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Bosch Power Tools 1 609 92A 0KJ | (6.5.14)
關閉了自動找平功能後,便可以把測量儀拿在手上,
或者放在合適的底墊上操作。進行交叉測量時,水平
激光束和垂直激光束的交叉角便不會被強制成
90 度。
找平精度
影響精度的因素
操作環境的溫度是最大的影響因素。尤其當溫度從地
面朝著天花板逐漸改變時,極可能改變激光束的投射
方向。
由于接近地面的溫差最大,所以當測量距離超過
20 米時最好把測量儀安裝在三腳架上,另外盡可能
把測量儀器放置在測量場所的中央。
除了外來的影響因素之外,儀器本身的狀況 (例如
儀器摔落了或遭受強烈撞擊)也會影響找平精度。所
以操作儀器之前,一定要先檢查儀器的精度。
先檢查水平激光束的高度精度及找平精度,然后再檢
查垂直激光束的找平精度。
如果在檢查時發現測量儀器的偏差超過最大極限。必
須把儀器交給博世顧客服務處修理。
檢查水平激光束的高度精度
針對這項檢查,您必須找一段無障礙物的 5 米長線
段,而且該測量線段必須介于兩面牆 A 和 B 之間。
把測量儀安裝在三腳架上,並把三腳架擺在靠近牆
A 的位置,或者把儀器放置在靠近牆的堅實、平坦
的地面上。開動測量儀,並選擇有自動找平功能的
交叉測量。
把激光束對準比較靠近的牆 A,並讓測量儀找平。
找出激光束在牆上的交叉點,並在該點的中心位置
打上記號 (點 I)。
把測量儀旋轉 180 度,讓儀器找平。找出激光束在
牆 B 上的交叉點,並在該點的中心位置打上記號
(點 II)。
把儀器移近牆 B (無須旋轉測量儀),開動測量
儀,並讓儀器找平。
調整測量儀的高度 (借助三腳架,必要時得使用墊
塊)讓激光束的交叉點,準確地投射在牆 B 的點
II 上。
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 上點 I 和點 III 的差距 d,便是測量儀的實
際高度偏差。
您可以使用以下的公式計算最大的許可偏差 d
max
:
d
max
= 兩倍的牆壁間距 x 0.3 毫米 /
範例 : 如果牆壁的間距為 5 米,那麼最大的許可偏
d
max
= 2 x 5 米 x 0.3 毫米 / 米 = 3 毫米。所以
記號之間的距離,不可以超過 3 毫米。
檢查水平方向的激光束的找平精度
針對這項檢驗,您需要一個無障礙物的 5 x 5 米空曠
場 地。
把測量儀擺放在堅固、平坦,而且到牆 A 和牆 B
等距的位置上。讓測量儀在水平方向找平。
A
B
5 m
A
B
180˚
A
B
d
180˚
A
B
OBJ_BUCH-817-005.book Page 197 Tuesday, May 6, 2014 10:15 AM
197


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