CN103727982B - Heat gun calibration steps - Google Patents
Heat gun calibration steps Download PDFInfo
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- CN103727982B CN103727982B CN201310743047.2A CN201310743047A CN103727982B CN 103727982 B CN103727982 B CN 103727982B CN 201310743047 A CN201310743047 A CN 201310743047A CN 103727982 B CN103727982 B CN 103727982B
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Abstract
The present invention relates to the technical field of heat gun, more specifically, relate to heat gun calibration steps.Heat gun calibration steps, wherein, comprise can temperature signal convert to the thermopair of thermopower signal, the temperature display meter for displays temperature, the stopwatch for computing time, for measuring the megohmmeter of insulation resistance, temperature display meter is connected with thermopair, comprises the following steps visual examination, electrical security inspection, the calibration of the temperature error of indication, temperature stability calibration, calibration result expression.Calibration steps of the present invention solves the problem of the measurement calibration method of heat gun, heat gun is effectively traced to the source, which solves the puzzlement of heat gun in measuring control, make heat gun can carry out measurement and calibration normally, the specification management of heat gun, fill up a blank of current heat gun calibration steps, specification, unified the measurement and calibration of heat gun, improve the accuracy of measurement.Meanwhile, carry out the measurement and calibration of heat gun, due to the widespread use of heat gun, huge economic benefit must be brought.
Description
Technical field
The present invention relates to the technical field of heat gun, more specifically, relate to heat gun calibration steps.
Background technology
The widespread use of heat gun.Heat gun is that a kind of hot blast utilizing the rifle core of heating resistance wire to blow out carries out welding and the instrument winning element to element, and primarily of air pump, anemostat, linear circuit plate, handle, the basic modules such as shell are formed.Heat gun mainly contains high speed heat gun, constant temp. heating air pressure gun, digital display heat gun etc., it is one of important tool of Maintenance communication equipment, the technological requirement used is very high, can be widely used in the fields such as oil, chemical industry, machinery, mining, metallurgy, five metals, electronics, food.
At present, the calibration of heat gun does not have can the country of reference or local code, specification, does not also have the standard of industry can refer to.The calibration steps research of heat gun is almost blank in metering industry, and the calibration of heat gun also seems extremely lack of standardization.Carry out the test of heat gun, be conducive to the major influence factors finding heat gun error, thus find the experimental basis writing heat gun calibration steps.
Summary of the invention
The present invention, for overcoming at least one defect described in above-mentioned prior art, provides heat gun calibration steps, and its method step is simple, improves the accuracy of measurement and calibration, can apply widely.
First, heat gun calibration steps mainly comprises following test data:
The temperature error of indication: heat gun at steady state, the difference of displays temperature mean value with standard means and the ratio of standard means.
Temperature stability: heat gun at steady state, in predetermined time interval, the ratio of the maximum variable quantity of measured temperature and the mean value of measured temperature.
For solving the problems of the technologies described above, the technical solution used in the present invention is: heat gun calibration steps, comprise can temperature signal convert to thermopower signal thermopair, the temperature display meter for displays temperature, the stopwatch for computing time, for measuring the megohmmeter of insulation resistance, temperature display meter is connected with thermopair.Described heat gun temperature range is (50 ~ 600) DEG C, and heat gun is provided with temperature indicating device.
In the present invention, thermopair (thermocouple) is temperature element conventional in temperature measuring instrument, its direct measuring tempeature, and temperature signal is converted to thermopower signal, is converted to the temperature of measured medium by electric meter (secondary instrument).In this programme, thermopair is the one-level thermopair of energy meet volume range request, and temperature display meter is not less than 0.1 grade, and the range of megohmmeter is 500V.
Heat gun is provided with temperature indicating device, can be seen the read temperature of heat gun, and in test process, temperature display meter can show the standard value of heat gun by temperature indicating device.
Heat gun calibration steps, wherein: comprise the following steps:
S1. visual examination: presentation quality inspection is carried out to heat gun;
Complete appearance, assembling is correct, and heat gun should indicate and make factory's title or trade mark, model, factory number, manufacture days, and the shape of handle should ensure to grip comfortable, and do not have the defect such as burr, crackle, and heat gun wind blowing gun head should join a support.
