Nivel System N24x Bedienungsanleitung Seite 4

2. Distance measurement:
- read the value on the staff using upper and lower line. Difference between those lines
multiplied by 100 is equal to distance between level and the staff. On the picture reading of
upper line is 3,601m. Reading of lower line 3,309m.
Distance between level and staff is 100*(3,601-3,309)=29,2m
3. Angle measurement:
- aim at point A and write down the reading of horizontal wheel α
- aim at point B and write down the reading of horizontal wheel β
- calculate the angle AOB = γ = α – β
CHECKING AND CALIBRATING
1. Circular vial:
Checking: using the levelling screws move the bubble to the centre of the vial. Turn the
instrument 180°. Vial bubble should be still in centre. If it's not calibration is necessary.
Calibration: Using levelling screws remove the half of vial bubble inclination, next using the
calibration wrench move the bubble to the centre of the vial. Check the vial again.
2. Crosshair:
Checking: Place staves in distance from 30m to 50m between of them. Place the level in half of
distance between the staves. Using the levelling screws, level the vial.
Perform the reading of staff A in example
1,924m. Perform the reading of staff B in
example 1,712m. Calculate the height
difference H=A-B in example 0,212m.
Set the level near staff A (about 1 m from
staff). Aim at staff A and make the reading in
example 1,696m. From reading of A staff
subtract calculated height difference, the
result with accuracy 3mm should be equal
reading on staff B in example 1,484m. If the
difference is greater the calibration is
necessary.
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