CN2042191U - High and low temp. test case for testing the temperature characteristics of loading sensor - Google Patents
High and low temp. test case for testing the temperature characteristics of loading sensor Download PDFInfo
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- CN2042191U CN2042191U CN 88215840 CN88215840U CN2042191U CN 2042191 U CN2042191 U CN 2042191U CN 88215840 CN88215840 CN 88215840 CN 88215840 U CN88215840 U CN 88215840U CN 2042191 U CN2042191 U CN 2042191U
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- casing
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Abstract
The utility model relates to a temperature-adjustable high-low temperature box for testing the temperature characteristics of a load sensor. The front part of the box body is provided with a plastic pressure head and a heat-insulated telescopic sleeve. A sensor to be tested is arranged between the plastic pressure head and the heat-insulated telescopic sleeve. A warming and cooling part is arranged at the rear part of the box body. Cold wind and warm wind are sent into the front part of the box body by an axial flow fan, and the temperature field is uniform. Only the front part of the box body is arranged in the directional pressure space of a standard force device. The utility model is also provided with a door, has the advantages of simple operation and high space utilization, can be used for make temperature tests of bulky sensors. The temperature range of a temperature box model machine can reach-10 DEG C to 60 DEG C, and can be expanded by adopting appropriate material and enlarging the power.
Description
The utility model relates to a kind of high-low temperature chamber that is used to examine and determine the adjustable temperature of load sensor temperature characterisitic.
Be the correct temperature characterisitic of estimating load sensor, require load sensor is put into the incubator of force standard machines, carry out humid test.No. 60 set point of temperature scopes of OIML international recommendation are-10 ℃-40 ℃, and China load sensor national metrological verification regulations JJG391-85 suggestion temperature range is-30 ℃-70 ℃, but allows to examine and determine with the temperature that is higher than lower limit.The federal physical technique research institute of West Germany (PTB) is direct-cooled directly-heated type in the high-low temperature chamber of the development seventies, this incubator is cylindric, inwall is equipped with the annular copper pipe that feeds circulating cooling medium, during test, underlay and sensor are put into from top, fill up copper scale again between sensor and casing, so that the temperature field evenly, its test temperature scope is-10 ℃-40 ℃.
(" ENTWICKLUNG EINER TEMPERATURKAMMER ZUR TEMPERIERUNG VON WAGEZELLEN FUR WAGEBEREICHE＞10t BEI TEMPERATUREN ZWISCHEN-10 ℃ Und+40 ℃ " MPeters, the 5th International Measurement Confederation's power of WWeiler und ASawla and quality meeting paper, 19749 Hungary) American Bureau of Standards (ABS) (NBS) also is direct-cooled directly-heated type in the incubator of the development eighties, refrigeration modes is the same with the PTB incubator, different is to pull air in the case with an instrument fan, replace copper scale to keep the temperature field evenly, its test temperature scope can reach-15 ℃-50 ℃ (" progress of NBS's dynamometry metering " RAMItchelI, the P107 of China Measuring Press's " the tenth International Measurement Confederation's power of latest developments 1 of electronic weighing technology and dynamometry metering and choosing of mass metrology meeting paper ") above-mentioned two kinds of incubators troublesome poeration when putting into or take out sensor, do homework and deal with problems arising from an accident work, because heating, the refrigeration part is in the same place with subjects, taking force measuring machine, to press to the power space big, it is little that current China force measuring machine is pressed to the power space, and the dynamometer actuator temperature test of doing larger volume has quite difficulty.
The purpose of this utility model is to avoid above-mentioned incubator shortcoming, provides a kind of force measuring machine that can effectively utilize to press to power space, adjustable temperature incubator easy and simple to handle.
High-low temperature chamber of the present utility model is made up of casing, well heater, cooling system and temperature control equipment.Cabinet shell is sheet iron or other sheet metal, and inner casing is a plastic board, and insulation materials such as middle filling foamed plastics constitute heat-insulation layer.The box house space can be arranged to forward and backward two parts, it is extraneous that the anterior roof of casing has movable plastics pressure head to lead to, adiabatic telescopic is equipped with in bottom, casing front portion, load sensor places between plastics pressure head and the adiabatic telescopic, and they play a part sealing incubator, isolation sensor and force standard machines.The casing rear portion is equipped with well heater, cooling system and axial flow blower, and well heater is made up of tubular heater and heat radiator; Cooling system is made up of condenser, evaporator, compressor and pipeline, and axial flow blower is blown into the casing front portion with cold wind or warm braw by flow deflector.Open the door in the casing front portion, so that put into and take out load sensor, this can be made up of external door, magnetic sealing strip and the transparent inside door that supplies to observe usefulness, and inside and outside door is provided with the passage of sensor lead, the mounting means of door can be hinge type, also can be laterally inserted formula.
When load sensor volume to be tested is big, also require bigger incubator, at this moment incubator can be made into the anterior and casing rear section of casing from form, connect with pipeline each other, cold wind or hot blast are blown into the casing front portion along air supply duct, and the anterior air of casing sucks the casing rear portion from air draft pipe.
