CN204228689U - A kind of easy humidity sensor calibration equipment - Google Patents
A kind of easy humidity sensor calibration equipment Download PDFInfo
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- CN204228689U CN204228689U CN201420667894.5U CN201420667894U CN204228689U CN 204228689 U CN204228689 U CN 204228689U CN 201420667894 U CN201420667894 U CN 201420667894U CN 204228689 U CN204228689 U CN 204228689U
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Abstract
The utility model relates to humidity sensor verification field, disclose a kind of easy humidity sensor calibration equipment, comprise humidification system, calibrating chamber, dehumidifier and standard atmosphere monitor, the mist pipe of described humidification system is fixedly connected with calibrating chamber by the connecting hole examining and determine chamber, dehumidifier is fixed on a side in calibrating chamber, the probe of standard atmosphere monitor is fixedly connected with calibrating chamber by the connecting hole examining and determine chamber, the probe of humidity sensor to be measured is fixedly connected with calibrating chamber by calibrating chamber connecting hole, and the connecting hole in cavity panel is all equiped with hermetic collar, the probe of mist pipe and humidity sensor to be measured and standard atmosphere monitor can be fixed.This portable calibration equipment, solve existing calibration equipment calibrating installation can only offline inspection, cannot field-checking shortcoming and in the electrical equipment that causes, moisture separating device humidity sensor cannot the problem of timing verification, there is the advantages such as easy to operate, verification speed fast, be easy to carry.
Description
Technical field
The utility model relates to humidity sensor verification field, particularly a kind of calibration equipment of humidity sensor.
Background technology
The numerical value that humidity value in air is industrial or agricultural, electronics, chemical industry and multiple scientific research environment are comparatively paid close attention to is the comfortable and scientific data important references index accurately of living environment.Such as, the requirement of some device to humidity value of transformer station is higher, the pith of first and second equipment is contacted in outdoor terminal box of transformer substation, power supply box Deng Shi transformer station, the safety and Health being directly connected to transformer station runs, but, affect by wet environment, power grid security accident happens occasionally, for ensureing the effective monitoring to equipment humidity environment, guaranteeing the accuracy measured, needing regularly to verify transformer station's moisture separating device.At present, transformer station extensively adopts the moisture separating devices such as well heater to drive tide dehumidifying to terminal box and power supply box.Humidity value uses humidity sensor in measuring more, and the calibration multiselect precise dew-point hygrometer of humidity sensor is as calibration criterion device, sensor is delivered to laboratory, put into standard humidity generator test cabinet, and the humidity calibration point needed for setting, by comparing the difference of the output valve of rh value measured by precise dew-point hygrometer and humidity sensor, and reach the object of calibration, but this calibrating installation can only offline inspection, cannot field-checking.And device structure is complicated, cost is high, uses inconvenience, can not adapt to the humidity sensor calibration requirements in complex environment flexibly.
Utility model content
Can only offline inspection for solving above-mentioned humidity sensor calibrating installation, use inconvenience, can not adapt to the problem of the calibration of humidity sensor in complex environment flexibly, the utility model provides a kind of and can use online, structure is relatively simple, easy to operate Portable temperature sensor calibration device.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of calibration equipment of easy humidity sensor, comprise humidification system 1, calibrating chamber 6, dehumidifier 9 and standard atmosphere monitor 10, the mist pipe 4 of described humidification system 1 is fixedly connected with calibrating chamber 6 by the connecting hole 7 in calibrating chamber 6, dehumidifier 9 is fixed on a side in calibrating chamber, the probe 18 of standard atmosphere monitor 10 is fixedly connected with calibrating chamber 6 by the connecting hole 7 in calibrating chamber, the probe of humidity sensor to be measured is fixedly connected with calibrating chamber 6 by calibrating chamber connecting hole 7, and the connecting hole 7 in cavity panel is equiped with hermetic collar, the probe of mist pipe 4 and humidity sensor to be measured and standard atmosphere meter can be fixed, described humidification system 1, comprise ultrasound wave high frequency atomizing piece 2, water tank 3, mist pipe 4, controller 5, the aqueous water in water tank forms water smoke under the effect of high-frequency ultrasonic, and water smoke enters calibrating chamber 6 via mist pipe 4, described dehumidifier 9 comprises chill surface 13, semiconductor refrigerating dehumidifying chip 14, heat sink 15, radiator fan 16, and dehumidifier 9 is fixed on calibrating chamber lateral surface, for the humidity in control verification cavity, to measure humidity value at a certain temperature, described standard atmosphere monitor 10,12 are formed by humiture probe 18, signal transmssion line 11, main frame, standard atmosphere monitor 10 and the Temperature Humidity Sensor be calibrated are positioned in the calibrating chamber of the same humidity environment under uniform temperature, measure some groups of correlative values within a certain period of time, can sensor to be tested be verified.
