产品介绍：

Device name：Upgraded Horizontal Shrinkage Expansion Instrument
Model：YC-HSP540D
Origin：Beijing
Purpose：A special instrument for measuring the change of length (volume) of concrete specimens during hardening under certain environmental conditions.
型号：YC-HSP540D
用途：用于测量混凝土试件在一定环境条件下，硬化过程中长度（体积）发生变化的专用仪器，可为建筑科学研究院所、门、设计和施工单位对砊的特性进行研究、教育、质量控制和检测提供可靠依据。
执行标准：
GB/T50082-2009《普通混凝土长期性能和耐久性能试验方法标准》
现有卧式混凝土收缩膨胀仪存在如下不足：
（1）标准中校准杆材质建议选择硬钢或石英玻璃材质制作，但目前市场上的校准杆基本上都为不锈钢材质，不锈钢校准杆的线膨胀系数很大，易因温度波动影响造成误差。
（2）千分表精度差，即使选用业内较好的电子千分表也有±3um的测量误差，一般的千分表误差在±5um以上，这对于混凝土试件后期收缩量本来就很小而言，会造成很大的误差。
（3）试验过程人工读数记录，易因人为笔误或在数据抄写过程中失误造成错误。 
并且，由于在整个试验周期中，同一个试件要测量十几次，上述3种误差因素会被不断放大，很有可能出现前后试验结果相互矛盾的现象，且无法找到问题根源。 
The shortcomings of available horizontal concrete shrinkage expansion meter:
(1) Hard steel or quartz glass is recommended for the calibration rod material in the standard, but the available calibration rod in the market is mostly made of stainless steel. Its linear expansion coefficient is too high, which is easy to cause errors due to the influence of temperature fluctuation.
(2) The accuracy of the micrometer is poor, even if the best electronic micrometer is used, because its measurement error is more than 3um. Generally, the error of the micrometer is more than 5um, which will cause a great error for the shrinkage of concrete specimens in the later period.
(3) Manual reading records during the test process are prone to errors, which is caused by human errors or errors in data transcription.

Moreover, the same specimen needs to be measured more than a dozen times in the whole test cycle. The above error factors will be enlarged continuously, and it is likely that there will be conflicting phenomena between early and later results. We can’t find the root cause of the problem.

性能特点：

1、测量准确：高精度位移传感器配合无膨胀合金校准杆使用，测量误差在±1um以内，，保证了长龄期测试结果的准确性和对比性；
2、无需长期在线观测，到达龄期后测试即可，提升了设备使用效率；
3、试验过程无需手动记录，全部数据存储于测试主机当中，试验人员通过U盘即可将试验结果导出，然后通过电脑excel软件查看即可；
4、测试结果自带操作人员标识，同时记录试验时间、试验环境的温湿度、试件编号、龄期、试件长度；
5、设备具有权限设置功能，非操作人员无法登录，保证了试验结果的安全性；

Features:
1. More accurate: With the help of high-precision displacement sensor and invar calibration rod, the measurement error is less than 1um, which ensures the accuracy and comparability of long-term test results.
2. No needs for long-term on-line observation. Testing at the age can improve the efficiency of the equipment.
3. There is no need to record manually during the test process. All the data are stored in the test host. All results could be derived by the user through U disk, and then can be viewed by Excel.
4. The test results are marked by operators, and the test time, temperature and humidity of the test environment, specimen number, age and length are recorded at the same time.
5. The device has the function of permission setting, and the non-operator can not log in, which ensures the safety of the test results.

技术参数：

型号               YC-HSP540D
测量范围          538-542mm
位移传感器量程      0-2mm
位移传感器测量误差   ±1um
校准杆长度             540±0.1mm  
温度测量范围           0℃~50℃
温度测量误差           ±0.5℃（25℃）
湿度测量误差        ±3%（5%RH~95%RH，25℃）
主机尺寸          长×宽×高=370mm×340×240mm
模具尺寸          长×宽×高=670mm×240×180mm

Parameters：
Model:  YC-HSP540D
Measurement range of tester: 538-542mm
Measurement range of sensor:0-2mm
Error in measurement: ≤1um
Resolution：0.1um
Size of Invar reference bar: 540±0.1mm
Error of temperature sensor：≤0.5℃
Measurement range of temperature sensor：0-50℃
Error of humidity sensor: ≤3%RH
Specimen size: 100×100×515mm
Host size: 370×340×240mm
Dilatometer bench size: 670×240×180mm
Power supply：AC220V/AC 110V

产品配置：

1、触摸屏测试主机：1台
2、卧式测量模具：1台
3、低膨胀合金杆：1根
4、温湿度传感器：1台
5、高精度位移传感器：1台
6、电源线：1根

1、 Touch screen test host：1
2、 Horizontal measuring die:1
3、 Invar reference bar:1
4、 Temperature and humidity sensor：1
5、High-precision sisplacement sensor : 1
6、Power cord:1