Some standard content:
Verification Regulation of Metrology of the People's Republic of China JJG 949—2000
Theodolite Veriflcation Device2000-02-14 Issued
Implementation on 2000-06-01
Issued by the State Administration of Quality and Technical Supervision
JJG 949
Verification Regulation of
Veriticatinn Regtatinn of
Veriticatim DeviceJJG 949—204H
This regulation was approved by the State Administration of Quality and Technical Supervision on February 14, 2001 and came into force on June 1, 2000.
Responsible unit: National Technical Committee on Geometric Angle Meters Drafting unit: The 34th Research Institute of Aviation Industry Corporation The technical text of this regulation shall be interpreted by the National Technical Committee on Geometric Angle Meters Main initiators of this regulation
Zhang Yuwen
Zhou Weihu
Fu Bianqing
Meng Jia Drafting persons
JJC 949--2000
(The 34th Research Institute of Aviation Industry Corporation) (The 34th Research Institute of Aviation Industry Corporation) (China Geophysical Research Institute)
(China Institute of Metrology)
(PLA Academy of Surveying and Mapping)
Scope·
Referenced documents·
Overview·
4 Meter display characteristics·
4.1 Appearance and interaction between components
JJC 9492000
Collimator and calibration resolution: collimator. Position of collimator sight clock.
Horizontal and vertical position of collimator dividing pole. Stability of calibration table.
4.6 Position of collimator sight clock.
Horizontal and vertical position of collimator dividing pole.
4.7 Straightness of collimator sight line.
4.8 Indexing error of gear indexing table.
4.9 Stability of horizontal angle calibration device.
4.10 Verification device for vertical angle.
5 Verification conditions.·||tt ||5.1 Environmental conditions
5.2 Verification tools and other equipment
G Verification items and methods...
Appearance and the interaction of various components
Collimator and collimator for inspection
6.4 Horizontal and vertical positions of collimator brush plate
6.5 Stability of the inspection platform...
6.6 High, medium and low vertical collimator positions
6.7 Straightness of collimator sight line
6.% Multi-tooth indexing indexing error 6.9 Stability of horizontal angle calibration device 6.10 Verification report of vertical angle 7 Processing of calibration results 8 Calibration cycle Appendix A Format of inner pages of calibration certificate 1 Scope JJG949—2000 Verification procedure for theodolite calibration device This regulation is applicable to the calibration of multi-day standard type and multi-dividing table type theodolite calibration device. 2 Reference documents JJG414—199 4
Calibration procedure for optical theodolite equipment"
JB/T7399-[994
National collimator"
JJG:472-1997
3 Calibration procedure for multi-tooth indexing table
There are two forms of theodolite calibration device: the multi-day mark calibration device uses 4-6 collimators (including directrix arms or directrixes) as infinite mark to form a constant angle in the horizontal and vertical directions; or the calibration device consists of a rate-tooth indexing table and a collimator. To calibrate the theodolite, such as the standard deviation of the measuring angle, the accuracy of the angle measurement and the correctness of the geometric relationship of the three axes. The principle diagram of the calibration device is shown in Figures 1 and 2. 2 Multi-tooth indexing table calibration device
1 Multi-standard type calibration device
1.-6... Parallel light: 7 light; 8 Focusing point 4 Metrological characteristics
4.1 Appearance and relative properties of each component
1 One-point indexing table: 2-outer section:
3 Angle standard transfer
4.1. The outer gauge should have no obvious mechanical damage, paint peeling, rust and other signs: During use, it is allowed to have external defects that do not affect the usability
4,1,2 The movable parts should be flexible, smooth and reliably locked when working. 4.1.3 The layout of the collimator should meet the requirements of JJ414-1994 for full-circle observation. The marking plates of each collimator should have bright and uniform illumination.
JJG 040—2000
4.1.4 The surface of the optical components should be free of water marks, oil marks, film peeling and other phenomena. 4.2 Collimator and collimator for resolution verification The collimator should meet the technical requirements of collimator in T7399--1994: Focal length of collimator for resolution verification 500t
4.3 Position of collimator axis
The reticle in the field of view of the collimator to be verified should be straight and the inflection point of the visual axis should pass through the center of the verification platform. The vertical line:
4.4 Position of horizontal and vertical lines of the reticle of the collimator The vertical line of the reticle should be plumb, with no visible tilt. The intersection of the horizontal half line and the vertical line of the reticle should be in the same horizontal plane. The deviation from the same horizontal plane should not exceed 5mm in the telescope.
