CN117740199B - Automatic testing device for minimum embedded depth of temperature sensor - Google Patents
Automatic testing device for minimum embedded depth of temperature sensor Download PDFInfo
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- CN117740199B CN117740199B CN202410182115.0A CN202410182115A CN117740199B CN 117740199 B CN117740199 B CN 117740199B CN 202410182115 A CN202410182115 A CN 202410182115A CN 117740199 B CN117740199 B CN 117740199B
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000007654 immersion Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000002352 surface water Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000009529 body temperature measurement Methods 0.000 abstract description 9
- 239000002344 surface layer Substances 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000003550 marker Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101100165177 Caenorhabditis elegans bath-15 gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a minimum embedded depth automatic testing device of a temperature sensor, which belongs to the field of temperature measurement and comprises the following components: a constant temperature water tank; the fixed sleeve is used for mounting and supporting the temperature sensor to be measured; the bottom of the fixed sleeve is provided with a supporting member for supporting the bottom of the sensor; the automatic lifting module is used for driving the fixed sleeve to automatically lift in the constant-temperature water tank; the water circulation system is used for circulating the medium in the constant-temperature water tank and the fixed sleeve; the temperature control detection module is used for measuring the surface water temperature of the constant-temperature water tank; the data processing module is used for synchronously collecting the data of the temperature control detection module and the temperature sensor to control the surface water temperature of the constant-temperature water tank, synchronously collecting the lifting speed of the automatic lifting module to obtain the real-time immersion depth of the temperature sensor, and obtaining the minimum placement depth of the temperature sensor according to the temperature variation in the lifting process of the temperature sensor. The invention realizes the automatic test of the minimum placement depth of the temperature sensor.
Description
Technical Field
The invention belongs to the field of temperature measurement and metering, and particularly relates to an automatic testing device for the minimum insertion depth of a temperature sensor.
Background
According to the definition in the national standard GB/T30121-2013 industrial platinum thermal resistor and platinum temperature sensing element, the temperature sensor is placed in water with the temperature of at least 85 ℃ and the placement depth is the same as that of the tolerance acceptance test, and the temperature sensor terminal is made to approach to the room temperature. The temperature sensor is gradually pulled out from the water until the temperature sensor generates a temperature change of 0.1 ℃, and the placement depth at the moment is the minimum placement depth. In the production test industry of the temperature sensor, the temperature change amount generated by slowly pulling out the temperature sensor from the water can be customized according to the actual use requirement, but cannot be lower than the national standard, namely the temperature sensor is gradually pulled out from the water until the temperature sensor generates the temperature change of delta T (delta T is less than or equal to 0.1 ℃), and the placement depth at the moment is the minimum placement depth.
The minimum placement depth of the temperature sensor relates to the determination of the minimum installation depth of the temperature sensor in various practical application occasions, ensures that the temperature sensing part of the head of the temperature sensor is fully contacted with the part to be measured, and avoids the temperature measurement misalignment caused by heat leakage, thereby ensuring that the efficiency can be fully exerted in various different application places and realizing accurate temperature measurement.
At present, the minimum placement depth test of the temperature sensor can only rely on a manual hand-held mode to pull out the sensor from water, the temperature indication change of the temperature sensor is monitored in a manual visual mode in the pulling-out process, and after the temperature change of the temperature sensor reaches a preset change amount, the current sensor immersion position is determined by manual marking and the distance from the position to the sensor head is manually measured, so that the minimum placement depth is determined.
The manual operation has the following disadvantages: 1. only a single branch can be detected in each operation, and the efficiency is low; 2. the temperature sensor is pulled out from the water manually at uneven and uncontrollable pulling speed, which may cause insufficient heat transfer and not obtain real temperature change in the gradual pulling process of the sensor, thereby resulting in incorrect minimum insertion depth; 3. manually monitoring temperature changes is prone to error; 4. the distance from the manually-positioned sensor immersion position to the sensor head is easy to make mistakes and the measured result is rough, and the actual minimum implantation depth cannot be obtained. 5. The existing water bath equipment for immersing the temperature sensor is in an upper layer area close to an environment space, the axial temperature gradient (uniformity) is large, the temperature change of the temperature sensor in the pulling-out process is not completely caused by the temperature measurement characteristic of the sensor, but is partially caused by the large temperature uniformity and stability of the upper layer area of the water bath equipment, so that the characteristics of the sensor are influenced by shielding, and the wrong minimum implantation depth is obtained.
