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Bosch Power Tools 1 609 92A 0KK | (7.5.14)
把測量儀旋轉 180 度,但是不可改變測量儀的高度。
調整測量儀,讓垂直方向的激光束穿過牆 A 的點
I。讓測量儀找平,並且在牆 A 的激光束交叉點上
做記號 (點 III)。
牆A上I 和點 III 的差距 d便是測量儀在橫軸上的
實際高度偏差。
測量的距離是 2 x 5 米 = 10 米。而最大的許可誤
差為 :
10 米 x ±0.2 毫米 / 米 = ±2 毫米。
I 和點 III 的差距 d 不可以超過 2 毫米。
檢查垂直方向的激光束的找平精度
針對這項檢驗,您必須尋找一處有門孔而且地板堅實
的場地。此外,門孔的前后兩側至少要有 2.5 米的空
間。
把測量儀放置在距離門孔 2.5 米處的堅實、平坦的
地面上 (不可以使用三腳架)。讓測量儀在垂直測
量的功能上自動找平,並且把激光束朝向門孔。
找出投射在門孔地板上的垂直激光束的中心點,並
在該中心點打上記號 (點 I。在門孔的另一側約
5 米遠處再做一個記號 (點 II,在門孔的上緣做
第三個記號 (點 III)。
先把測量儀器旋轉180度並將它放在門孔的另一側,
要直接放在點 II 之下。讓測量儀器找平,調整垂直
激光線段讓激光束的中心點準確地穿過點 I 和點
II
在門孔上緣的激光線段中心點打記號,並將它定為
IV
III 和點IV的差距 d 便是測量儀在垂直方向的實際
偏差。
測量門孔的高度。
最大許可偏差的計算方式如下 :
雙倍門孔高度 x 0.2 毫米 /
例子 : 如果門孔的高度為 2 米,那麼最大的許可偏差
2 x 2 米 x ±0.2 毫米 / 米 = ±0.8 毫米。在接
下的測量過程中點 III 和點 IV 的最大距離不可以超過
0.8 毫米。
有關操作方式的指點
記號一定要打在激光束的中心位置。 激光束的寬度
會隨著距離的遠近而改變。
使用激光靶工作
在工作環境條件不良以及測量距離遙遠時,使用激光
15 可以改善激光光束的能見度。
激光靶 15 上的反射部分,能夠改善激光的辨識度。
如果使用激光靶的透明部分,也能夠從激光靶的背面
看見激光。
使用三腳架工作 (附件)
三腳架是穩固而且能夠改變高度的測量底架。把測量
儀器的 1/4" 三腳架接頭 9 擰入三腳架 22 上的螺桿
中,或一般的三腳架中。如果把儀器安裝在一般的工
地用三腳架上,則要使用 5/8" 的三腳架接頭 8。使
用三腳架上的固定螺絲固定好測量儀器。
使用通用支撐固定 (附件)(參考插圖 D)
使用通用支架 19 可以將測量儀器固定在傾斜面、管
子或能夠讓磁鐵吸附的材料上。通用支撐也可以充當
地面三腳架,它可以減輕調整測量儀器高度的工作。
A
B
dd
180°
2,5 m
2,5 m
2 m
d
OBJ_BUCH-907-003.book Page 183 Wednesday, May 7, 2014 1:39 PM
183


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