4.5 Stability of the verification platform
After the verification platform is locked, there is no deflection at the bottom of the platform. 4.6 The vertical straight lines of the high, medium and low parallel light tubes should be in the vertical plane, and the vertical axis of the high, medium and low parallel light tubes should be visible in the vertical plane. The angle between them is 25° and the symmetry is <30°. 4.7 The straightness of the straight line of the standard line of the parallel light tube shall not greatly exceed the requirements of Table 1.
Horizontal standard deviation
Straightness
4.&Multi-tooth indexing table indexing error
Multi-tooth indexing table indexing error is not greater than the provisions of Table 2 Table 2
Horizontal and vertical standard deviation
Division error
4.9 Horizontal angle calibration device stability
Stability is less than the provisions of Table 3,
Horizontal standard deviation
Stability
Vertical angle calibration device
|tt||JJG949—2000
Stability of the calibration device, the uncertainty of the right angle measurement is not more than that in Table 4, Table 4
Standard deviation in horizontal direction
Standard deviation in measurement
5 Calibration conditions
5.1 Environmental conditions
Temperature: (20-5):
Indoor temperature change: 1t
Standard working room temperature balance time 24 5.2 Verification tools and equipment
Special image transfer prism set:
image level;
theodolite with a standard deviation of less than 1 in the horizontal direction: polyhedral prism of third grade (-0.5\:
Gauss eyepiece;
dynamometer.
Verification items and verification methods
6.1Appearance and mutual parts
daylight inspection, operation Test
6.2 Collimator and Verification Resolution Collimator 1
Newly manufactured collimator shall be verified according to the provisions of JB/T7399-1994 "Collimator". It is not necessary to verify it during use. 6.3 Position of the axis of the collimator
6.3.1 The T3 theodolite is mounted on the central verification platform. The instrument is accurately leveled, and the telescope is used to collimate the collimator reticle sun mark. The telescope focal length extension brush is adjusted. Plate H mark is clear gradually: then aim at it separately! Other collimators, Yao check all the scale plates and moon marks, which should be equally clear
TJG949-20
6.3.2 The extension line of the collimator standard output should pass through the rotation center of each. When the time is right, the theodolite can telescope on the calibration platform to illuminate the collimator scale plate moon mark, adjust the telescope focus, make the sun mark clear, aim at the scale plate mark and read the value, turn the telescope 1, and aim at the diameter Use another parallel light tube to observe whether the near-scope index line coincides with the reticle line. A deviation of no more than 5m is allowed. The remaining parallel light sections are set by the spot method. After correcting the image of the reticle, place a white cardboard at the telescope exit and measure whether the parallel light irradiation coincides with the designed exit. A deviation of no more than 5m is allowed. The horizontal and warm line positions of the 64 parallel light arm are 6.4.1 point system return to horizontal position
fast T30 we O electric telescope said the position is tight fish for the fish" () (\ set, align the collimator, adjust the collimator to make the dividing plate mark instrument money index load center directly, and then observe the dividing plate mark according to the autumn light of other collimators, and strive to make the horizontal line in the same horizontal plane, and the deviation from the horizontal plane within the telescope should not exceed 2un, whether the collimator can be adjusted or not
6.4.2 respectively
※ The external instrument safety meter is used on the instrument calibration platform: adjustment is prohibited Make sure the axis is vertical, and the illuminator is not more than 1.8 meters long. Use the telescopic reticle to aim at the vertical line of the reticle plate of the parallel light book, observe the vertical line of each reticle plate of the parallel light tube, and observe the vertical line of the reticle plate of the parallel light tube. 6.5 Check the stability of the combination
The test is to aim the collimator reticle of the instrument. Under the working state, use a dynamometer to test the horizontal reticle of the machine within a range of 18m. The action time is not less than 3 seconds. After the force is released, there is no observable mark movement.
