JB/T 9262-1999 Industrial glass thermometers and experimental glass thermometers
Some standard content:
ICS 17.200.20
Chinese Machinery Industry Standard
JB/T 9262--1999
Industrial Glass Thermometers and Laboratory Glass ThermometersLiquid -- in -- glass industrial thermometersandlaboratory thermometers1999-08-06 Issued
National Machinery Industry Weekly
2000-01-01 Implementation
JB.T $2621999
This standard is a revision of ZBY270-84, Industrial Hygrometers and Laboratory Glass Thermometers. This standard has no difference in content with ZBY27084, and the original standard has been modified: This standard replaces ZBY370-84 from the beginning of the experiment. This standard is proposed and approved by the National Industrial Measurement and Control Standardization Technical Committee. The main drafting unit of this standard is Beijing Glass Research Institute. The main drafters are: Li Biaosheng, Shang Xueda. 1 Specification
Machinery Industry Standard of the People's Republic of China
Industrial glass thermometers and laboratory glass thermometers JB/T9262-1999
2T0-84
This standard specifies the type, structure, installation requirements, test methods, inspection period and marking of industrial glass thermometers and laboratory glass thermometers (hereinafter referred to as thermometers, formerly known as industrial thermometers and laboratory hygrometers respectively). This standard applies to industrial and laboratory glass thermometers. 2 Referenced standards
The following standards contain clauses that constitute the clauses of this standard by being referenced in this standard. When this standard was published, the edition shown was valid. All parties using this standard should explore the possibility of using the latest version of the following standards. 913—19S5 Mercury
JB/T9329-~999 Instruments for transport, transportation and storage, basic environmental conditions and test methods 3 Definitions
3. Glass thermometer
Glass filled with temperature-sensitive liquid is placed next to the glass capillary phase, and the scale is located at or above the capillary phase, so the temperature can be read from the amount of liquid in the capillary phase.
3.2 Industrial variable temperature thermometer
Glass thermometer installed on engineering equipment (such as machinery, pipelines and containers) 3.3 Experimental variable temperature thermometer
Glass thermometers such as pressure thermometers are used in engineering experiments. According to their measurement accuracy, they are divided into special precision thermometers and ordinary glass thermometers. 3.4 Water-manganese glass thermometer
Glass thermometers used as temperature-sensitive liquids, 3.5 Organic micro-residue thermometers
3.6 Selective glass thermometer
A glass thermometer with a capillary tube and a temperature-sensitive bulb fused together, with a color mark engraved or printed on the glass surface. 3.7 Internal standard vertical glass thermometer
A glass thermometer with a capillary tube and a ladder plate tightly placed in a glass sleeve, with the capillary tube fused to the temperature-sensitive bulb. 3.8 Fluid
A glass thermometer located between the temperature-sensitive bulb and the glass thermometer. The chain body in the capillary snow can expand and contract with the temperature change. The commonly used temperature sensing substrates for the hygrometer are pumps, kerosene, acetylene and sheep.
3.9 Temperature sensing cell
The glass bulb filled with sodium temperature liquid is located at the bottom of the thermometer. 3.10 Capillary tube
Home Machinery Industry Quantity 1999-08-06 Approved
200001-01 Solid core
JB/T B262—1899
Glass tube with capillary holes, welded to the temperature-sensitive bulb. When the temperature changes, the temperature-sensitive liquid column moves up and down in the capillary holes. The capillary where the scale of the metrometer is located is called the capillary. 3.11 Radial band
The colored band on the back of the thermometer is used to facilitate reading. 3.12 Scale plate
The marking area on the internal standard type overflow meter is a straight colored (such as milky white) flat plate. 3.13 Sensing overflow column
The sensing liquid entering the capillary, referred to as the sparse column 3.14 Exposed liquid column
The liquid part outside the measured medium in the measurement process of the mixed pressure meter. 3.1 Intermediate bubble
The enlarged part of the inner diameter of the capillary, which is used to accommodate part of the temperature-sensitive liquid in order to shorten the scale length, increase the auxiliary scale or prevent the temperature-sensitive core from shrinking into the temperature-sensitive bubble when it does not drop to the specified temperature. The intermediate bubble is located at the lower or upper part of the main scale. 3.15 Safety bubble
The enlarged part of the inner diameter of the capillary. Its function is to prevent the thermometer from being damaged when the temperature exceeds its upper limit, and to facilitate the connection of the interrupted liquid barrier. 3.1 The capillary space above the highest scale of the thermometer is composed of the capillary tube and the safety valve above the highest scale line of the thermometer.