S2. electrical security inspection: measure the insulation resistance between heat gun attaching plug phase line and earth terminal with megohmmeter; Insulation resistance between heat gun power supply terminal and shell >=20M Ω.
S3. temperature error of indication calibration: temperature correction point selection, wherein, calibration point should be uniformly distributed in usable range, is generally higher limit, lower limit and intermediate point.Also can need to select calibration point according to user.
Heat gun is arranged on heat gun calibrating installation, air outlet is k from tin dish position adjustment distance, temperature needed for setting, when melting completely as liquid state in scolding tin, and temperature starts reading after reaching steady state (SS), interval b reads once, read the standard value of heat gun indicating value and temperature display meter respectively, continuous reading three secondary data, get the mean value of three readings respectively as indicating value and standard value, indicating value is the heat gun temperature error of indication with the difference of standard value and the ratio of standard value, calculates by following formula:
In formula:
---the temperature error of indication;
---three temperature indicating value mean values, DEG C;
---three standard value mean values, DEG C;
Temperature stability is calibrated: after reading the standard value of first time temperature display meter display, per interval c reads a standard indicating value, reads n standard indicating value continuously; In read a n+1 data, the difference of maxima and minima is the degree of stability of heat gun temperature with the ratio of the mean value of standard value, calculates by following formula:
In formula:
---temperature stability;
---the temperature maximum recorded, DEG C;
---the temperature minimum value recorded, DEG C;
---the temperature averages recorded, DEG C.
S4. calibration result is exported.
In this programme, test is carried out under the following conditions:
Temperature: (15 ~ 30) DEG C, humidity :≤85%RH, supply voltage: 220V ± 5%, other condition: should exist without judder and corrosive gas around heat gun, room air without obvious flowing, without other influential thermals source except heat gun.
Further, in described step S3, the calibration of the temperature error of indication is calibrated with temperature stability and is carried out simultaneously.In described step S3, air outlet is from tin dish position adjustment distance for k is 1cm, and time b is 1min.Described time c is two minutes, and n is 6 times.By the value to above-mentioned data, can obtain the temperature error of indication and temperature stability accurately, test result is accurate.
Further, in described step S4, calibration certificate provided by the instrument and equipment through calibration, and the displays temperature error of indication, temperature stability on calibration certificate, can also provide calibration result uncertainty.
Further, after described step S4, can to resume classes standard to heat gun, accurate interval of resuming classes is no more than 1 year.
In this programme, the temperature error of indication: the temperature error of indication of heat gun is not more than ± 15%, temperature stability: the temperature stability of heat gun is not more than ± and 10%.If exceed above scope, can determine that heat gun is underproof product.
Compared with prior art, beneficial effect is: calibration steps of the present invention solves the problem of the measurement calibration method of heat gun, heat gun is effectively traced to the source, which solves the puzzlement of heat gun in measuring control, make heat gun can carry out measurement and calibration normally, the specification management of heat gun, has filled up a blank of current heat gun calibration steps, specification, unify the measurement and calibration of heat gun, improve the accuracy of measurement.Meanwhile, carry out the measurement and calibration of heat gun, due to the widespread use of heat gun, huge economic benefit must be brought.
Accompanying drawing explanation
Fig. 1 is method flow schematic diagram of the present invention.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.Describe position relationship in accompanying drawing only for exemplary illustration, the restriction to this patent can not be interpreted as.
As shown in Figure 1, heat gun calibration steps, wherein, comprise can temperature signal convert to thermopower signal thermopair, the temperature display meter for displays temperature, the stopwatch for computing time, for measuring the megohmmeter of insulation resistance, temperature display meter is connected with thermopair.Described heat gun temperature range is (50 ~ 600) DEG C, and heat gun is provided with temperature indicating device.
In the present embodiment, thermopair (thermocouple) is temperature element conventional in temperature measuring instrument, its direct measuring tempeature, and temperature signal is converted to thermopower signal, is converted to the temperature of measured medium by electric meter (secondary instrument).In this programme, thermopair is the one-level thermopair of energy meet volume range request, and temperature display meter is not less than 0.1 grade, and the range of megohmmeter is 500V.