As a kind of preferred version, the side in calibrating chamber 6 has more than three connecting holes 7, connects humidification system 1, standard atmosphere monitor 10 and more than two humidity sensors to be measured respectively, realizes calibrating several humidity sensors simultaneously.
As a kind of preferred version, described calibrating chamber 6 is the rectangular parallelepiped constant temperature enclosures with heat-insulation layer be made up of organic plastic plate, and can reduce to examine and determine cavity inner temperature to the full extent affects by extraneous temperature, substantially realizes constant temperature and pressure in cavity.
As a kind of preferred version, calibrating chamber 6 comprises heat-insulation layer 17, coordinates dehumidifier 9 can make to keep constant temperature and pressure environment in cavity.
As a kind of preferred version, the calibrating back side, chamber 6 is provided with a rectangular window, and has corresponding scuttle, to realize, to not having the humidity sensor of popping one's head in verify, during calibration, sensor to be calibrated being put into rapidly calibrating chamber, and building scuttle.
The beneficial effects of the utility model are: humidity sensor calibration equipment of the present utility model is a kind of portable calibration equipment, solve existing calibration equipment calibrating installation can only offline inspection, cannot field-checking shortcoming and in the electrical equipment that causes, moisture separating device humidity sensor cannot the problem of timing verification, there is the advantages such as structure is relatively simple, easy to operate, verification speed fast, be easy to carry.
Accompanying drawing explanation
Fig. 1 is the perspective view of a kind of humidity sensor calibration equipment of the utility model;
Fig. 2 is the cut-open view in a kind of humidity sensor calibration equipment calibrating of the utility model chamber;
In figure 1, humidification system; 2, ultrasound wave high frequency atomizing piece; 3, water tank; 4, mist pipe; 5, controller; 6, chamber is examined and determine; 7, connecting hole; 8, rectangular window; 9, dehumidifier; 10, standard atmosphere detecting device; 11, signal transmssion line; 12, main frame; 13, chill surface; 14, semiconductor refrigerating dehumidifying chip; 15, heat sink; 16, radiator fan; 17, heat-insulation layer; 18, pop one's head in.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, as Fig. 1, shown in Fig. 2, the calibration equipment of humidity sensor of the present utility model, comprise humidification system 1, calibrating chamber 6, dehumidifier 9 and standard atmosphere monitor 10, the mist pipe 4 of described humidification system 1 is fixedly connected with calibrating chamber 6 by the connecting hole 7 in calibrating chamber 6, dehumidifier 9 is fixed on a side in calibrating chamber, the probe 18 of standard atmosphere monitor 10 is fixedly connected with calibrating chamber 6 by the connecting hole 7 in calibrating chamber, the probe of humidity sensor to be measured is fixedly connected with calibrating chamber 6 by calibrating chamber connecting hole 7, and the connecting hole 7 in cavity panel is equiped with hermetic collar, the probe of mist pipe 4 and humidity sensor to be measured and standard atmosphere meter can be fixed, described humidification system 1, comprise ultrasound wave high frequency atomizing piece 2, water tank 3, mist pipe 4, controller 5, after pouring a certain amount of water into toward the water tank of humidification system, start the power supply of humidification system, regulate mist amount controller, aqueous water in water tank forms water smoke under the effect of high-frequency ultrasonic, and water smoke enters calibrating chamber 6 via mist pipe 4, described dehumidifier 9 comprises chill surface 13, semiconductor refrigerating dehumidifying chip 14, heat sink 15, radiator fan 16, and dehumidifier 9 is fixed on calibrating chamber lateral surface, for the humidity in control verification cavity, to measure humidity value at a certain temperature, described standard atmosphere monitor 10,12 are formed by humiture probe 18, signal transmssion line 11, main frame, can according to different needs, select the reference value of Hygrothermograph as Comparability test of different accuracy, standard atmosphere monitor 10 and the Temperature Humidity Sensor be calibrated are positioned in the calibrating chamber of the same humidity environment under uniform temperature, measure some groups of correlative values within a certain period of time, can sensor to be tested be verified.