6.6 6.6.1. Place the telescope on the calibration platform, accurately adjust the telescope, aim the telescope at the parallel light graticule plate at the horizontal position and read the target reading according to the vertical disk, turn the telescope to the telescope, and the target readings of the parallel light graticule plates at the two positions should be greater than 25 with the horizontal direction mark, and the symmetry should be less than 3. 5.6.2. Use a single display system to aim at the high, medium and low straight lines. The mark on the graticule mouth of the graticule plate should be fixed on the same straight line as the monitor, and the sight should be clear. 6.7.1 Use the original instrument without focusing error to calibrate, such as N:02, NA31, etc., to install the level light tube of the water level instrument in the way of Figure 3, 1, and adjust the level instrument to the near side of the level light tube and the far side of the level gauge, so that the two level gauges are aligned with the "mark", 2:3, 4, 5. If the underwater line and the underwater indicator line are not the same, the water level will produce a difference value, which is converted into an angle difference of: 20 26
or in: L- focal length of the target (mm)
After that, the alignment light tube should be calibrated with the return measurement direction every day, and the error of each target will be measured. The average value QV of the error of each target will be taken as the average value QV of the error of the return measurement. Install a relative sharp assembly between the alignment light tube and the level (see Figure 3Ⅱ), so that the vertical line of the crosshair mark of the alignment light tube changes to the horizontal direction, repeat the above calibration, and calculate the error in the horizontal direction Qrp||t Figure 3. Calibration device for collimation line of sight
1-Linear tube: 2-Level: 3-Turn collimator The collimation line of sight of collimation tube becomes:
Q, =/QFQ
Formula: 1. The vertical deviation of collimation tube's moon mark from collimation line: 2. The horizontal deviation of collimation tube's sun mark from collimation line 6.7.2 Other calibration methods that meet the requirements of Table 2 are allowed 6.8 Indexing error of multi-tooth indexing table
The indexing error of multi-tooth indexing table shall be verified according to 3I472:199 or "Verification Procedure for Multi-tooth Indexing Table": 6.9 Stability of horizontal angle detection device
6.9.1 Before verification, the collimator tube shall be preheated for not less than 30min(t)
Use a qualified electro-optical theodolite (T3000) or T3 optical theodolite, and observe it by the same observer within 1~2 hours. According to the method specified in 1IG414-1594, the horizontal standard deviation of the measurement is obtained by formula (2). For the multi-tooth indexing table type fixed device, the horizontal standard deviation of the measurement is obtained by formula (3): Zi
Wu City: m
In the formula: Ya
Aiming mark number;
Residual error:
Direction error;
Number of measurement rounds;
Number of inspection points.
JIC 949—2000
Then conduct another measurement every 2 hours, and repeat 6 times. The standard deviations of the 6 measurements are used to calculate the horizontal standard deviation M.
The formula of the standard number k-
is: K
Connecting with formula (5), the stability of the horizontal pin calibration device is obtained: -M2
6.9.2 The calibration device composed of a multi-tooth indexing table and a parallel tube can also be calibrated with a 13-meter theodolite during the periodic calibration. Install the instrument on the standard table, make sure it is level, aim at the tenth line of the parallel light tube and read the reading. After the vehicle is continuously observed for 4 hours, the change is less than 0.2\
6.10 Right-angle calibration device
6.10.1 Stability of right-angle calibration device
Use a T3(00DT3 theodolite that has passed the calibration, and measure the error of a measurement according to the method specified in the JIG414-1994 calibration regulations. The formula (6) is obtained: 2
Where: The measurement error The difference between the known value and the known value;
K--number of times of viewing, K-2~4;
a standard tight right angle teaching,
then press the mother slide 2h to measure again, select 4 times, and convert the standard deviation measured by 4 ohms into (4? Average value, and substitute the standard deviation and (5) Gode calibration device stability Sm: 6.10.2 Special calendar can be relied on to verify the device subject to negative variable error, optical correction For the special-purpose sensing device, the horizontal gear dividing device with a deviation of less than 2 is calibrated. The method is as follows: 6.1.3 The device can be left in the horizontal position to be straightened and inspected. In the horizontal state, use the multi-tooth dividing table to inspect without multi-angle. Then use it in the vertical state. 7
Processing of calibration results
The theodolite that has been calibrated to meet the requirements of this regulation shall be issued a calibration certificate. If it does not meet the requirements of this regulation, the calibration result shall be notified immediately.