Heat gun is provided with temperature indicating device, can be seen the read temperature of heat gun, and in test process, temperature display meter can show the standard value of heat gun by temperature indicating device.
Heat gun calibration steps, wherein: comprise the following steps:
S1. visual examination: presentation quality inspection is carried out to heat gun;
Complete appearance, assembling is correct, and heat gun should indicate and make factory's title or trade mark, model, factory number, manufacture days, and the shape of handle should ensure to grip comfortable, and do not have the defect such as burr, crackle, and heat gun wind blowing gun head should join a support.
S2. electrical security inspection: measure the insulation resistance between heat gun attaching plug phase line and earth terminal with megohmmeter; Insulation resistance between heat gun power supply terminal and shell >=20M Ω.
S3. temperature error of indication calibration: temperature correction point selection, wherein, calibration point should be uniformly distributed in usable range, is generally higher limit, lower limit and intermediate point.Also can need to select calibration point according to user.
Heat gun is arranged on heat gun calibrating installation, air outlet is k from tin dish position adjustment distance, temperature needed for setting, when melting completely as liquid state in scolding tin, and temperature starts reading after reaching steady state (SS), interval b reads once, read the standard value of heat gun indicating value and temperature display meter respectively, continuous reading three secondary data, get the mean value of three readings respectively as indicating value and standard value, indicating value is the heat gun temperature error of indication with the difference of standard value and the ratio of standard value, calculates by following formula:
In formula:
---the temperature error of indication;
---three temperature indicating value mean values, DEG C;
---three standard value mean values, DEG C;
Temperature stability is calibrated: after reading the standard value of first time temperature display meter display, per interval c reads a standard indicating value, reads n standard indicating value continuously; In read a n+1 data, the difference of maxima and minima is the degree of stability of heat gun temperature with the ratio of the mean value of standard value, calculates by following formula:
In formula:
---temperature stability;
---the temperature maximum recorded, DEG C;
---the temperature minimum value recorded, DEG C;
---the temperature averages recorded, DEG C.
S4. calibration result is exported.
In the present embodiment, test is carried out under the following conditions:
Temperature: (15 ~ 30) DEG C, humidity :≤85%RH, supply voltage: 220V ± 5%, other condition: should exist without judder and corrosive gas around heat gun, room air without obvious flowing, without other influential thermals source except heat gun.
Further, in step S3, the calibration of the temperature error of indication is calibrated with temperature stability and is carried out simultaneously.In described step S3, air outlet is from tin dish position adjustment distance for k is 1cm, and time b is 1min.Described time c is two minutes, and n is 6 times.By the value to above-mentioned data, can obtain the temperature error of indication and temperature stability accurately, test result is accurate.
Further, in step S4, calibration certificate provided by the instrument and equipment through calibration, and the displays temperature error of indication, temperature stability on calibration certificate, can also provide calibration result uncertainty.
Further, after step S4, can to resume classes standard to heat gun, accurate interval of resuming classes is no more than 1 year.
