北京销售隔膜压力表YTNP-100H DN25法兰布莱迪现货北京销售隔膜压力表YTNP-100H DN25法兰布莱迪现货北京销售隔膜压力表YTNP-100H DN25法兰布莱迪现货
隔膜式系列压力表（配接化学密封），是由一个不同类型的通用压力表与一个隔膜隔离体配接而成的。
在通用型压力表与隔膜隔离体之间还可以配接具有特定要求的连接体。通过这种配接，使一般通用型
的压力表，增加了对特殊腐蚀要求、温度高、粘度大或含有固态浮游物、易凝固介质压力的测量性能。
隔膜式压力表（配接化学密封）在石油化工、制碱、化纤、制药、钢铁、食品等行业测量流体介质压
力时被广泛使用。
Series YTP diaphragm pressure gauge (chemical seals) is composed of a conventional pressure
measuring instrument, a connector and a diaphragm seal. This combination enables a general purpose
pressure gauge to measure media of strong corrosion, high temperature, high viscosity, containing
suspended matter or crystallizing.
Diaphragm gauges are universally used in petrochemical, alkali, chemical fiber, pharmaceutical,
metallurgical, and food industries.
H ·00 - 1结构原理
配接化学密封系列压力表的工作原理如图所示。
隔离膜片在被测介质压力P的作用下产生变形，压缩
内部充填的工作液形成一个相当于P 的压力P’。经
工作液的传导，使压力仪表中的弹性元件自由端产生
相应的变形，并按与之相配接的类别压力仪表工作原
理显示出被测的压力值。
Configuration Principle
This illustration shows the operating principle of the
diaphragm pressure gauge.
The diaphragm is deflected by the pressure of medium
P, and an equivalent pressure P’ is generated.
With transmitting through working fluid, the pressure
P’ deflect the elastic element of a pressure measuring
instrument which thereafter shows the pressurevalue.
弹簧管
Bourdon Tube 压力仪表
Pressure Instrument
工作液
Working Fluid
隔离膜片
Isolation Diaphragm
Level Difference of diaphragm pressure gauge seals liquid
When a diaphragm pressure gauge is mounted with pressure gauge and diaphragm seal at different
positions, the effect of level difference should be taken into consideration (especially for a diaphragm gauge with
capillary). As the illustration shows, with a S.G. of the working fluid at approx. 1, and a level difference of 1m, the
pressure difference is approx. 0.01MPa/cm2.
隔膜式压力表 Diaphragm pressure gauge
Indication
Drop Height Working Fluid
Pressure Applied Part
Level Difference S.G. of Working Fluid Drop Height
隔膜压力表密封液的液位差
配接化学密封系列压力表在安装时
受压部份与通用型压力表处于不同位置
时，(尤其对于采用软管连接的隔膜表) 应
考虑到由于液位差对压力的影响。如图
所示。
(密封工作液比重大体等于1的，落
差1m，压力差约为0.01Mpa/cm 2。