使 用 說 明
一、 用途
水平儀主要用於檢驗各種工具機及其它設備導軌的平直度，安裝的水平位置和垂直位置的正確度等。
二、結構特點
該儀器主要有主體、主水準器、副水準器和零位調節裝置組成，按其結構可分為可調式和固定式。其區別是：
可調式水平儀通過調節水準器來調整零位，零位調整靈活、方便。
固定式水平儀的主水準器與主體經校正零位後固定在一起，零位較穩定可靠。
三、 使用方法
測量時使水平儀工作面緊貼在被測表面，待氣泡完全靜止後方可進行讀數。
水平儀上所標誌的刻度示值是以一米為基長的傾斜值，如需測量長度為L的實際傾斜值，則可通過下式進行計算：
實際傾斜值=刻度示值×L×偏差格數
例如：刻度示值為0.02mm/m，L=200mm，偏差格數為2格。
則：實際傾斜值=0.02/1000×200×2=0.008mm
為避免由於水平儀零位不準而引起的測量差，因此在使用前必須對水平義的零位進行檢查或調整。
四、 零位檢查、調整方法
先將工作面擦乾淨，放在基礎穩固、大致水平的平板上，待氣泡穩定後，在一端（相對觀測者而言）讀數，且定為零。再將水平儀調轉1800，仍放在平板原位置上，待氣泡穩定後，仍在原來一端（左端）讀數為a格（以前次零位讀數為起點），則水平儀零位誤差為a/2格。
有兩種結構，兩種調整方法。
當發現水平儀零位超差時，對可調式水平儀先將工作面擦乾淨，放在安置平穩的工作檯上：第一種結構：將孔內的圓蓋打開，用專用扳手輕微轉動調節螺母（原理圖如圖一）；第二種結構：調節120o支撐螺釘（原理圖如圖二）。待氣泡靜止後，記取讀數，再將水平儀調轉180o放在原來位置上，在同一邊讀數，當兩次讀數差不大於1/2格時，即已調整好，靜放2～4小時以上，如無變化，將圓蓋板蓋上，即可使用。對於非規定調整的螺釘、螺母不得隨意擰動，調整後螺母等件必須固緊。
固定式水平儀的零位調整可通過修研工作面進行，檢驗方法同上。
五、使用注意事項
1、 使用前，必須先將被測量面和水平儀的工作面擦洗乾淨。並進行零位檢查。
2、 溫度變化會使測量產生誤差，使用時必須與熱源和風源隔絕。如使用環境溫度與保存環境溫度不同，則需在使用環境中將水平儀置於平板上穩定2小時後方可使用。並儘量保持恆溫。
3、 測量時必須待氣泡完全靜止後方可讀數。
4、 讀數時，應垂直觀察，以免產生視差。
5、 使用完畢，應進行防鏽處理，放置時，注意防震、防潮。
6、 水平儀在正確使用和保管的前提下，由於製造原因而產生的缺陷、故障，自出廠之日起半年期限內本廠負責免費修理、退換，但提出該項要求的產品必須結構完整、外表無損。
Service Manual
Ⅰ. Application
The Level is mainly used to check the straightness of the slide ways of all machine tools and other equipment and the correctness of horizontal and vertical installing positions.
Ⅱ. Structure and Feature
It mainly consists of main body bubble tube, sub-bubble tube and zero adjusting device also can separate into adjustable type and fixing type.
The adjustable type can adjust zero position that use Main bubble tube, To use this type is very easy and convenient.
After check the zero position of fixing type level, The main spirit level is fixed with the main body. zero position is stability and reliable.
Ⅲ. How to use
During measurement put the working surface of the level close to the surface to be tested. Wait till the bubble is stationary, than take the reading. The scale value shown by the level is the inclination on 1m. To measure the actual inclination of length L use the formula below:
Actual inclination = scale reading × L × number of deviating division.
For example: scale value = 0.02mm/m. L = 200mm.
Number of deviating division = 2 division
Actual inclination = 0.02/1000 × 200 × 2 = 0.008mm
To avoid the inaccuracy of the zero position of the level, which causes the error during measurement, the zero position of the level must be checked or adjusted before use.
Ⅳ. Check and adjust
First clean the working surface and place on stable platform, put the level on an approximately horizontal flat plate which should has a firm foundation. After the bubble is stationary set one end, for example, the left end (the observe facing the level) at zero. Make an 180o turn. Again put the level on the flat plate at the same position. After the bubble is stationary at the same end (left end) take a reading of 「a」 divisions (former zero reading as a starting point). Then the zero position error of the level is a/2 division.
Two adjusting method.
If the level is found not correct at zero, first clean the working surface and place on a stable platform:
⑴open the round cover plate in the hole and use a special spanner to lightly rotate the adjusting nut(See Drawing 1).
⑵adjust 120othe adjusting screws(See Drawing2).
When the air bubble is stable, remember the reading number; turn the level by 180o and place it back to its original position and observe again the reading. If the difference of the two readings is not over 1/2 line, it means the adjustment is correct, then put back the round cover plate and wait for 2-4 hours more. If there is no change, the level can be put into use. Do not turn the screw or not which is not intended for adjustment purpose. Tighten up the nut after the adjustment.
Polish working surface can help to adjust zero position of the fixing type level.
Ⅴ. Service Notice
⒈ Before use, measuring surface and the working surface of the level must be cleaned. And check the zero position.
⒉ Keep away from heat and wind sources when use. Temperature change can cause error in the measurement. When the temperature of measuring environment is different from the storage environment. Keep the level in the measuring environment for 2 hours before use.
⒊ After being placed on the measuring surface, the reading can not be taken until the air bubble is stable.
⒋ When taking reading, observation should be vertical so that to avoid viewing error.
⒌ After use antirust treatment should be carried on and storage shock roof and damp roof needing attention.
⒍ On condition that the level was used and stored in a proper way, if defects, troubles caused by the manufacturers were found, the factory will be held responsible to repair it free of charge or exchange it within 6months after its delivery from the factory. But the said product must be intact in construction and it should not be damaged in outside appearance.