Disclosure of Invention
The invention aims to provide an automatic testing device for the minimum placement depth of a temperature sensor, so as to realize automatic testing of the minimum placement depth of the temperature sensor.
The technical solution for realizing the purpose of the invention is as follows:
An automatic test equipment for minimum insertion depth of temperature sensor, comprising:
An automatic test equipment for minimum insertion depth of temperature sensor, comprising:
a constant temperature water tank for providing a constant temperature field;
The fixed sleeve is used for mounting and supporting the temperature sensor to be measured; the fixed sleeve is of a hollowed-out structure, a supporting member is arranged at the bottom and used for supporting the bottom of the sensor, and a water circulation hole is formed in the supporting member so that a medium in the constant-temperature water tank can be in contact with the temperature sensor through the water circulation hole;
the automatic lifting module is connected with the fixed sleeve and used for driving the fixed sleeve to automatically lift in the constant-temperature water tank;
The water circulation system is used for circulating the medium in the constant-temperature water tank and the fixed sleeve so as to improve the uniformity of the temperature field;
the temperature control detection module is used for measuring the surface water temperature of the constant-temperature water tank so as to further control the water temperature of the constant-temperature water tank;
the data processing module synchronously collects the data of the temperature control detection module and the temperature sensor to be measured through the multi-path temperature collector so as to control the surface water temperature of the constant-temperature water tank; the data processing module is used for synchronously acquiring the lifting speed of the automatic lifting module so as to acquire the real-time immersion depth of the temperature sensor to be measured, and acquiring the minimum immersion depth of the temperature sensor to be measured according to the temperature variation in the lifting process of the temperature sensor to be measured.
Compared with the prior art, the invention has the remarkable advantages that:
(1) The temperature sensor is automatically lifted, the temperature variation measured by the temperature sensors is synchronously and automatically monitored and calculated in real time, the immersion depth of the temperature sensors is automatically obtained in real time, the relation between the temperature variation measured by the temperature sensors and the set threshold value is judged in real time, the manual operation is completely replaced, the manpower is liberated, the test efficiency is fully improved, and the gap in the field is filled.
(2) The rotating speed of the stepping motor is controlled through the pulse quantity output in unit time, so that the temperature sensor can be lifted at constant speed and uniform speed, uneven and uncontrollable pulling-out speed of the temperature sensor due to manual lifting is avoided, the fact that the sensor does not obtain real temperature change due to insufficient heat transfer in the lifting process is avoided, and further the error minimum placement depth is avoided.
(3) The temperature sensor bottom supporting member and the temperature sensor top fastening member are matched to be used so that the temperature sensor can be vertically fastened, vertical lifting is ensured, and accordingly accurate and reliable minimum implantation depth is obtained.
(4) Through setting up 2 accuse temperature and monitoring temperature sensor at the shallow surface region of constant temperature basin, both carry out temperature compensation, can reduce the influence of ambient temperature to the shallow surface temperature degree of consistency and the stability of constant temperature basin again to minimum, ensure that the self temperature measurement characteristic of being measured temperature sensor is not shielded to the true temperature variation of measurement, and then obtain accurate reliable minimum depth of putting into. The design of the constant temperature water circulation coil pipe and the constant temperature water pump fully improves the uniformity and the stability of the temperature of the shallow surface layer of the constant temperature water tank, and achieves the aim as described above.
