point transmitter - Google Patents
Dew point transmitter Download PDFInfo
- Publication number
- CN109540966A CN109540966A CN201811612875.1A CN201811612875A CN109540966A CN 109540966 A CN109540966 A CN 109540966A CN 201811612875 A CN201811612875 A CN 201811612875A CN 109540966 A CN109540966 A CN 109540966A
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- China
- Prior art keywords
- dew point
- connector
- temperature sensor
- humidity sensor
- mechanical erection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 11
- 239000012535 impurity Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 241001274961 Rubus repens Species 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- -1 specifically Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
- G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of dew point transmitters, including mechanical erection connector, metal sleeve shell and electrical connector, humidity sensor and temperature sensor are provided with above the mechanical erection connector, the metal sleeve shell is internally provided with circuit board, MCU chip is provided on the circuit board, the humidity sensor and temperature sensor pass through draw pin and the circuit board is electrically connected.In the present invention, humidity sensor and temperature sensor measure the humidity value and temperature value of gas respectively, dew point value is obtained after MCU chip processing calculates, data-signal is exported by electrical connector again, the structure of whole device is simple, carries out the mode that data conversion calculates dew point value to the humidity value and temperature value measured, simplifies the structure of device, the requirement to hardware performance is reduced, so that production and application cost reduces.
Description
Technical field
The present invention relates to enviromental monitoring equipment technical fields, and in particular to a kind of dew point transmitter.
Background technique
Dew point, also known as dew-point temperature refer to that under fixed air pressure, vaporous water contained in air reaches in meteorology
It is saturated and condenses into the temperature being down to required for liquid water.In this temperature, the water of condensation floats to be known as mist and is stained in the sky
Then it is known as revealing when on the surface of solids, thus dew point of gaining the name.The measurement of dew point value is widely used in petrochemical industry, electric power, electronics, aviation boat
It, metallurgy and weaving etc. gas humidity is required in stringent industrial circle and process environments, with guarantee obtain high quality
Product or equipment are normally run.
In the prior art, it generallys use dew point hygrometer and directly measures the dew point value of gas, its working principle is that making a mirror
Face, which is in sample humid air, to cool down, and until the moment of dew drop dimly visible on mirror surface, measures mirror surface mean temperature, as dew point temperature
Degree.Its measurement accuracy is high, but the very high mirror surface of light requirement cleanliness, highly accurate temperature control system and the very high dew drop of sensitivity
Optical detection system, when use must make the pipeline for sucking sample air keep cleaning, and otherwise the impurity in pipeline will absorb
Or it releases moisture and causes measurement error.Therefore, the dew point hygrometer of the prior art is in the presence of structure is complicated, at high cost and measurement environment is wanted
Ask the problems such as high.
Summary of the invention
The purpose of the present invention is to provide a kind of dew point transmitters, to solve the above-mentioned problems in the prior art.
To achieve the above object, the present invention provides outside a kind of dew point transmitter, including mechanical erection connector, metal sleeve
Shell and electrical connector are provided with humidity sensor and temperature sensor, the metallic sheath above the mechanical erection connector
Cylinder shell is internally provided with circuit board, and MCU chip, the humidity sensor and temperature sensor are provided on the circuit board
It is electrically connected by draw pin and the circuit board.
It further, further include sintered filter, the top of the mechanical erection connector is arranged in the sintered filter,
The inside of the sintered filter is arranged in the humidity sensor and temperature sensor.
Further, the top of the metal sleeve shell is arranged in the mechanical erection connector, and the draw pin is successively worn
It crosses the sintered filter and mechanical erection connector and is electrically connected with the circuit board.
Further, substrate, the humidity sensor and temperature are provided between the humidity sensor and temperature sensor
Degree sensor is separately positioned on the two sides of the substrate.
Further, external screw thread is provided on the periphery of the mechanical erection connector.
Further, the bottom end of the metal sleeve shell is arranged in the electrical connector, and the electrical connector is two.
The beneficial effects of the present invention are:
The present invention provides a kind of dew point transmitter, including mechanical erection connector, metal sleeve shell and electrical connector,
Humidity sensor and temperature sensor, the inside setting of the metal sleeve shell are provided with above the mechanical erection connector
Have circuit board, be provided with MCU chip on the circuit board, the humidity sensor and temperature sensor pass through draw pin with it is described
Circuit board is electrically connected.Humidity sensor and temperature sensor measure the humidity value and temperature value of gas respectively, by MCU chip
Processing obtains dew point value after calculating, then is exported data-signal by electrical connector, and the structure of whole device is simple, to what is measured
Humidity value and temperature value carry out the mode that data conversion calculates dew point value, simplify the structure of device, reduce to hardware
The requirement of energy so that production and application cost reduces, while making the impurity in gas influence to subtract caused by accuracy of measurement
It is small, enhance applicability under various circumstances.
Specifically, the impurity in gas has been filtered out by sintered filter, has reduced impurity to humidity sensor and temperature
Spend the influence of sensor measurement accuracy；In such a way that humidity sensor and temperature sensor are separately positioned on substrate two sides,
Improve the range of measurement；By being easily installed whole device with externally threaded mechanical erection connector；By electrically connecing
Head provides power supply supply and signal output for device；Whole device has the advantages that compact-sized, small in size and good airproof performance.
Certainly, it implements any of the products of the present invention it is not absolutely required to while reaching above all advantages.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is schematic view of the front view of the invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1- mechanical erection connector, 2- metal sleeve shell, 3- electrical connector, 4- humidity sensor, 5- temperature sensor, 6-
Draw pin, 7- sintered filter.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Refering to Figure 1, the present embodiment is a kind of dew point transmitter, including mechanical erection connector 1, metal sleeve shell
2 and electrical connector 3, the top of mechanical erection connector 1 be provided with humidity sensor 4 and temperature sensor 5, metal sleeve shell
2 are internally provided with circuit board, and MCU chip is provided on circuit board, and humidity sensor 4 and temperature sensor 5 pass through draw pin 6
It is electrically connected with circuit board.
Humidity sensor 4 and temperature sensor 5 measure the humidity value RH and temperature value T of gas respectively, and MCU chip passes through wet
Angle value RH and temperature value T calculate dew point value Td, calculation formula is as follows:
Vapour pressure P is calculated according to formula (1) and (2) firstWS
T=temperature, unit K
Ci=coefficient
C0=0.4931359
C1=-0.46094295*10-2
C2=0.13746453*10-4
C3=-0.12743215*10-7
bi=coefficient
b-1=-0.58002205*104
b0=0.13914992*101
b1=-0.48640237*10-1
b2=0.41764767*10-4
b3=-0.14452092*10-7
b4=6.5459676
Then water vapor partial pressure P is calculated againW
Finally, calculating dew point value Td,
Wherein, B=6.1130, m=9.7912, Tn=273.49.
Calculated dew point value is exported by the RS485 communication chip being arranged on circuit board, then will be counted by electrical connector 3
It is believed that number being transferred to external equipment.
It further include sintered filter 7, the top of mechanical erection connector 1 is arranged in sintered filter 7, specifically, sintered
Filter 7 is columned cover structure, is offered thereon multiple for filtering out the pore of impurity in gas, humidity sensor 4
The inside of sintered filter 7 is set with temperature sensor 5, the impurity in gas has been filtered out by sintered filter 7, is reduced
Influence of the impurity to 5 accuracy of measurement of humidity sensor 4 and temperature sensor.
Substrate is provided between humidity sensor 4 and temperature sensor 5, humidity sensor 4 and temperature sensor 5 are set respectively
It sets in the two sides of substrate, specifically, substrate is vertically arranged, and the sensitive surface of humidity sensor 4 and temperature sensor 5 is respectively facing
The left and right sides, draw pin 6 are drawn downwards from the bottom of humidity sensor 4 and temperature sensor 5 respectively.
The top of metal sleeve shell 2 is arranged in mechanical erection connector 1, and draw pin 6 sequentially passes through the bottom of sintered filter 7
And mechanical erection connector 1 and with circuit board be electrically connected.
It is provided with external screw thread on the periphery of mechanical erection connector 1, humidity sensor 4 and temperature sensor 5 are protruded into dress
There is the inside of the equipment of under test gas, rotates mechanical erection joint 1, the fixed installation of finishing device.
The bottom end of metal sleeve shell 2 is arranged in electrical connector 3, by the grafting with outside line, mentions to whole device
Power supply source supply and signal output, electrical connector 3 are two.
To sum up, the present invention provides a kind of dew point transmitters, including mechanical erection connector 1, metal sleeve shell 2 and electricity
Gas connector 3, the top of mechanical erection connector 1 are provided with humidity sensor 4 and temperature sensor 5, the inside of metal sleeve shell 2
It is provided with circuit board, MCU chip is provided on circuit board, humidity sensor 4 and temperature sensor 5 pass through draw pin 6 and circuit
Plate is electrically connected.Humidity sensor 4 and temperature sensor 5 measure the humidity value and temperature value of gas respectively, at MCU chip
Reason obtains dew point value after calculating, then is exported data-signal by electrical connector 3, and the structure of whole device is simple, to what is measured
Humidity value and temperature value carry out the mode that data conversion calculates dew point value, simplify the structure of device, reduce to hardware
The requirement of energy so that production and application cost reduces, while making the impurity in gas influence to subtract caused by accuracy of measurement
It is small, enhance applicability under various circumstances.
Specifically, the impurity in gas has been filtered out by sintered filter 7, has reduced impurity to 4 He of humidity sensor
The influence of 5 accuracy of measurement of temperature sensor；Substrate two sides are separately positioned on by humidity sensor 4 and temperature sensor 5
Mode improves the range of measurement；By being easily installed whole device with externally threaded mechanical erection connector 1；Pass through
Electrical connector 3 provides power supply supply and signal output for device；Whole device has compact-sized, small in size and good airproof performance
Advantage.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, also do not limit the specific embodiment that the invention is only.Obviously, according to the content of this specification, can make
Many modifications and variations.These embodiments are chosen and specifically described to this specification, is original in order to better explain the present invention
Reason and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only authorized
The limitation of sharp claim and its full scope and equivalent.