8 Calibration period
The calibration period is generally 2 years, and shall be legally required according to the changes in the device and the use of the user. 6
Appendix A
Calibration basis document
Name of the theodolite
Note: Product
Main items to be inspected
JJG 949—2000
Verification certificate page format
Relative accuracy
Standard validity period
Manufacturer
Verification results
Verification requirements
Direction light tube gauge direction straightness
Multiple internal indexing table indexing error
Water half angle verification device stability
Multiple right angle verification device required stability
Vertical angle verification device angle value
Avoid horizontal direction deviation
Measurement uncertainty
Verification results
Note: The certificate is only valid for this measured object. Partial copying is not allowed without the approval of the verification unit. Verification unit address:
Communication address:
Contact number:
Fax:1. Use the original instrument without focusing error to calibrate, such as N:02, NA31 and other water levelers, install the level light tube of the water leveler to be calibrated in the way of 1 in Figure 3, adjust the level stand near the level light tube, and the far side of the level gauge, so that the two level gauges are aligned with the "mark", 2:3, 4, 5. If the underwater line and the water level indicator line are not the same, the water level gauge will produce a difference value, which is converted into an angle difference of: 20 26
or in: L- focal length of the scale mark (mm)
After that, the alignment light tube should be calibrated on the return measurement side every day, and the error of each target will be measured. The average value QV of the error of each target will be taken as the average value QV of the error of the return measurement. Install a relative sharp assembly between the alignment light tube and the level (see Figure 3Ⅱ), so that the vertical line of the crosshair mark of the alignment light tube changes to the horizontal direction, repeat the above calibration, and calculate the error in the horizontal direction Qrp
JIG949-2000
Figure 3 Collimation device for collimation
1-Linear tube: 2-Level: 3-Turn collimator The collimation line of the collimation tube is changed to:
Q, =/QFQ
Formula: 1. The error of the collimation tube's monthly mark in the vertical direction from the collimation line: 2. The error of the collimation tube's daily mark in the horizontal direction from the collimation line 6.7.2 Other calibration methods that meet the requirements of Table 2 are allowed. 6.8 The multi-tooth indexing table indexing error
The multi-tooth indexing table indexing error verification shall be carried out in accordance with 3I472:199 or the "Verification Procedure for Multi-tooth Indexing Tables": 6.9 Stability of the horizontal angle inspection crown device Www.bzxZ.net
6.9.1 Before verification, the collimator tube should be preheated for not less than 30min(t)
Use a qualified electro-optical theodolite (T3000) or T3 optical theodolite, and change it to IG41 within 1~2 hours by the same observer. The horizontal standard deviation of the measurement rounds of 4-1594 is calculated by formula (2). For the multi-tooth indexing table type fixed device, the horizontal standard deviation of the measurement rounds should be calculated by formula (3): Zi
Wu City: m
In the formula: Ya
Aiming mark number;
Residual error:
Direction error;
Number of measurement rounds;
Number of inspection points.
JIC 949—2000
Then conduct a calibration test every 2 hours, and repeat the test 6 times. Use the standard deviation of the 6 measurements to calculate the mean square M.
The formula for the standard number k-
is: K
Connected with formula (5), the stability of the horizontal pin calibration device is obtained: -M2
6.9.2 The calibration device composed of a multi-tooth indexing table and a parallel tube can also be calibrated with a 13-meter theodolite during the calibration. Install the instrument on the calibration table, make sure it is leveled, aim at the tenth line of the parallel light tube and read the reading. Continue to observe for 4 hours, and the change is less than 0.2\
6.10 Right-angle calibration device
6.10.1 Stability of right-angle calibration device
Use a qualified T300DT3 theodolite and measure a standard deviation according to the method specified in the JIG414-1994 calibration procedure. Use formula (6) to obtain: 2
Where: the difference between the measured value and the known value; K-number of times, K-2~4; a standard right angle,
then perform another measurement for 2 hours, select 4 times, and sum the standard deviation of 4 measurements into (4? Calculate the average value, and convert the standard deviation and (5) the stability of the calibration device Sm: 6.10.2 The calibration device can be subjected to negative error. The optical correction device is a special device with a horizontal gear division error less than 2. The calibration is carried out according to the method in the instruction manual: 6.1.3 The device can be left in a horizontal position and the multi-standard is used for straightening and calibration. When in the horizontal state, the multi-standard is used for calibration without multi-standard angle. Then, it will be used in the vertical state. 7
Processing of calibration results
The calibration of the theodolite that meets the requirements of this regulation shall be confirmed and issued with a calibration certificate. If it does not meet the requirements of this regulation, the calibration result shall be notified immediately.