(5) The heat exchange area of the temperature sensor is increased through the hollow structural design of the fixed sleeve, the through hole of the bottom dome groove structure and the dense water circulation hole at the lower end, so that the heat exchange effect is fully improved, the temperature sensor can measure accurate temperature change, and the accurate and reliable minimum placement depth is further obtained.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an automatic test equipment.
Fig. 2 is a schematic structural view of the fixing sleeve.
Fig. 3 is a schematic top view of the fixing sleeve.
Fig. 4 is a schematic view of the dome-shaped construction of the bottom arrangement of the support member.
Fig. 5 is a test flow chart.
In the figure: a controller 1; a stepping motor 2; a ball screw 3 and a slide rail 4; a nut pair 5; a slider 6; a rigid connecting rod 7; a data processing module 8; a multi-path temperature collector 9; a connection cable 10; a temperature sensor 11 to be measured; a skin temperature control sensor 12; a fixed sleeve 13; a circulating water pump 14; a constant temperature water tank 15; a temperature sensor limit mounting hole 16; a fastening member 17; a water circulation hole 18; a bottom support member 19; a connection hole 20; an initial immersion position marker 21; a groove 22; a through hole 23;
Detailed Description
The invention is further described with reference to the drawings and specific embodiments.
Referring to fig. 1, the automatic testing device for the minimum insertion depth of the temperature sensor in this embodiment includes a fixed sleeve 13, an automatic lifting module, a constant temperature water tank 15, a plurality of temperature collectors 9, a data processing module 8, a circulating water pump 14, and a constant temperature water circulation coil.
The fixed sleeve 13 contains a temperature sensor limit mounting hole 16, a water circulation hole 18, a bottom supporting member 19, a fastening member 17, and an initial immersion position mark 21.
Referring to fig. 2-4, the fixing sleeve 13 is used for fixing a plurality of temperature sensors to be measured, and the fixing sleeve 13 is provided with a connecting hole 20 for connecting the rigid connecting rod 7, and is connected with the automatic lifting module through the rigid connecting rod 7. In order to reduce the influence on the uniformity and stability of the temperature field of the constant-temperature water tank, the inside of the fixed sleeve 13 is designed by adopting a hollow structure, and a constant-temperature water circulation coil is laid on the outer surface of the fixed sleeve 13 in an embedded manner. The circulating coil pipe of the constant temperature water is laid in the interlayer of the outer surface of the fixed sleeve 13 and is used for passing the constant temperature water in the constant temperature water tank. The circulating water pump 14 is connected with the constant temperature water circulation coil pipe to form a water circulation system for pumping water in the constant temperature water tank 15 into the constant temperature water circulation coil pipe. The hollow structure design of the fixed sleeve 13, the laying of the constant-temperature water circulation coil pipe and the use of the water circulation pump 14 are all used for reducing the heat loss and the load influence of the fixed sleeve 13 when immersed in the constant-temperature tank as much as possible, ensuring that the constant-temperature water tank 15 has smaller temperature field uniformity and stability, avoiding the temperature measurement characteristic of the temperature sensor in the lifting process from being covered by the larger temperature field uniformity and stability of the constant-temperature water tank 15, and further obtaining the accurate and reliable minimum embedded depth. The temperature sensor limiting mounting hole 16 is used for placing the temperature sensor to be measured, as shown in fig. 3,4 hole sites with diameter phi 9mm are uniformly arranged on the fixed sleeve 13 with diameter phi 140mm, and 1 hole site with diameter phi 8mm is arranged at the center of the circle, so that 5 temperature sensors can be tested simultaneously. The fastening of the temperature sensor in the temperature sensor limit mounting hole 16 is realized by arranging a fastening member 17 at the top of the temperature sensor limit mounting hole 16 and arranging a supporting member at the bottom of the fixed sleeve 13 in a co-operation manner. The fastening member 17 is a fastening rubber plug with a conical structure, and the top fastening of the sensor is realized by screwing the fastening rubber plug into the temperature sensor limiting mounting hole 16; the bottom of the bottom supporting member 19 is of a dome-shaped structure corresponding to the position of the temperature sensor limiting mounting hole 16, a groove 22 with a depth of about 2mm and a diameter about 0.5mm larger than the diameter of the sensor is formed in the top of the dome-shaped structure and is used for supporting the bottom of the sensor, a through hole 23 with a diameter of 4mm (smaller than the diameter of the temperature sensor 11 to be measured) is formed in the bottom of the groove 22 and is communicated with water in the constant-temperature water tank 15, and the vertical distance between the inner surface of the bottom of the groove 22 and the lowest part of the supporting member is s 1. The temperature sensor 11 to be measured is inserted into the fixed sleeve 13 from the temperature sensor limit mounting hole 16 and supported on the groove 22. The water circulation holes 18 are densely arranged on the supporting member, so that the medium in the constant-temperature water tank can be contacted with the temperature sensor 11 through the water circulation holes 18, and the heat exchange area of the temperature sensor 11 is increased.