Concrete Comparability test process is:
1) first, each for instrument parts are connected, check that whether calibrating chamber 6 sealing is good.Start the humidification system 1 of instrument, the indicating value change of observation caliber humidity temperature monitor 10, humidification is stopped when rh value rises to about 90%, rapidly humidity sensor to be calibrated probe is connected with calibrating chamber, after its stable 10min minute, record standard humidity temperature monitor 10 and hygroscopic test value to be calibrated, then, every the rh value I of about 2min record standard humidity temperature monitor 10
mark(%RH) and the output valve I of device to be calibrated
show(%RH), record 3 data altogether, the test of 90% humidity point can be completed.
2) start dehumidifier 9, cavity is dehumidified, when the humidity value of standard atmosphere monitor 10 is shown as about 80%, stop dehumidifying, after stablizing 10min minute, then, every the rh value I of about 2min record standard humidity temperature monitor 10
mark(%RH) and the output valve I of device to be calibrated
show(%RH), record 3 data altogether, the test of 80% humidity point can be completed.
3) by step 2) method of operating successively 60%, 40%, 20% humidity point is calibrated, all tests can be completed.
4) calculate the mean value of the output valve of device to be calibrated under each calibration point, and press formula △ I=I
mark-I
showcalculate the modified value of each calibration point, evaluate the class of accuracy of humidity sensor to be calibrated.
Claims (8)
1. an easy humidity sensor calibration equipment, comprise calibrating chamber (6) and standard atmosphere monitor (10), it is characterized in that: also comprise humidification system (1) and dehumidifier (9), described dehumidifier (9) is fixed on a side of calibrating chamber (6), humidification system (1), standard atmosphere monitor (10), humidity sensor to be measured is connected with examining and determine chamber (6) by the connecting hole (7) in calibrating chamber, described standard atmosphere monitor (10) comprises probe (18), signal transmssion line (11) and main frame (12).
2. humidity sensor calibration equipment according to claim 1, it is characterized in that: the probe of the mist pipe (4) of described humidification system (1), the probe (18) of standard atmosphere monitor (10), humidity sensor to be measured is fixedly connected with examining and determine chamber (6) by calibrating chamber connecting hole (7), connecting hole (7) in cavity panel is all equiped with hermetic collar, can fix the probe of mist pipe (4) and humidity sensor to be measured and standard atmosphere monitor.
3. humidity sensor calibration equipment according to claim 1, it is characterized in that: described humidification system (1) comprises ultrasound wave high frequency atomizing piece (2), water tank (3), controller (5), aqueous water in water tank (3) forms water smoke under the effect of high-frequency ultrasonic, and water smoke enters calibrating chamber (6) via mist pipe (4).
4. humidity sensor calibration equipment according to claim 1, it is characterized in that: described dehumidifier (9) comprises chill surface (13), semiconductor refrigerating dehumidifying chip (14), heat sink (15), radiator fan (16), dehumidifier (9) is fixed on calibrating cavity side, for regulating the humidity in cavity, to measure humidity value at a certain temperature.
