砌墙砖收缩膨胀仪是检测仪器，适用于砌墙砖生产厂、科研单位、大专院校、建工部门等单位用来检测烧结普通砖、粉煤灰砖等砌墙砖的收缩及膨胀变形量。使用前务必仔细阅读说明书。并由实验人员操作，以避免操作不当引起的伤害。如需了解更多资料请与我公司客服人员联系。

Wall brick shrinkage and expansion meter is a testing instrument, suitable for wall brick production plants, scientific research units, colleges, construction departments and other units to detect the shrinkage and Amount of expansion deformation. Be sure to read the instructions carefully before use. It is operated by ** experimental personnel to avoid injury caused by improper operation. For more information, please contact our customer service staff.

砌墙砖收缩膨胀仪是由：底座、试样架、测量表架、上测头、紧固螺钉、下测头、百分表、标准杆、试体固定螺钉、底座调整螺丝等组成。该产品是依据GB/T2542-2012《砌墙砖试验方法》标准设计制作，上下测头采用90°锥形凹座。具有使用方便、测量精度高、速度快、读数清楚等特点。

The masonry brick contraction and expansion meter is composed of a base, a sample holder, a measuring meter holder, an upper probe, a fastening screw, a lower probe, a dial indicator, a standard bar, a test body fixing screw, and a base adjusting screw. This product is designed and manufactured in accordance with GB / T2542-2012 "Test Methods for Masonry Bricks". The upper and lower probes use 90 ° conical recesses. With easy to use, high measurement accuracy, fast speed, clear readings and so on.

砌墙砖收缩膨胀仪主要技术参数：

★百分表量程：0～10mm；      小刻度值: 0.01mm；

★标准杆长度：（256±0.02）mm；  标准杆测头球面半径：SR=2.25mm；

★测量范围：251mm～261mm

★外形尺寸：320X300X550mm

★重量：约12kg

Main technical parameters of wall brick shrinkage and expansion meter:

★ Dial indicator range: 0 ~ 10mm; small scale value: 0.01mm;

★ Par length: (256 ± 0.02) mm; spherical radius of the par probe: SR = 2.25mm;

★ Measuring range: 251mm ～ 261mm

★ Dimensions: 320X300X550mm

★ Weight: about 12kg

砌墙砖收缩膨胀仪注意事项：

★使用时，忌用手直接与标准棒接触，应持外外套部分，以防止标准棒受人体手温的影响。

★仪器用完毕后，应将测量框架的测量头和百分表探拭净，并涂以钟表油；测试过程中，应使百分表的测头缓慢而平稳地与试件接触，不允许冲击和碰撞，严禁将百分表测杆顶过A大量程范围，以免影响表的灵敏度和使用寿命。

Note for wall brick shrinkage and expansion meter:

★ When in use, do not touch the standard rod directly with your hand, and you should hold the outer jacket to prevent the standard rod from being affected by human hand temperature.

★ After the instrument is used, the measuring head and dial indicator of the measuring frame should be cleaned and coated with clock oil; during the test, the dial indicator should be brought into contact with the test piece slowly and smoothly. For impact and collision, it is strictly forbidden to push the dial gauge rod over a large range of A to avoid affecting the sensitivity and service life of the meter.

砌墙砖收缩膨胀仪试验方法：

★先将标准棒置于工作台上，拧动调整螺丝使之近似垂直。

★将测量框架置于标准棒的顶头，调整螺杆和螺母，使百分表对准零位（或记下百分表之刻度）。

★将制作养护好的试件两端擦拭净，然后放置在工作台上，然后把测量框架套在试件上，并左右移动表框，使试件与测量框架的测量头准确地接触，此时即可开始读数，并记录下表盘上的刻度值。

★如果实验不是连续进行或实验历时较

Test method for contraction and expansion of wall bricks:

★ Put the standard rod on the workbench first, and turn the adjustment screw to make it almost vertical.

★ Place the measuring frame on the top of the standard rod, adjust the screw and nut to make the dial indicator align with the zero position (or write down the dial indicator scale).

★ Wipe the two ends of the prepared and cured test piece, then place it on the workbench, then put the measuring frame on the test piece, and move the table frame left and right, so that the test piece and the measuring head of the measuring frame accurately contact. You can start reading and record the scale value on the dial.

★ If the experiment is not continuous or the experiment lasts longer