The design of the bottom supporting structure can ensure the vertical fastening of the temperature sensor, fully promote the heat exchange area of the constant temperature medium and the temperature sensor 11 to be measured, further promote the heat exchange efficiency, ensure that the temperature sensor can accurately sense and measure the actual temperature change when being lifted in the fixed sleeve 13, and further ensure the accurate acquisition of the minimum implantation depth. An initial immersion position marker 21 is provided on the stationary sleeve 13 for determining an initial immersion depth h 1 of the stationary sleeve 13 (initial immersion position marker is spaced apart from the bottom of the support member). The initial immersion depth of the temperature sensor is known to be (h 1-s1). The principle of determining the initial immersion position is that the initial immersion depth h 1 is not smaller than 10 times of the diameter of the sensor for measuring the temperature, so that the sensor temperature obtained at the initial immersion position is ensured to be accurate and reliable.
The constant temperature water tank 15 is used for providing a constant temperature field, and additionally is provided with 2 surface layer temperature control sensors 12 as a temperature control detection module in the shallow surface layer medium area of the constant temperature water tank, and is used for monitoring the shallow surface layer water area of the constant temperature water tank so as to realize temperature control and temperature compensation of the shallow surface layer medium area of the constant temperature water tank, when the shallow surface layer water temperature is reduced due to environmental influence, the surface layer temperature control sensors 12 are used for feeding back in real time, so that the constant temperature water tank heating system provides additional heat for temperature compensation, the influence of the environmental temperature on the uniformity and stability of the shallow surface layer temperature field is reduced as much as possible, the temperature measurement characteristic of the temperature sensor 11 to be measured in the lifting process is covered by the uniformity and stability of the temperature field of the large constant temperature water tank 15, and the accurate and reliable minimum embedded depth can be obtained. The 2 surface temperature control sensors 12 are simultaneously used for monitoring the surface temperature uniformity delta T b（ΔTb of the constant-temperature water tank, and the temperature difference value obtained by the two temperature sensors in real time is obtained). The effect to be achieved by the two surface temperature control sensors 12 in measuring the surface water temperature of the constant-temperature water tank 15 is that the surface temperature uniformity delta T b is less than 1/10 of the temperature variation set threshold delta T s, so that the shielding influence of the shallow surface temperature field uniformity on the inherent temperature measurement characteristic of the sensor is reduced to the greatest extent. 2 surface layer temperature control sensors 12 are connected to the multi-path temperature collector 9.
The automatic lifting module consists of a stepping motor 2, a ball screw 3, a sliding block 6, a nut pair 5, a sliding rail 4, a controller 1 and a rigid connecting rod 7. The stepper motor 2 is connected with the ball screw 3 through a coupler and is used for providing lifting power. The slider 6 moves up and down on the slide rail 4. The slide block 6 is connected with the nut pair 5. The ball screw 3 is used for converting the rotation motion of the stepper motor into the linear motion of the sliding block 6, and further realizes lifting by controlling the rotation of the stepper motor 2. The controller 1 is used for outputting pulse signals, and the rotating speed of the stepping motor 2 is controlled through the number of pulses output in unit time, so that the speed-controllable uniform lifting is realized. The rigid connecting rod 7 is used for connecting the sliding block 6 and the fixed sleeve 13, so as to realize automatic lifting of the fixed sleeve 13.