5. according to the humidity sensor calibration equipment of claim 1,3 or 4 described in any one, it is characterized in that: the side in calibrating chamber has more than three connecting holes (7), connect humidification system (1) respectively, calibrate humidity temperature monitor (10) and more than two humidity sensors to be measured, realize calibrating several humidity sensors simultaneously.
6., according to the humidity sensor calibration equipment of claim 1,3 or 4 described in any one, it is characterized in that: described calibrating chamber (6) is the rectangular parallelepiped cavity be made up of organic plastic plate.
7. according to the humidity sensor calibration equipment of claim 1,3 or 4 described in any one, it is characterized in that: described calibrating chamber (6) comprises heat-insulation layer (17), calibrating cavity inner temperature can be reduced affect by extraneous temperature, coordinate dehumidifier (9) can make to keep constant temperature and pressure environment in cavity.
8. according to the humidity sensor calibration equipment of claim 1,3 or 4 described in any one, it is characterized in that: calibrating chamber (6) back side is provided with a rectangular window, and has corresponding hermetyic window lid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667894.5U CN204228689U (en) | 2014-11-11 | 2014-11-11 | A kind of easy humidity sensor calibration equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667894.5U CN204228689U (en) | 2014-11-11 | 2014-11-11 | A kind of easy humidity sensor calibration equipment |
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| CN204228689U true CN204228689U (en) | 2015-03-25 |
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| CN201420667894.5U Active CN204228689U (en) | 2014-11-11 | 2014-11-11 | A kind of easy humidity sensor calibration equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330535A (en) * | 2014-11-11 | 2015-02-04 | 广西电网公司电力科学研究院 | Simple humidity sensor checking device |
| CN107991436A (en) * | 2017-11-22 | 2018-05-04 | 国家海洋局第海洋研究所 | Suitable for the one-touch humidity sensor field calibration system and method for deep ocean buoy |
| WO2019075882A1 (en) * | 2017-10-17 | 2019-04-25 | 深圳市国华光电科技有限公司 | Test system based on sensitivity of humidity sensor |
| CN110108320A (en) * | 2018-05-08 | 2019-08-09 | 国网湖南省电力有限公司 | Temperature and humidity calibration equipment and its method of calibration and heating moisture separating device |
| CN110501037A (en) * | 2019-09-16 | 2019-11-26 | 国网江苏省电力有限公司泰州供电分公司 | Power equipment Internet of Things Temperature Humidity Sensor verifies clamping device and method of calibration |
| CN110837265A (en) * | 2019-11-19 | 2020-02-25 | 国网四川省电力公司凉山供电公司 | On-spot atmospheric control device opens and stops calibration system |
-
2014
- 2014-11-11 CN CN201420667894.5U patent/CN204228689U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330535A (en) * | 2014-11-11 | 2015-02-04 | 广西电网公司电力科学研究院 | Simple humidity sensor checking device |
| WO2019075882A1 (en) * | 2017-10-17 | 2019-04-25 | 深圳市国华光电科技有限公司 | Test system based on sensitivity of humidity sensor |
| CN107991436A (en) * | 2017-11-22 | 2018-05-04 | 国家海洋局第海洋研究所 | Suitable for the one-touch humidity sensor field calibration system and method for deep ocean buoy |
| CN110108320A (en) * | 2018-05-08 | 2019-08-09 | 国网湖南省电力有限公司 | Temperature and humidity calibration equipment and its method of calibration and heating moisture separating device |
| CN110501037A (en) * | 2019-09-16 | 2019-11-26 | 国网江苏省电力有限公司泰州供电分公司 | Power equipment Internet of Things Temperature Humidity Sensor verifies clamping device and method of calibration |
| CN110501037B (en) * | 2019-09-16 | 2024-03-29 | 国网江苏省电力有限公司泰州供电分公司 | Verification clamping device and verification method for temperature and humidity sensor of Internet of things of power equipment |
| CN110837265A (en) * | 2019-11-19 | 2020-02-25 | 国网四川省电力公司凉山供电公司 | On-spot atmospheric control device opens and stops calibration system |
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