3.18 The top of the thermometer is sealed in a non-returnable manner. 3.19 Graduation lines
Lines engraved or printed on a scale plate or glass to indicate temperature values. They are divided into three types: rectangular lines, center lines and long lines. S.20 Graduation
Combination of scale lines, digits and measurement unit symbols (others). Other symbols are not used in scale scales. 3.21 Main scale
Marking of the solid part of the measurement range.
Auxiliary scale
Scale set for checking point indications. Also called flat point scale. 3.23 Grid spacing
The distance between the center lines of two adjacent scale lines.
3.24 Grid value
The difference in the indication values corresponding to two adjacent scale lines. 3.25 Upper [lower] limit
The nominal highest [lowest] value of the main scale (excluding the extension line part). 3.26 High [Low] Scale Line
The scale line on the scale that is at the highest [low] value. 3.27 Morning Scale
The scale line extending beyond the upper and lower limits. 3.28 Lithium Investment Line
The marking line used by the thermometer to indicate the wave setting position. 3.29 Check point
is the selected temperature point for checking the indication error of the thermometer. 3.30 Indication
is the deviation on the scale caused by the filter property of the thermometer. 3.31 Indication error
is the difference between the indication and the actual temperature value of the thermometer, that is: 999
Indication error = temperature - indication - actual value. 3.32 Correction value
in order to reduce the influence of current error on the measurement result, a quantity with the same value as the indication and opposite sign is added to the corrected value by algebraic method, that is: Correction value = -(indication error):
3.33 Point-up value
As the temperature gauge is used for a long time, the viscosity of the residual glass structure will cause the sensor to shrink, and the zero-point indication of the thermometer will rise permanently. The rising temperature is called the zero-point rise value. 3.34 Point-down value
When the thermometer is suddenly cooled to a high temperature after measuring, the elastic residual effect in the glass structure will cause the sensor to shrink and become wet, which cannot be restored to the state before use, causing the thermometer indication to temporarily drop. The dropped value is called the zero-point down value. 3.35 Compensation blanket qualitative
The specified temperature and the internal temperature of the thermometer are tested to ensure that the indicated value remains unchanged. The actual temperature rise and the internal temperature drop are measured by the specified test method to test the stability of its indicated value. 4 Type and structure
4.1 Type
Thermometers are divided into external type and internal standard type. The external type is shown in Figure 1. 4.2 Structure
The basic structure and names of each part of these thermometers are shown in Figure E. 4.3 Capping form
For external type thermometers, the capping form is shown in Figure 1, and for internal standard type thermometers, the capping form and the scale plate demarcation method are shown in Figure 5. Requirements
5.1 Overflow 5.2 When measuring the temperature of a medium with a thermometer, the following adjustment methods shall be adopted: a) The upper part of the thermometer is directly immersed in the medium, this method is called local adjustment, referred to as local adjustment, the industry or general experimental thermometer can be made into a local adjustment, and the high-intensity thermometer shall be corrected for the indication, see the appendix of the insulation resistance: b) The entire part of the thermometer is immersed in the medium, so that the surface of the thermometer and the surface of the medium are as close as possible to the same plane, this method is called full adjustment, referred to as full adjustment. Universal and precision experimental thermometers can be made into full adjustment. 5.3 The thermometer should be made of a material that meets the requirements of the standard and is processed to ensure that the resulting thermometer has the following special properties: The thermometer and other parts should be well annealed.There should be no internal stress concentration phenomenon: The temperature sensor should be properly processed to ensure that the temperature meter indication meets the requirements: The width of the mark and the clarity of the temperature sensing liquid should not be affected by crystallization or sleep. There should be no defects that affect the strength and bacterial count of the temperature sensor. 5.4 The temperature sensor should meet the following requirements: JB/T9262-1999! The thermometer is used to meet the requirements of G913; h) The thermometer is under normal pressure and the temperature filter should not evaporate or condense throughout its entire temperature measurement period; e) The sensor should be clean and not contaminated by the glass. When the filter cools, it should be cooled as soon as possible. If necessary, it should be colored with a dye that does not damage the glass, fade or precipitate.