8 Calibration period
The calibration period is generally 2 years, and the user shall comply with the statutory requirements based on the changes in the device and the use of the user. 6
Appendix A
Verification basis documents
Name of calibration instrument
Note: Product
Main items to be inspected Date
JJG 949—2000
Verification certificate page format
Relative accuracy
Standard validity period
Manufacturer
Verification results
Verification requirements
Direction light tube gauge direction straightness
Multiple internal indexing table indexing error
Water half angle verification device stability
Multiple right angle verification device required stability
Vertical angle verification device angle value
Avoid horizontal direction deviation
Measurement uncertainty
Verification results
Note: The certificate is only valid for this measured object. Partial copying is not allowed without the approval of the verification unit. Verification unit address:
Communication address:
Contact number:
Fax:1. Use the original instrument without focusing error to calibrate, such as N:02, NA31 and other water levelers, install the level light tube of the water leveler to be calibrated in the way of 1 in Figure 3, adjust the level stand near the level light tube, and the far side of the level gauge, so that the two level gauges are aligned with the "mark", 2:3, 4, 5. If the underwater line and the water level indicator line are not the same, the water level gauge will produce a difference value, which is converted into an angle difference of: 20 26
or in: L- focal length of the scale mark (mm)
After that, the alignment light tube should be calibrated on the return measurement side every day, and the error of each target will be measured. The average value QV of the error of each target will be taken as the average value QV of the error of the return measurement. Install a relative sharp assembly between the alignment light tube and the level (see Figure 3Ⅱ), so that the vertical line of the crosshair mark of the alignment light tube changes to the horizontal direction, repeat the above calibration, and calculate the error in the horizontal direction Qrp
JIG949-2000
Figure 3 Collimation device for collimation
1-Linear tube: 2-Level: 3-Turn collimator The collimation line of the collimation tube is changed to:
Q, =/QFQ
Formula: 1. The error of the collimation tube's monthly mark in the vertical direction from the collimation line: 2. The error of the collimation tube's daily mark in the horizontal direction from the collimation line 6.7.2 Other calibration methods that meet the requirements of Table 2 are allowed. 6.8 The multi-tooth indexing table indexing error
The multi-tooth indexing table indexing error verification shall be carried out in accordance with 3I472:199 or the "Verification Procedure for Multi-tooth Indexing Tables": 6.9 Stability of the horizontal angle inspection crown device
6.9.1 Before verification, the collimator tube should be preheated for not less than 30min(t)
Use a qualified electro-optical theodolite (T3000) or T3 optical theodolite, and change it to IG41 within 1~2 hours by the same observer. The horizontal standard deviation of the measurement rounds of 4-1594 is calculated by formula (2). For the multi-tooth indexing table type fixed device, the horizontal standard deviation of the measurement rounds should be calculated by formula (3): Zi
Wu City: m
In the formula: Ya
Aiming mark number;
Residual error:
Direction error;
Number of measurement rounds;
Number of inspection points.
JIC 949—2000
Then conduct a calibration test every 2 hours, and repeat the test 6 times. Use the standard deviation of the 6 measurements to calculate the mean square M.
