How to accept the measuring instrument and the calibration of the engineering measuring instrument

Safety knowledge of the use of measuring instruments.

l) 1. The power cord and plug of the electronic instrument should be intact.

2. When testing the components of the high-voltage part, special attention should be paid to the insulation of the body from the high-voltage electricity, and it is best to operate with one hand and stand on the insulating board to reduce the risk of electric shock. In the unlikely event of an electric shock, the main power supply should be cut off immediately and first aid should be provided.

3. In case of burnt smell and ignition during the experiment, the power supply should be cut off immediately, and the circuit should be checked to eliminate the fault.

4. The power supply should be cut off after the experiment is completed to prevent accidents.

Level 1 year, theodolite, total station 1 year.

Engineering Surveying Code GB50026-2007

1 0 4 The instruments and related equipment used in engineering surveying operations should be checked and corrected in a timely manner, and maintenance should be strengthened

Regular maintenance. If the instrument test has an expiration date, it is generally one year.

JJG425 1994 V.R. for Level Verification.

Verification cycle. The verification cycle of the level is determined according to the environmental conditions and frequency of use, and generally does not exceed 1 year.

JJG 414-2003 Optical theodolite verification procedure.

The verification cycle of theodolite depends on the situation, generally not more than 1 year.

The total station is applied to an optical theodolite.

Usually once every six months, in fact, a good instrument is fine once a year.

The contents of inspection and acceptance include: 1. Indoor and outdoor inspection.

1) Check the control measurement results. Measure whether the layout of the control network and the burial of signs meet the requirements; the accuracy of the various observational records and calculations; Whether the measurement methods, limits, and accuracy of various control points meet the requirements; Whether the submitted information is complete.

2) Examination of the results of the real estate survey. Whether the content of the elements of the real estate survey is complete and correct; Whether the house ownership boundary, four wall ownership and some symbols on the house ownership diagram are consistent with those of the property map.

3) Inspection of the measurement results of real estate elements. whether the measurement methods, calculations, and results are accurate; Whether the measurement elements are complete and whether the trade-offs of the ground objects are reasonable.

4) Inspection of property plans. whether the scale meets the requirements; whether the expression of the elements of the property is complete and accurate; Whether the surface accuracy and edge processing meet the requirements.

5) Inspection of area measurement. Whether the calculation of the area of the property is accurate and whether the accuracy meets the requirements; whether the calculation of the land area is correct and whether the accuracy meets the requirements; Whether the calculation and apportionment of the common area is accurate and reasonable.

2. Acceptance of results: (1) The final acceptance of product results shall be organized and implemented by the entrusting unit of the task. After the acceptance work is completed, the inspection report and acceptance letter should be written.

2) Problems found in inspection and acceptance at all levels should be recorded and dealt with prominently.

3) Submit the content of the acceptance of the results.

4) Evaluation of the quality of the results.

1 7 First install the battery on the laser rangefinder, for those laser rangefinders that can be charged directly, we must fully charge the battery before use.

2 7 There will be a switching power supply on each laser rangefinder, and some can be turned on by pressing the "launch button", and the internal power supply of the rangefinder can be turned on, and the rangefinder can be seen to be in standby mode through the eyepiece.

3 7 After turning on the power, before measuring, we also have to select a good unit, the operation method is to press and hold the "mode button", you can directly select the unit you want to select.

4 7 After all the preparations are done, we can aim at the measured object through the "internal liquid crystal screen" in the rangefinder eyepiece, and pay attention not to shake the hand, which can reduce the error and the measurement result will be more accurate.

5 7 After determining the accuracy, press the "Transmit Button", then the measured distance will be displayed on the "Internal LCD Screen", we can write down this value, if you are worried that the measurement is not accurate, you can measure it several times.

6 7 When aiming at the measured object, if we feel that the measured object is not very clear, we can adjust the sharpness of the distance of the measured object through "+-2 diopter adjuster", and we can adjust the distance and proximity by turning or reversing to achieve the most ideal sharpness.

7 7 The use of laser rangefinders, various brands and models may be different, but the basic use methods are similar, and there will be no problem in looking at the manual.