Annular Ma
Spherical plan doctor
Inner standard type
1-- consider the range of the network with the main effect of the transport line height: 2-total length: 3-main standard length: 4--the distance from the wind resistance to the lower resistance height: 5-my ratio recording two: 6-the distance from the bubble to the lower limit of two; 7-energy type range length: 8-national shape for items; 9-full range: 10-degree garbage: 1-standard store: 12-bus: 13-lower room: 14-degree of beauty, 15-width range. Figure 2 Internal standard thermometer sealing form and standard flow plate diagram determination method The air above the column should be filled with a clean gas with sufficient pressure. Mercury thermometer should be filled with protective gas 5.6 Shape
The thermometer is straight, and its cross section is nearly circular. The lower body is an angular thermometer, and its shape meets the relevant approval regulations. Special pressure thermometers may not be nearly straight, and their cross sections may not be angular. 5.7 Seal
The seal of the internal thermometer can be made in the form of round, ring, pointed, special or twisted (see Figure 1). In addition to the seal of Figure 1, the internal thermometer can also be made according to the seal of National Standard 2. The outer diameter of the seal should not exceed the outer diameter of the thermometer. For industrial leakmeters made of soft, foamed plastics and paste, the seal should be firm and not powdery, and the cap should not be extruded from the stone. 5.8 Axle
JBT92621999
A milky white or other color gooseneck should be melted on the back of the thermometer. Its position should be: when the bar is aligned with the short scale line at the end, and when aligned with all scales and observed, the shaft should be behind the fall. For the upper limit of 300℃, it is allowed to have no bar
5.9 scale plate
The scale base plate of the internal standard thermometer should meet the requirements of the thermometer, and should be selected by appropriate methods. The thickness of the scale plate is 0.3mm-1.mm. The mark on the back should not be visible when observed from the front of the thermometer. The scale base plate is fixed. The gold wire and the capillary tube should be tied in the glass sleeve, with a distance of no more than !mm, and firmly fixed to the top of the thermometer (see Figure 2): 510 capillary
The capillary stack should be clean and free of conductive materials. The capillary should be flat and free of visual deformation, with uniform inner diameter and its cross-sectional area not exceeding 10% of the average. When the resistance is reduced by normal gradual increase, there should be no ether phenomenon on the surface. The cross-section of the capillary tube can be selected in the shape of a triangle or a triangle. When observed from the front, the triangle should have a good magnification effect. The following items shall be specified according to the following figures:
3.11 The safety bubble at the main part shall not be within the main mark range, and the change in the area of the capillary diameter measured shall not exceed the provisions of 5.10: Any enlarged part shall be at least Srm away from the corresponding calibration line. For taboos, the change in the transverse area of the capillary from the shortest line to the first image change above it shall comply with the provisions of 5.10: 5.2 The length of the capillary at the expansion part shall not be less than 1mm. The safety bubble shall be shaped and have a hemispherical top to connect the interrupted flow column.
hThe volume of the embedded tank should be able to accommodate the wet filter product when the temperature exceeds 60% of the upper limit. For the temperature range of 300℃ and above, no safety bubble is required.
5.13 Intermediate tank
! In order to set up auxiliary scale or even liquid-free and human-sensitive wet bubble, a long and large intermediate bubble is set below the main scale or above the temperature-sensitive bubble.
! When the user can set it in the tight temperature-sensitive single three-way, its volume should ensure that when the temperature drops to -30℃, the liquid is not sensed. The intermediate tank is set above [below] the main scale, and its distance from any scale key is not less than 5nmn; the lowest standard line of the main standard quality of the high-range bubble sparse room (the room humidity line for high-temperature sparse rooms). Lower limit = At 100℃, not less than 15mm; at 100℃ or below, not less than 20mm5.14 Dimensions of thermometers
Except for special thermometers, the following dimensions of thermometers shall be specified in the relevant standards of the source or meter. The following dimensions shall be specified in the relevant standards.
5.14.1 Overall length
The maximum length shall be specified.
5.14.2 Sensing length (see Figure 3)
The following dimensions shall be specified:
5.14. 3 times the tide mouth to record the lower mark avoidance line range when the meter center! -, when the scale is measured, this distance refers to the distance between each scale number and a solid line: the lower limit compensation is 10 above the temperature of the source meter
5.14.4 The lower limit of the bubble solid space
The minimum size is determined,
Not less than 102Gmm
Not less than
5.14.5 The main standard chicken length
Should be taken regularly.
5.14.6 Points Grid spacing
B/T9262
Figure 3 Bubble
Grid spacing is uniform, no visual observation of the cumulative amount of the absolute internal standard mercury hygrometer