The multi-channel temperature collector 9 is connected with the temperature data of the plurality of temperature sensors 11 to be measured and the temperature data of the 2 shallow surface layer temperature control sensors 12 through the connecting cable 10 and is used for collecting the temperature data of the plurality of temperature sensors 11 to be measured and the temperature data of the 2 shallow surface layer temperature control sensors 12. The multipath temperature collector 9 integrates a plurality of identical independent temperature collection modules, and can realize millisecond-level temperature synchronous collection by synchronizing high-precision clocks of the independent temperature collection modules, so as to realize synchronous temperature collection of a plurality of temperature sensors, and further ensure that the minimum placement depth of the plurality of temperature sensors is synchronously obtained.
The data processing module 8 is connected with the automatic lifting module and the multi-path temperature collector 9, and is used for simultaneously collecting data of the automatic lifting module (acquiring the motor rotation speed) and the multi-path temperature collector 9, and calculating and obtaining the minimum placement depth of the temperature sensor 11 to be measured according to a preset temperature variation threshold value. The data processing module 8 is also used for monitoring and controlling the water temperature of the shallow surface of the constant-temperature water tank 15.
With reference to fig. 5, the operation of the automatic test equipment for minimum insertion depth of temperature sensor is as follows:
The fixed sleeve 13 is placed in the thermostatic bath 15 in an initial immersed position, where the initial immersion depth of the temperature sensor is as previously described (h 1-s1).
(1) The constant temperature water tank 15 is started, the temperature of the constant temperature water tank 15 is set, the temperature reaches the set temperature and is stable for not less than 10min, so that the measured temperature sensor 11 exchanges heat with the water tank sufficiently, and the accurate temperature is obtained. Meanwhile, the data processing module 8 collects the surface water temperature and the temperature uniformity of the constant-temperature water tank so as to control the surface water temperature of the constant-temperature water tank.
(2) The automatic lifting module is started, the number of pulses output by the controller 1 is set, the designated lifting speed v is set, and the fixed sleeve 13 is slowly lifted. The real-time immersion depth of the temperature sensor 11 being measured during lifting is (h 1-s1 -vt), where t is the time spent lifting.
(3) The automatic lifting module is started, meanwhile, the multi-path temperature collector 9 is started, temperature values T n of the multi-path temperature sensor 11 to be measured are synchronously collected, and the initial temperature is recorded as T n1 through the data processing module 8. The data processing module 8 records the real-time temperature T ni of the temperature sensor during the lifting of the fixed sleeve 13 and the immersion depth (h 1-s1 -vt) of the sensor during the lifting. The data processing module continuously calculates the absolute value of the difference between the temperature T ni of the temperature sensor and the initial temperature T n1 in real time, so as to obtain the temperature change quantity delta T in the lifting process, namely delta T=T ni-Tn1, continuously judges the magnitude relation between the delta T and the temperature change quantity setting threshold value delta T s in real time, and if delta T > delta T s occurs, the immersion depth h ti=h1-s1-v（ti-t0 at the moment (recorded as the moment T i and the initial moment T 0 of the lifting process) is the minimum placement depth h min.
