Let me tell you about the operation steps of the universal level meter.


Release time:

2023-01-03

The use of the universal level includes the operation steps of instrument placement, coarse adjustment, aiming at the level, leveling and white reading.

Let me tell you about the operation steps of the universal level meter.

The use of the universal level includes the operation steps of instrument placement, coarse adjustment, aiming at the level, leveling and white reading.

1. the gimbal level to place the level

Open the tripod, let the height be moderate, visually inspect the head of the tripod is roughly horizontal, check whether the legs of the tripod are firmly placed, and whether the telescopic screws of the tripod are tightened, then open the instrument box, take out the level, place it on the head of the tripod, and use the connection Screw firmly fix the instrument on the tripod head.

2. level rough leveling

Roughness refers to making the vertical axis of the instrument roughly vertical with the help of the bubble center of the universal level, so that the collimated axis is roughly horizontal. During the leveling process, the bubble moves in the same direction as the left thumb.

3. level aiming level

First aim the eyepiece to the bright background, turn the eyepiece aiming screw to make the crosshairs clear, loosen the brake screw again, turn the telescope, align the shutter and the sight on the telescope to the level, and tighten the brake screw, and then Use the telescope to observe; turn the objective lens to the light screw to make the target clear, and then turn the micro-motion screw to align the vertical line with the horizontal.

When the eye moves slightly up and down on the eyepiece end, if it is found that the crosshair moves relative to the target image, this phenomenon is called parallax. The parallax is caused by the fact that the target imaging plane and the crosshair plane do not coincide. The parallax will affect the reading Accuracy, so to eliminate, the elimination method is to carefully align the objective lens again until the eyes move up and down and the reading remains unchanged, the image of the crosshairs and the target seen from the eyepiece is very clear.

4. gimbal level fine leveling and reading

Observe the bubble in the level tube through the bubble observation window on the left side of the eyepiece. Turn the slightly inclined screw with the right hand to make the images at both ends of the bubble match, which means that the collimating axis of the level has been leveled. At this time, you can use the midpoint of the crosshair to read on the scale. At present, most levels use inverted telescopes, so the reading should be from small to large, that is from top to bottom, then report all readings. Although leveling and reading are two different operation steps, these two operations are regarded as a whole when leveling, that is to say, the reading will be carried out after leveling, and it is necessary to check whether the horizontal bubbles in the pipeline are completely in the same line after reading. Only in this way can accurate readings be obtained.

In order to unify the national elevation system and meet the needs of various measurements, the surveying and mapping department has embedded and measured many elevation points all over the country. These points are called datums, abbreviated as BM. The leveling is usually the elevation of other points drawn from the leveling point. The water level is generally made of stone or reinforced concrete, buried deep below the ground freezing line, and there is a hemispherical mark on the top of the monument, made of stainless steel or other materials that are not easy to rust, some leveling points can also be set on a stable foothold, called the wall leveling point.

Wanxiang level meter manufacturers will not explain too much, thank you for watching the level meter procurement can consult our company.

 

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