Mobile mercury residual meter
Organic variable ratio hygrometer
5.14.72 The temperature of the temperature meter should not be less than 0.6mm!
Not less than 0.&ms
The local temperature meter should not be less than 75mm. The maximum and minimum dimensions of the outer diameter of the full-length tube of the industrial thermometer should be specified, and the outer diameter of the customer's bubble
should be smaller than the outer diameter of the thermometer body. 5.14.6 The outer diameter of the thermometer should be greater than the outer diameter of the thermometer body or the lower body. 5.14.9 The outer diameter of the thermometer should be smaller than the outer diameter of the thermometer body. The whole material is judged by the quality of the material, the quality of the capillary metal, and the ability to withstand the test. The metal should not be mixed with the material. www.bzxz.net
515 standard (Table 1)
m/T9262-1999
The scale line should be specified in the standards of various designs. The configuration of the three scale lines of short, medium and long is as follows: a! Thermometers with a grid value of 1, 0.0, 2 and 0.2℃: each of the ten scale lines has a long line: the middle of the two long lines is a medium line: the middle of each equal long line and the medium line is four short lines. b) Thermometers with a grid value of 2 and 0.2℃ can also be configured as follows: each of the five scale lines is a code: each of the two long lines is four short lines between.
! The grid values are 5 and 0.5°C. For a 10-bar oscillometer, each of the ten scales is a long line; between each two adjacent long lines are four medium lines; between each two medium lines or between the medium line and the long line is a short line. 5.17 Digital marking method (see 1)
The digital marking method should be specified in the standards of various instruments. Each of the ten scales should be marked with a number. When the grid value is 0.1, the marked numbers are in the order of; 1, 2, 3, etc.; when the grid value is 1, the marked numbers are in the order of: 10, 20, 30, etc.; when the grid value is 0.2°C, the marked numbers are in the order of: 2, 4, 6, etc.; when the grid value is 2, the marked numbers are in the order of: 20, 40, 60, etc.; when the grid value is 0.5, the marked numbers are in the order of: 5, 10, 15, etc.; when the grid value is 5%, the marked numbers are in the order of: 50, 100, 150, etc. The upper and lower limits of the temperature should be marked with full numbers. The marking method of the middle scale is shown in Table 1. 5.18 Scale Line Quality
) Scale lines should be clear, thick and thin, and the height should not exceed 1/5 of the grid spacing. When it is not greater than the work.15mm. The scale should be directly measured.
5] On the thermometer, when the thermometer is viewed vertically from the front, the left ends of all the marking lines should be on a vertical line [see Figure 4]. When the right side of the short line is aligned with the left side of the inner diameter of the capillary, all the middle and long lines should extend through the inner diameter of the capillary [see Figure 4!]. The length of the short line should be [-3] between the grids, and the length of the middle and long lines should be appropriately extended. TE
Figure 4 The number of the probe line and the digital position of the selective thermometer can be located to the left or right of the corresponding scale line, and its position is: extend the corresponding scale line, just aligned with the number or just below the number. The effective number can be marked in two forms: parallel or perpendicular to the capillary of the thermometer (see Table 1). () On an internal standard thermometer, when the thermometer is viewed vertically from the front, the capillary should be in the middle of the scale, the two sides should be roughly equal, and the numbers should be above their corresponding scale lines. The long line should be not less than 0.8 times the scale plate millimeter, and the middle line and short line should be approximately 0.6 and 0.4 of the long line respectively.
5.19 There should be a scaled line extending from the upper and lower limits of the scale line
, and its value should not be less than the allowable indication error. For this format, set the number of individual digits on each scale for free effect. Single digits for individual effect. (Re-entry) (Double release) JB/T 9282—1999 Note: a=.G6.F1: - scale.
Maiuinni
5.20 New scale
H/1 $282*999
For the zero point scale, there should be at least five scale lines between the upper and lower marks. 5.21 The internal thermometer should be marked with a permanent mark at the specified position. Its position should not exceed 1mm. If it is lower than the lower limit, it is a bad position. If it is away from the lower limit, it should be marked on the back of the mark. In addition to the internal thermometer, the internal humidity meter should indicate its immersion method on the scale. 5.22 Paint
The paint used for the marking lines, numbers and symbols should be bright in color and solid. 5.23 Inspection points: The inspection points of adjacent inspection points should be as specified in the table. The inspection points should include the upper and lower limits. The thermometer with zero point should include the zero point. Each thermometer should have no less than three inspection points. The middle point is generally selected on the long standard. For hygrometers with special requirements, the inspection points can be specified flexibly. 5.24 Indication error
The value tolerance limit of total floating moisture shall be as specified in Table 3, 3
Upper limit
-H0-60
- 60 - 4 - 30
- 30 - + 100
- 60 - ≤ - 36
3 100
>100 200
>200 -300
>300 -400
≥±00 -500
In the scene, the left side is the condition retention calculation, and the right side is the information communication benefit medical calculation 2. There is no "upper limit of product acceptance calculation" column. For the negative quantity calculation, the lower limit is included. c.5
3 When the quantity of the ancestral measurement is no longer away from the positive quality zone, it is shown according to the error limit.
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