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Construction laser level using method!

 

1. The two V-shaped measuring planes of the frame degree meter are the reference of the measurement accuracy, and can not be contacted or rubbed with the rough surface of the task in the measurement. Care must be taken when placing it to prevent damage to the instrument due to scratches on the measuring surface and the formation of undue measurement errors. 2, When measuring the vertical surface of the workpiece with the frame degree meter, it is impossible to hold the absolute position with the auxiliary front surface, and press the workpiece three-dimensionally in vertical direction. This may affect the accuracy of the measurement due to the force deformation of the degree instrument. Accurate measurement method is to hold the medial side of the test surface, so that the level of bumpy, vertical (adjust the bubble position at both ends) attached to the workpiece vertical three-dimensional, and then read from the vertical level of cell movement grid. 3, the use of degree instrument, to ensure that the degree of instrument surface and workpiece surface clean, in order to avoid dirt affect the accuracy of measurement. When measuring the degree surface, in a unified measurement position, the instrument should be adjusted to the opposite direction and then stop measuring. When moving the instrument, do not allow the degree instrument task surface friction with the appearance of the workpiece, it should be put to place.
2, the use of methods Instrument scale value with angle (seconds) or slope to disclose performance, its meaning is to offset the performance of the bubble shift a grid task to reveal the performance of the angle, or to offset a bubble mission appearance in a meter length The height of the tilt revealed performance. Because the degree of inclination of the instrument is very small, so tg, such as tg44 radian = 0.02mm / 1000mm, measuring instrument mission surface close to the measured surface, to be read before the bubble fluctuations. If you want to measure the practical inclination of length L, you can stop the argument by the following formula. For example, the nominal graduation value is 0.02 mm / m, L = 200 mm, and the number of deviation grids is 2 cells. The actual inclination value is 0.02 / 10002002 = 0.008 mm. In order to prevent the degree instrument due to the prohibition of the measurement error caused by the prohibition, and therefore before the instrument must be zero degree instrument to reflect on or adjust. Degree instrument zero reflection and adjustment measures will be school degree instrument on the level of the plate, close to the positioning block, to be bubble after the bubble end of reading a1, and then the degree of instrument turned 180 azimuth, accurate Place in the original position, in accordance with the first reading side of the note down the reading of the other end of the bubble a2, half of the difference between the two readings for the zero error, that is = (a1-a2) / 2 grid. If the zero error ultra-red promised to be limited, you need to adjust the zero agency.

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