Above-mentioned incubator casing front portion places the power of the pressing to space of force standard machines, and when insulation, incubator is closed, during dynamometry, the relevant component movement of force standard machines is lifted adiabatic telescopic, load sensor and plastics pressure head, and this moment, power can be added on the sensor exactly.During insulation or during dynamometry by the temperature of temperature control equipment control incubator.
High-low temperature chamber of the present utility model will heat, refrigeration partly is placed on the casing rear portion, have only the casing front portion to place force measuring machine to press to the power space, thereby space availability ratio is big, presses under the little situation in power space at China's force measuring machine, can do the bigger dynamometer actuator temperature test of volume; Incubator refrigeration type of heating is warm for air blast cooling wind, and the temperature field is even, frostless generation on the testee; Opening the door in the casing front portion, makes simple to operate, easy to use.The incubator of this structure is suitably changed on temperature range, also can be used for the occasion of other material temperature test.
Fig. 1 is the utility model structural drawing, wherein casing (5) is arranged to casing front portion (13) and casing rear portion (14), the anterior roof of casing has plastics pressure head (4), bottom that adiabatic telescopic (12) is housed, and have a door, this door is made up of external door (1), sealing strip (2) and transparent inside door (3), and the anterior rear wall of casing has flow deflector (6).The well heater that the casing rear portion is made up of tubular heater and heat radiator (7), axial flow blower (8) also have the cooling system of being made up of condenser (9), evaporator (10), compressor (11) and pipeline.Fig. 2 is a type that separates with casing rear portion (14) casing front portion (13), and (15) are air supply duct among the figure, and (16) are air draft pipe, and other parts at casing front portion and casing rear portion are arranged identical with Fig. 1, have just omitted here.
Adopt Fig. 1 structure to make one in the incubator model machine of 6KN force standard machines, temperature range be-10 ℃-60 ℃, and temperature evenly if adopt suitable material to make casing, is used more powerful compressor, also can further heat and reduce temperature, the expansion temperature range.
Carry out the test of the bigger dynamometer actuator temperature of volume, then can adopt Fig. 2 structure, make the anterior and casing rear section of casing from relatively large incubator.
On the lever force standard machines, as long as change the mounting means of department before the casing into laterally inserted formula by hinge type, just can open and close easily, put into or take out constant load sensor to be checked.
Claims (3)
1, a kind of high-low temperature chamber that is used to examine and determine the load sensor temperature characterisitic is made up of casing [5], well heater, cooling system and temperature control equipment, it is characterized by:
(1) the box house arrangement space is forward and backward two parts, it is extraneous that casing front portion [13] roof has movable plastic pressure head [4] to lead to, adiabatic telescopic [12] is equipped with in bottom, casing front portion, and the load sensor of pending humid test places between plastics pressure head and the adiabatic telescopic
(2) well heater, cooling system are concentrated and are placed in casing rear portion [14], and axial flow blower [8] is blown into the casing front portion with cold wind or hot blast by flow deflector [6],
(3) open the door in the casing front portion, and this door can be made of external door [1], sealing strip [2] and transparent inside door [3], and the mounting means of door can be hinge type, also can be laterally inserted formula.
2, high-low temperature chamber as claimed in claim 1 is characterized by casing front portion (13) and separates with casing rear portion (14), and cold wind or hot blast are blown into the casing front portion along air supply duct (15), and the anterior air of casing sucks the casing rear portion from air draft pipe.
3, a kind of high-low temperature chamber as claimed in claim 1 or 2 is characterized by the power of the pressing to space that casing front portion (13) places force standard machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88215840 CN2042191U (en) | 1988-11-04 | 1988-11-04 | High and low temp. test case for testing the temperature characteristics of loading sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88215840 CN2042191U (en) | 1988-11-04 | 1988-11-04 | High and low temp. test case for testing the temperature characteristics of loading sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2042191U true CN2042191U (en) | 1989-08-02 |
Family
ID=4848565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88215840 Expired - Lifetime CN2042191U (en) | 1988-11-04 | 1988-11-04 | High and low temp. test case for testing the temperature characteristics of loading sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2042191U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346067A (en) * | 2010-08-06 | 2012-02-08 | 南京三埃工控股份有限公司 | System for automatically testing temperature performance of weighing sensor |
| CN105233886A (en) * | 2015-10-22 | 2016-01-13 | 长春理工大学 | Window dehumidifying device of high-low temperature chamber |
| CN105301540A (en) * | 2015-09-21 | 2016-02-03 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Temperature effect measurement device for electro-optical sensing elements |
-
1988
- 1988-11-04 CN CN 88215840 patent/CN2042191U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346067A (en) * | 2010-08-06 | 2012-02-08 | 南京三埃工控股份有限公司 | System for automatically testing temperature performance of weighing sensor |
| CN105301540A (en) * | 2015-09-21 | 2016-02-03 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Temperature effect measurement device for electro-optical sensing elements |
| CN105301540B (en) * | 2015-09-21 | 2018-07-31 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Electric light sensing element temperature effect measuring device |
| CN105233886A (en) * | 2015-10-22 | 2016-01-13 | 长春理工大学 | Window dehumidifying device of high-low temperature chamber |
| CN105233886B (en) * | 2015-10-22 | 2017-06-16 | 长春理工大学 | High-low temperature chamber window dehydrating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |