JB/T 9461-1999 Technical requirements for moving tank mercury barometers
Some standard content:
ICS17.200.20
Machinery Industry Standard of the People's Republic of China
JB/T9461--1999
Specifications for the moring cistern mercury barometer1999-08-06Promulgated
National Machinery Industry Bureau
2000-01-01Implemented
JB/T 9461-1999
This standard is a revision of the technical specifications of ZB Y213-84 dynamic cistern mercury barometer. During the revision, according to the requirements of the State Regulations for Standardization Work Unit 1: Principles for the Drafting and Selection of Standards Part 1: Basic Requirements for the Preparation of Standards, the original standard was slightly revised, and the preface, conclusion (results) and instructions were added. Rate (use your standard), the main technical content has not changed since the date of implementation of this standard 121384 core mercury barometer This standard is compiled by Changrong Meteorological Instrument Research Institute, this standard drafting unit: Changrong Meteorological Instrument Factory The main drafter of this standard: Yu Ying,
This standard was first issued in 1984 with the departmental standard number JB736-65; the first revision in September 1983, and issued with the special standard number Z8Y213--84,
1 Scope
Machinery Industry Standard of the People's Republic of China
Moving cistern mercury barometer: Technical conditions
Specialions Far the rnoving cistern mercury barometer JB.T9461-1999
All versions are ZB Y213—B1www.bzxz.net
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and other contents of dynamic tank mercury barometers. This standard is used for animal and plant mercury barometer products (hereinafter referred to as animal mercury barometers). 2 Cited standards
The provisions contained in the following standards become the text of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB913—1985
JB.T9329—1999
3 Technical requirements
Basic environmental conditions and test methods for instruments and meters during transportation and storage 31 The measurement range of the meter is 810hPa-1070hPa, and it can work normally under the air temperature of -15℃-450℃. 32. The main technical performance parameters of the dynamic trough meter should meet the following requirements: 32.1 The indication value shall not exceed 0.4hP when normal.
3.2.2 After correction, the measurement error shall not exceed ±0.45Pa.3.3 The outer tube of the dynamic table shall meet the following requirements: 5.31 It shall be straight, smooth, uniform in thickness and continuous H62 single hard yellow woven board system 32 The front and rear window holes shall be half-line, straight, the upper and lower widths and the two window holes shall be consistent, and the center of the two arm holes shall be the same as the outer line - buy surface force 3.4 The measuring ruler shall be engraved on the outer tube and shall meet the following requirements: Requirements are as follows: 3.4. The scale error of the main scale in the whole process should not exceed ±0.07mm342 The scale should be engraved on the outer tube hole, and its range is 810ha-1070hPa. The scale line is 0.111334.3 The engraving should be shallow and clear, and the distance between the engravings should be uniform. The core lines every 5 and 10 should be lengthened and easy to distinguish. The edge of the engraved hole should be straight with the edge of the grid hole. 3.4.4 The position of each 10-degree position should be clear and evenly spaced, and the upper end of the multi-degree part should be in the unit of "hPambar×lo\ with the minimum scale value. 3.5 The vernier scale on the dynamic table should meet the following requirements: 3.5.1 The scale scale is corrected to 0.thPa. 3.5.2 The material and thickness of the material used should be the same as those of the main scale. 3.53 The scale and numbers on the vernier scale should be clear and solid, and the spacing between the scale lines should be consistent. The scale lines of 5 and 10 should be lengthened. All scale lines should be engraved to the edge of the vernier scale on one side of the main scale and be perpendicular to the vernier scale edge. 3.6 The inner tube glass of the dynamic table should be straight, without cracks and other defects that affect the bottom. There should be no stones, obvious air filaments, scratches, and other defects that affect the reading in the measuring line. Approved by the State-owned Machinery Industry Bureau on August 6, 1999, and January 1, 2000 Implementation
JB/9461—1999
3.7 The glass ball of the dynamic meter should be in a right cylindrical shape without cracks, and the observation surface should not have defects such as gas structure and cancer that affect the observation, and the two end surfaces should not be damaged.
3.B The inner tube of the dynamic meter should meet the following requirements when filled with water. 3.6.1 Under the condition of 101C gas reflection, when the dynamic meter is 45*, the diameter of the gas discharged from the inner tube should not be greater than 12ml3.8.2 There should be no gas pool and negative pressure on the contact part between the silver and the separation tube 3.9.3 When checking the water level, the mercury in the inner tube should be clean and straight, and symmetrical with the outer axis. When the silver surface moves, there should be no stickiness and no small droplets of mercury. 3. The finger of the front meter should meet the following requirements when filling water. 3.9. The blue water surface should be sharp and have little impurities. 3.9.2 The part connected with the child's medical device may have obvious impurities, dirt and color spots. Ticket: 5.0 The sliding scale of the dynamic meter should be in the individual. The internal and external pipes of the flexible pipes shall be on the same plane, and the pipes shall be able to rotate flexibly without any deformation.
3.11 The internal and external pipes of the flexible pipes shall be on the same plane, and the internal and external pipes of the flexible pipes shall be perpendicular to the zero line of the flexible pipes. 3.12 The thickness of the upper skin shall be uniform, flexible, and without any deformation. 3.13 The adjustment point of the thread shall be at the center of the skin, and shall be able to rotate flexibly during adjustment, and the skin shall not be twisted or 3.14 The surface of the zero reference should be smooth, clean, and free of defects, and should be on the left and right of the instrument. 3.15 The adjustment range of the zero reference surface adjustment mechanism should meet the requirements of the measurement standard. Under the pressure of 101% of the cabinet, the limit adjustment system should be adjusted downward. The inner opening should be 5mm below the mercury. The rear support should not touch the glass tube. The inner basket should be filled with water, and the air gap should be not less than three septa.
3.16 Parts and their joints in contact with water should not be free of mercury. 3.17 The accessories of the type meter (hereinafter referred to as the meter) should meet the following requirements. 3.17.1 The range of the thermometer scale is -16℃-+46℃, and the scale value is 0.5%. The pressure line and the number should be consistent and easy to read. 3.17.2 The error of the indication should not exceed ±0.5, and the limit should be included in the certificate. 3.1.3 The thermometer should be made of special glass, and there should be no defects such as soft bottom, bubbles, etc. that affect the reading and reading. The capillary should be completely exposed, and there should be a safety room in the north. 3.17.4 The calibration date of the thermometer should not exceed one day after the factory date of the thermometer. 3.18 The mercury used in the thermometer should meet the requirements of GB915 No. 1, and should be supplemented and purified. 3.19 The installation of the parts should be correct and in good condition. Under normal use conditions, there should be no looseness (the ring should rotate flexibly), deformation and other defects that affect the use.
3.20 The protective film of each component should be firm, uniform and bright, and should not have defects such as detachment and rust under normal use conditions. 4 Inspection method
4.1 The test chamber of 3.2.1 and 3.2.2 is the method
4.1.1 Requirements for the pressure chamber
No excavation in the room or nearby!
b) It shall not be directly exposed to sunlight or other large heat sources, and shall not be directly exposed to air. 4.1.2 Acid test equipment
) The cabinet should be folded flexibly and not covered, so that the temperature and air pressure inside and outside are consistent. The cabinet should be installed in the air pressure room far away from the door; there should be lighting inside to make the readings easier. 1) Standard air pressure instrument (hereinafter referred to as standard instrument) Accuracy: ±0.2hP; c] Air pressure accuracy: +[.ShPa,
4.1.3 Test requirements
Use Ning 941-1999
One variable standard gauge is used to compare four dynamic gauges at the same time:! The reading must be carried out after the instrument is hung on the base and stabilized for more than 4 days. When reading, the water must be kept stable and the upward trend must be consistent with the zero point and the vernier:
! At this point, the indoor pressure flashes, and the comparison readings of each meter are not less than times, and the interval between these times is not less than: when making comparative readings, the pressure change within 15 minutes should not exceed 0.15ha; the difference between any reading and the average difference should not exceed ±0.15F: If the reading exceeds 15F, the reading will be cancelled and one reading will be added. If the reading is more than two readings, two readings can be added:
) The readings of the standard instrument and the dynamic cabinet meter are accurate to more than 0.05hP:! Strictly pass the test and more than two people complete 4.1.4 Record the pressure reading of the standard instrument minus the dynamic meter pressure reading to obtain the required pressure, and calculate the average value;:! The correction value of the standard instrument can be added to the average value of the gas difference, that is, the correction value of the instrument is obtained. 4.23.14 Test method
Note: When the hand is under 1010nPa gas, when the setting screw reaches the lower extreme position, the basic full water version is compensated to the zero point. S.5 Acceptance criteria
5.1 Each dynamic meter should be factory inspected according to the requirements of 3.2.1, 3.3-3.20. 5.2 The factory test shall be retested in the following cases: When the test results are not satisfactory:
When the winding mechanism is retrogradely checked.
5.3 The result of the retest shall meet the requirements of this standard and the correction value shall not exceed 0.00 compared with the original test result. 5.4 The dynamic table shall be type tested in the following cases: When major changes are made in design, process and materials used: a) The dynamic table is not produced after re-production; d) The dynamic table is regularly inspected for batch production;
5.5 When the dynamic table is produced by the base model, at least three pieces shall be selected for type test. If one piece fails in the random inspection, it shall be double-checked. If there are still unqualified pieces in the subsequent inspection, the batch shall be unqualified. If two pieces in the random inspection do not meet the requirements, the batch shall be unqualified. In other cases, the number of parts to be tested for type testing shall be determined according to the specific circumstances. 6 Marking, packaging and storage
6.1 Each dynamic meter shall be engraved with the following information in the appropriate position: Manufacturer name:
) Product name and model:
cl Production serial number:
d Year and month of manufacture,
6.2 Each dynamic meter and its accessories shall be separately installed in the back sieve, and the instrument shall be fixed firmly in the back cylinder. The back cover shall be marked with: 1) Manufacturer name:
2) Product name:
} "Upward" And "handle with care" and other related signs. 6.3 The decay dynamic meter includes: a dynamic meter; a lifting plate; a fixed load; a back plate; a manual; a certificate; a calibration certificate. The dynamic meter should be stored in a room with a temperature of 10% to +4℃ and a relative humidity not exceeding 8D%. There should be no corrosive volatiles in the capsule. B.4
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