In the present embodiment, the temperature error of indication: the temperature error of indication of heat gun is not more than ± 15%, temperature stability: the temperature stability of heat gun is not more than ± and 10%.If exceed above scope, can determine that heat gun is underproof product.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (7)
1. heat gun calibration steps, comprise can temperature signal convert to the thermopair of thermopower signal, the temperature display meter for displays temperature, the stopwatch for computing time, for measuring the megohmmeter of insulation resistance, temperature display meter is connected with thermopair, it is characterized in that: comprise the following steps:
S1. visual examination: presentation quality inspection is carried out to heat gun;
S2. electrical security inspection: measure the insulation resistance between heat gun attaching plug phase line and earth terminal with megohmmeter;
S3. temperature error of indication calibration: temperature correction point selection, heat gun is arranged on heat gun calibrating installation, air outlet is k from tin dish position adjustment distance, temperature needed for setting, when melting completely as liquid state in scolding tin, and temperature starts reading after reaching steady state (SS), interval b reads once, read the standard value of heat gun indicating value and temperature display meter respectively, continuous reading three secondary data, get the mean value of three readings respectively as indicating value and standard value, indicating value is the heat gun temperature error of indication with the difference of standard value and the ratio of standard value, calculate by following formula:
In formula:
---the temperature error of indication;
---three temperature indicating value mean values, DEG C;
---three standard value mean values, DEG C;
Temperature stability is calibrated: after reading the standard value of first time temperature display meter display, per interval c reads a standard indicating value, reads n standard indicating value continuously; In read a n+1 data, the difference of maxima and minima is the degree of stability of heat gun temperature with the ratio of the mean value of standard value, calculates by following formula:
In formula:
---temperature stability;
---the temperature maximum recorded, DEG C;
---the temperature minimum value recorded, DEG C;
---the temperature averages recorded, DEG C;
S4. calibration result is exported.
2. heat gun calibration steps according to claim 1, is characterized in that: in described step S3, and the calibration of the temperature error of indication is calibrated with temperature stability and carried out simultaneously.
3. heat gun calibration steps according to claim 1, is characterized in that: in described step S3, and air outlet is from tin dish position adjustment distance for k is 1cm, and time b is 1min.
4. heat gun calibration steps according to claim 1, is characterized in that: described time c is two minutes, and n is 6 times.
5. heat gun calibration steps according to claim 1, is characterized in that: in described step S4, and the instrument and equipment through calibration provides calibration certificate, the displays temperature error of indication, temperature stability on calibration certificate.
6. heat gun calibration steps according to claim 1, is characterized in that: after described step S4, can to resume classes standard to heat gun, and accurate interval of resuming classes is no more than 1 year.
7. heat gun calibration steps according to claim 1, is characterized in that: heat gun temperature range is (50 ~ 600) DEG C, and heat gun is provided with temperature indicating device.
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| CN106595960A (en) * | 2016-12-29 | 2017-04-26 | 广东鸿图科技股份有限公司 | Test method of accuracy and stability of differential pressure leakage detection equipment |
| CN109141585A (en) * | 2018-08-09 | 2019-01-04 | 安徽省锐凌计量器制造有限公司 | A kind of flow sensor that can improve accuracy of measurement |
| CN109238407A (en) * | 2018-08-09 | 2019-01-18 | 安徽省锐凌计量器制造有限公司 | A kind of Internet of Things big data acquisition processing system that can ensure accuracy |
| CN109141564A (en) * | 2018-08-09 | 2019-01-04 | 安徽省法米特物联技术有限公司 | A kind of accuracy of measurement method and device thereof improving flow sensor |
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| CN101026906A (en) * | 2006-02-21 | 2007-08-29 | 常州市英杰工具有限公司 | Hot air gun circuit device and its working method |
| CN103162419A (en) * | 2011-12-19 | 2013-06-19 | 西安广融电气有限公司 | Novel circuit device for heat gun |
| EP2677247A2 (en) * | 2012-06-18 | 2013-12-25 | Steinel GmbH | Handheld hot air device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070075154A1 (en) * | 2005-04-19 | 2007-04-05 | Advanced Precision Engineering | Methods and apparatus for processing expandable food materials |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026906A (en) * | 2006-02-21 | 2007-08-29 | 常州市英杰工具有限公司 | Hot air gun circuit device and its working method |
| CN103162419A (en) * | 2011-12-19 | 2013-06-19 | 西安广融电气有限公司 | Novel circuit device for heat gun |
| EP2677247A2 (en) * | 2012-06-18 | 2013-12-25 | Steinel GmbH | Handheld hot air device |
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| 高迪952-A型热风枪的功能改进;张玉民等;《北京工业职业技术学院学报》;20121031;第11卷(第4期);第9-12、39页 * |
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Address after: 511400 150, No. 8, Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Radio and TV Measurement and Testing Group Co.,Ltd. Address before: 510656 Guangdong city of Guangzhou province Whampoa Avenue Tianhe District Xiping Yun Road No. 163 Patentee before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. |
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