| 天津壓力變送器允許誤差，活塞壓力計知識拓展！ |
| 信息來源： 壓力計廠家 | 2019-05-20 點擊量： 4491 |
活塞壓力計知識拓展，西安華恒儀表為您講解：
Piston pressure gauge knowledge development,Xi'an Huaheng Instrument for you to explain:
1.高壓活塞壓力計的特點是什么？
活塞桿細，壓力大，活塞桿容易斷。賣點我們的活塞桿用10mm的碳化鎢桿子研磨，一直磨到2.532mm,這樣才能保證桿子同心度，10mm的為保護桿，安裝在間隙只有10.01mm的保護套里面，活塞位置發生偏移時，保證下面的活塞桿不受外力作用，從而起到保護作用。
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.活塞壓力計用什么介質，比例是多少？
25MPa以下用煤油（航空煤油）和變壓器油（25號變壓器油）的混合物，比例是煤油:變壓器油=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.為何活塞要關預加壓閥？活塞預加壓的作用是什么？預加壓的優缺點是什么？
活塞壓力計預加壓作用是：擴展壓力工裝更方便，高壓的話加壓輕松；如果不關預加壓閥的話，容易漏油；缺點是操作繁瑣。
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:天津壓力變送器允許誤差，活塞壓力計知識拓展！
PS:Tianjin pressure transmitter allows errors,piston pressure gauge knowledge expansion!
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