The formula for the standard number k-
is: K
Connected with formula (5), the stability of the horizontal pin calibration device is obtained: -M2
6.9.2 The calibration device composed of a multi-tooth indexing table and a parallel tube can also be calibrated with a 13-meter theodolite during the calibration. Install the instrument on the calibration table, make sure it is leveled, aim at the tenth line of the parallel light tube and read the reading. Continue to observe for 4 hours, and the change is less than 0.2\
6.10 Right-angle calibration device
6.10.1 Stability of right-angle calibration device
Use a qualified T300DT3 theodolite and measure a standard deviation according to the method specified in the JIG414-1994 calibration procedure. Use formula (6) to obtain: 2
Where: the difference between the measured value and the known value; K-number of times, K-2~4; a standard right angle,
then perform another measurement for 2 hours, select 4 times, and sum the standard deviation of 4 measurements into (4? Calculate the average value, and convert the standard deviation and (5) the stability of the calibration device Sm: 6.10.2 The calibration device can be subjected to negative error. The optical correction device is a special device with a horizontal gear division error less than 2. The calibration is carried out according to the method in the instruction manual: 6.1.3 The device can be left in a horizontal position and the multi-standard is used for straightening and calibration. When in the horizontal state, the multi-standard is used for calibration without multi-standard angle. Then, it will be used in the vertical state. 7
Processing of calibration results
The calibration of the theodolite that meets the requirements of this regulation shall be confirmed and issued with a calibration certificate. If it does not meet the requirements of this regulation, the calibration result shall be notified immediately.
8 Calibration period
The calibration period is generally 2 years, and the user shall comply with the statutory requirements based on the changes in the device and the use of the user. 6
Appendix A
Verification basis documents
Name of calibration instrument
Note: Product
Main items to be inspected Date
JJG 949—2000
Verification certificate page format
Relative accuracy
Standard validity period
Manufacturer
Verification results
Verification requirements
Direction light tube gauge direction straightness
Multiple internal indexing table indexing error
Water half angle verification device stability
Multiple right angle verification device required stability
Vertical angle verification device angle value
Avoid horizontal direction deviation
Measurement uncertainty
Verification results
Note: The certificate is only valid for this measured object. Partial copying is not allowed without the approval of the verification unit. Verification unit address:
Communication address:
Contact number:
Fax:3 The device can be left in the horizontal position to be straightened and inspected. In the non-vertical state, use the multi-toothed table to inspect the angle of the theodolite. Then use it in the vertical state. 7
Processing of the inspection results
The theodolite that meets the requirements of this regulation will be issued a verification certificate. If it does not meet the requirements of this regulation, the inspection result will be notified immediately.
8 Inspection cycle
The inspection period is generally 2 years, and it should be legally enforced according to the changes in the device and the use of the user. 6
Appendix A
Documents for inspection
Name of the theodolite
Note: Product
Main items to be inspected
JJG 949—2000
Verification certificate page format
Relative accuracy
Standard validity period
Manufacturer
Verification results
Verification requirements
Direction light tube gauge direction straightness
Multiple internal indexing table indexing error
Water half angle verification device stability
Multiple right angle verification device required stability
Vertical angle verification device angle value
Avoid horizontal direction deviation
Measurement uncertainty
Verification results
Note: The certificate is only valid for this measured object. Partial copying is not allowed without the approval of the verification unit. Verification unit address:
Communication address:
Contact number:
Fax:3 The device can be left in the horizontal position to be straightened and inspected. In the non-vertical state, use the multi-toothed table to inspect the angle of the theodolite. Then use it in the vertical state. 7
Processing of the inspection results
The theodolite that meets the requirements of this regulation will be issued a verification certificate. If it does not meet the requirements of this regulation, the inspection result will be notified immediately.
8 Inspection cycle
The inspection period is generally 2 years, and it should be legally enforced according to the changes in the device and the use of the user. 6
Appendix A
Documents for inspection
Name of the theodolite
Note: Product
Main items to be inspected
JJG 949—2000
Verification certificate page format
Relative accuracy
Standard validity period
Manufacturer
Verification results
Verification requirements
Direction light tube gauge direction straightness
Multiple internal indexing table indexing error
Water half angle verification device stability
Multiple right angle verification device required stability
Vertical angle verification device angle value
Avoid horizontal direction deviation
Measurement uncertainty
Verification results
Note: The certificate is only valid for this measured object. Partial copying is not allowed without the approval of the verification unit. Verification unit address:
Communication address:
Contact number:
Fax:
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