Claims (5)
1. An automatic test device for a minimum insertion depth of a temperature sensor, comprising:
a constant temperature water tank for providing a constant temperature field;
The fixed sleeve is used for mounting and supporting the temperature sensor to be measured; the fixed sleeve is of a hollowed-out structure, a supporting member is arranged at the bottom and used for supporting the bottom of the sensor, and a water circulation hole is formed in the supporting member so that a medium in the constant-temperature water tank can be in contact with the temperature sensor through the water circulation hole;
the automatic lifting module is connected with the fixed sleeve and used for driving the fixed sleeve to automatically lift in the constant-temperature water tank;
The water circulation system is used for circulating the medium in the constant-temperature water tank and the fixed sleeve so as to improve the uniformity of the temperature field;
the temperature control detection module is used for measuring the surface water temperature of the constant-temperature water tank so as to further control the water temperature of the constant-temperature water tank;
The data processing module synchronously collects the data of the temperature control detection module and the temperature sensor to be measured through the multi-path temperature collector so as to control the surface water temperature of the constant-temperature water tank; the data processing module is used for synchronously acquiring the lifting speed of the automatic lifting module so as to acquire the real-time immersion depth of the temperature sensor to be measured, and acquiring the minimum immersion depth of the temperature sensor to be measured according to the temperature variation in the lifting process of the temperature sensor to be measured;
the fixing sleeve is internally provided with a plurality of mounting holes for mounting the temperature sensor to be measured, and is provided with a fastening member for fixing the temperature sensor to be measured;
The bottom of the supporting member adopts a dome-shaped structure corresponding to the position of the mounting hole, a groove for supporting the bottom of the sensor is formed in the top of the dome-shaped structure, and a through hole smaller than the diameter of the measured temperature sensor is formed in the bottom of the groove;
The fixed sleeve is also provided with an initial immersion position mark for determining the initial immersion depth of the temperature sensor fixed sleeve;
the process of the data processing module for obtaining the minimum imbedding depth of the temperature sensor to be measured is as follows:
Calculating the absolute value of the difference between the temperature T ni of the temperature sensor and the initial temperature T n1 in real time, so as to obtain the temperature change quantity delta T in the lifting process, judging the size relation between the temperature change quantity delta T and the temperature change quantity setting threshold value delta T s in real time, and when delta T > delta T s occurs, determining the immersion depth h ti=h1-s1-v（ti-t0) as the minimum placement depth;
Wherein h 1 is the initial immersion depth of the fixed sleeve; s 1 is the vertical distance of the inner surface of the bottom of the groove from the lowest part of the support member; v is the lifting speed of the automatic lifting module; t i is the time at which Δt > Δt s occurs; t 0 is the initial time of the lifting process.
2. The automatic test device for the minimum placement depth of the temperature sensor according to claim 1, wherein the temperature control detection module adopts two temperature control sensors for measuring the surface water temperature of the constant-temperature water tank and monitoring the surface temperature uniformity of the constant-temperature water tank.
3. The automatic test device for the minimum insertion depth of the temperature sensor according to claim 1, wherein the automatic lifting module is composed of a stepping motor, a ball screw, a sliding block, a nut pair, a sliding rail, a controller and a rigid connecting rod;
The stepping motor is connected with the ball screw through a coupler and is used for providing lifting power;
the sliding block performs lifting sliding on the sliding rail; the sliding block is connected with the nut pair;
The rigid connecting rod is used for connecting the sliding block and the fixed sleeve;
the controller is used for controlling the rotating speed of the stepping motor, so that the uniform lifting of the fixed sleeve is realized.
4. The automatic test equipment for the minimum placement depth of the temperature sensor according to claim 1, wherein the water circulation system comprises a circulating water pump and a constant-temperature water circulation coil;
The constant temperature water circulation coil pipe is laid in the interlayer of the outer surface of the fixed sleeve, and the circulating water pump is connected with the constant temperature water circulation coil pipe and used for pumping the medium in the constant temperature water tank into the constant temperature water circulation coil pipe.
5. The automatic minimum insertion depth testing device for temperature sensors according to claim 1, wherein a plurality of mounting holes of different sizes are formed in the fixing sleeve.
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| CN202410182115.0A CN117740199B (en) | 2024-02-19 | 2024-02-19 | Automatic testing device for minimum embedded depth of temperature sensor |
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| CN202410182115.0A CN117740199B (en) | 2024-02-19 | 2024-02-19 | Automatic testing device for minimum embedded depth of temperature sensor |
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