一，产品简介：
基于美国ASTM E1155M（地坪平整度FF和地坪水平度FL数值标准测试方法）相关要求进行研发生产，其功能和使用方法类似于美国的Dipstick测试仪或D-meter。
First, product introduction
Based on the relevant requirements of ASTM E1155M (floor flatness FF and floor level FL numerical standard test method), the function and usage method is similar to the Dipstick tester or D-meter in the United States.

二，特点：
♦仪器由检测机架和平板电脑构成，组装维护方便；
♦测试软件为全中文，符合国人使用习惯，简单易用；
♦既可以直接读取当前测试的地坪剖面线的平整度FF和FL值，也可以对所有测试数据进行Excel数据表存档，便于后期分析；
♦采用高精度传感器，单组数据分辨率为0.05mm，测试精度为0.1mm 25℃）；
♦全铝合金机身，轻便易操作；
♦高容量锂电池保证持久的续航能力；
♦提供配套的使用说明及数据分析教材资料。
First, the characteristics:
♦The instrument consists of a test rack and a tablet computer, which is easy to assemble and maintain;
♦ The test software is all Chinese, in line with the habits of Chinese people, easy to use;
♦ It can directly read the flatness FF and FL values of the floor profile of the current test, or archive the Excel data table for all test data for later analysis;
♦ High-precision sensor with a single data resolution of 0.05mm and a test accuracy of 0.1mm (@25°C);
♦ All-aluminum body, light and easy to operate;
♦ High-capacity lithium battery guarantees long-lasting battery life;
♦ Provide supporting instructions and data analysis materials.

三，相关背景：
F数值为美国混凝土协会(AmericanConcreteInstitute#117)及加拿大标准协会(CanadianStandardAssociation#A23.1)为规范及测量混凝土地坪平整及高差的标准。此规范包括两个F数值：FF为平整度，FL为高差值，平整度关系着地坪的隆起与凹陷；高差值关系着地坪的倾斜或高差。也就是说平整度FF表示地坪整体意义的起伏程度，水平度FL表示地坪整体意义的倾斜程度。愈高的F数值代表地坪的平整度愈佳。
econd, related background
The F values are the American Concrete Institute (American Concrete Institute #117) and the Canadian Standard Association (Canadian Standard Association #A23.1) are standards for the specification and measurement of concrete floor leveling and height difference. This specification includes two F values: FF is flatness, FL is high difference, flatness is related to the elevation and depression of the floor; high difference is related to the inclination or height difference of the floor. That is to say, the flatness FF indicates the degree of fluctuation of the overall meaning of the floor, and the level FL indicates the degree of inclination of the overall meaning of the floor. The higher the F value, the better the flatness of the floor.