Claims (6)
1. a kind of dew point transmitter, including mechanical erection connector, metal sleeve shell and electrical connector, it is characterised in that: institute
It states and is provided with humidity sensor and temperature sensor above mechanical erection connector, the metal sleeve shell is internally provided with
Circuit board is provided with MCU chip on the circuit board, and the humidity sensor and temperature sensor pass through draw pin and the electricity
Road plate is electrically connected.
2. dew point transmitter according to claim 1, it is characterised in that: it further include sintered filter, the sintering filtering
The top of the mechanical erection connector is arranged in device, and the humidity sensor and temperature sensor are arranged in the sintered filter
Inside.
3. dew point transmitter according to claim 2, it is characterised in that: the mechanical erection connector is arranged in the metal
The top of sleeve shell, the draw pin sequentially pass through the sintered filter and mechanical erection connector and with circuit board electricity
Property connection.
4. dew point transmitter according to claim 1, it is characterised in that: between the humidity sensor and temperature sensor
It is provided with substrate, the humidity sensor and temperature sensor are separately positioned on the two sides of the substrate.
5. dew point transmitter according to claim 1, it is characterised in that: be arranged on the periphery of the mechanical erection connector
There is external screw thread.
6. dew point transmitter according to claim 1, it is characterised in that: the electrical connector is arranged in the metal sleeve
The bottom end of shell, the electrical connector are two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612875.1A CN109540966A (en) | 2018-12-27 | 2018-12-27 | Dew point transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612875.1A CN109540966A (en) | 2018-12-27 | 2018-12-27 | Dew point transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109540966A true CN109540966A (en) | 2019-03-29 |
Family
ID=65857342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811612875.1A Pending CN109540966A (en) | 2018-12-27 | 2018-12-27 | Dew point transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN109540966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268930A (en) * | 2020-12-07 | 2021-01-26 | 广州奥松电子有限公司 | Dew point sensor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957624A (en) * | 2010-09-21 | 2011-01-26 | 南车株洲电力机车研究所有限公司 | Method and system for controlling air dehumidifier of current transformer of wind power generator |
| CN201837606U (en) * | 2010-11-03 | 2011-05-18 | 苏赋文 | Online monitor for dew point and density of sulfur hexafluoride |
| CN202330330U (en) * | 2011-12-14 | 2012-07-11 | 哈尔滨商业大学 | Gas dew point measuring device based on humiture detection |
| CN104062406A (en) * | 2014-07-04 | 2014-09-24 | 上海伦仕电子科技有限公司 | Moisture and density transmitter |
| CN205120638U (en) * | 2015-11-18 | 2016-03-30 | 浙江开关厂有限公司 | Gaseous humidity detection device of sulfur hexafluoride |
| CN205449850U (en) * | 2016-03-08 | 2016-08-10 | 成都约克仪器仪表有限公司 | Dew point changer |
| CN205941501U (en) * | 2016-07-28 | 2017-02-08 | 深圳市迈科智控科技实业有限公司 | Portable tuber pipe humidity transducer |
| CN207991746U (en) * | 2017-12-29 | 2018-10-19 | 李涛 | A kind of vacuum degree measuring equipment |
| CN209486026U (en) * | 2018-12-27 | 2019-10-11 | 上海伦仕智能科技有限公司 | Dew point transmitter |
-
2018
- 2018-12-27 CN CN201811612875.1A patent/CN109540966A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957624A (en) * | 2010-09-21 | 2011-01-26 | 南车株洲电力机车研究所有限公司 | Method and system for controlling air dehumidifier of current transformer of wind power generator |
| CN201837606U (en) * | 2010-11-03 | 2011-05-18 | 苏赋文 | Online monitor for dew point and density of sulfur hexafluoride |
| CN202330330U (en) * | 2011-12-14 | 2012-07-11 | 哈尔滨商业大学 | Gas dew point measuring device based on humiture detection |
| CN104062406A (en) * | 2014-07-04 | 2014-09-24 | 上海伦仕电子科技有限公司 | Moisture and density transmitter |
| CN205120638U (en) * | 2015-11-18 | 2016-03-30 | 浙江开关厂有限公司 | Gaseous humidity detection device of sulfur hexafluoride |
| CN205449850U (en) * | 2016-03-08 | 2016-08-10 | 成都约克仪器仪表有限公司 | Dew point changer |
| CN205941501U (en) * | 2016-07-28 | 2017-02-08 | 深圳市迈科智控科技实业有限公司 | Portable tuber pipe humidity transducer |
| CN207991746U (en) * | 2017-12-29 | 2018-10-19 | 李涛 | A kind of vacuum degree measuring equipment |
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| Title |
|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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