| 天津压力变送器允许误差，活塞压力计知识拓展！ |
| 信息来源： 压力计厂家 | 2019-05-20 点击量： 4604 |
活塞压力计知识拓展，西安华恒仪表为您讲解：
Piston pressure gauge knowledge development,Xi'an Huaheng Instrument for you to explain:
1.高压活塞压力计的特点是什么？
活塞杆细，压力大，活塞杆容易断。卖点我们的活塞杆用10mm的碳化钨杆子研磨，一直磨到2.532mm,这样才能保证杆子同心度，10mm的为保护杆，安装在间隙只有10.01mm的保护套里面，活塞位置发生偏移时，保证下面的活塞杆不受外力作用，从而起到保护作用。
1.What are the characteristics of high pressure piston pressure gauge?
The piston rod is thin,and the pressure is high.The piston rod is easy to break.Selling point Our piston rod is ground with 10 mm tungsten carbide rod until 2.532 mm,so as to ensure the concentricity of the rod,10 mm is the protective rod,installed in the protective sleeve with only 10.01 mm clearance,when the position of the piston is offset,ensure that the lower piston rod is not affected by external force,thus playing a protective role.
2.活塞压力计用什么介质，比例是多少？
25MPa以下用煤油（航空煤油）和变压器油（25号变压器油）的混合物，比例是煤油:变压器油=1：3；25MPa以上采用癸二酸酯
2.What medium does the piston pressure gauge use and what proportion is it?
The mixture of kerosene(aviation kerosene)and transformer oil(transformer oil No.25)below 25MPa is kerosene:transformer oil=1:3;sebacate is used above 25MPa.
3.为何活塞要关预加压阀？活塞预加压的作用是什么？预加压的优缺点是什么？
活塞压力计预加压作用是：扩展压力工装更方便，高压的话加压轻松；如果不关预加压阀的话，容易漏油；缺点是操作繁琐。
3.Why does the piston turn off the pre-pressure valve?What is the function of piston preloading?What are the advantages and disadvantages of pre-pressurization?
The pre-pressurization function of piston pressure gauge is that it is more convenient to expand pressure tooling and easy to pressurize under high pressure;if the pre-pressurization valve is not turned off,it is easy to leak oil;the disadvantage is that the operation is cumbersome.
PS:天津压力变送器允许误差，活塞压力计知识拓展！
PS:Tianjin pressure transmitter allows errors,piston pressure gauge knowledge expansion!
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