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江南app登录 出现负值的原因


2024-04-19


江南app登录 又叫密封测试仪、气密性检测设备等各种名字,其通过利用气体检测技术,通过压力传感器、流量传感器和温度传感器等核心部件实时监测设备内的压力和流量变化,以此判断密封性能是否存在问题。

近期,看到一些用户是使用江南app登录的时候,出现了负值的现象,这么是什么原因导致的呢?以下根据这种情况给大家说说一些可能原因:

江南app登录

1.密封圈或模具限位问题:如果密封圈太高或模具限位没有做好,测试过程中密封圈或产品可能会被进一步压紧,导致被密封腔体体积变小,从而使得压力上升。

2.温度变化:环境温度的升高或测试工件本身温度的变化,根据理想气体状态方程(PV=nRT),在体积不变的情况下,温度升高会导致压力上升,从而可能出现负的泄漏值。

3.产品容积改变:如果被测产品的容积在测试过程中发生变化,比如由于变形或注入液体导致容积变小,也可能引起压力上升。

4.夹具及管路形变:夹具或管路如果有形变,可能导致整个测试容积变化,进而引起压力上升。

5.气缸压力过大:如果气缸压力设置过大,可能会导致产品在测试过程中被过度压缩,从而引起内部空间减小,压力上升。

6.标准口漏气:在使用差压检测方式的过程中,如果标准口漏气,而待测产品没有泄漏,也可能导致泄漏值出现负值。

7. 参数设置不当:充气时间、测试时间或平衡时间设置不当,可能会导致测试结果不准确。

以上关于江南app登录出现负值的原因详细介绍。

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