YTP系列隔膜压力表
YTP Series Diaphragm Pressure Meter

YTP系列隔膜压力表简介

    是由一个不同类型的通用压力表与一个具有特定要求的由连接体和隔膜隔离体组成的隔离器配接而成的。通过这种配接，使一般通用型的压力表增加了测量腐蚀性强、温度高、粘度大或含有固态浮游物、易凝固的介质压力的能力。

    隔膜表主要被用于石油化工、制碱、化纤、染化、制药、食品和制酷、造纸等工业部门生产过程中测量流体介质压力。
 

Brief Introduction:

      YTP series diaphragm pressure meter is assembled with a normal pressure meter of same type and a isolator comprising a connector and diaphragm body which requires specific demands. . Through such assembling  connection, the normal pressure meter is enabled with measurement of pressure of such mediums subject to  solidification that have strong causticity, high temperature, high viscosity, and solid floating objects.

      This instrument is principally used to measure pressures of liquids of such industrial departments as petroleum, basic industry, chemical fiber, dyestuff, pharmacy, food stuff, and vinegar in production process.

构成示意图 Internal structure

型号表示 Model designations

    标记示例：YTP-100B-Z/MG（B）/哈/1MPa/PL50-1.6RF 产品电脑编码：0310050430

YTP-100B-F不锈钢压力表，连接形式为直接，采用工字型法兰MG，隔离器（法兰）材料为1Cr18Ni9，膜片材料为哈氏合金，测量范围0~1MPa，法兰标准为PL50-1.6RF。产品电脑编码详见《隔膜压力系列仪表选型指南》

     Mark: YTP-100B-F/Z/MG（B）/哈/1MPa/PL50-1.6RF

     Computer code of the product:0310050430

     For YTP-100B-F stainless steel pressure meter, it is directly connected with I form flange MG. The material isolator, or flange, is 1Cr18Ni9; and the diaphragm is made of Hatscheks alloy. Its measuring scope is 0~1MPa. And its flange standard is PL50-1.6RF. For further information on computer code, please see the “Guide for type selection of diaphragm pressure series instruments and meters.”

结构原理

    当测量介质的压力P作用于隔膜，则隔膜产生变形，压缩压力仪表测压系统的密封液，使其形成P-△P的压力。当隔膜的刚性足够小时，则△P也很小，压力仪表测压系统形成的压力就近于测量介质的压力。

Structure and principle

When the pressure of medium to be tested, or P, acts on diaphragm, deformation of diaphragm occurs accordingly, which compresses the sealing liquid of this instruments pressure measuring system, so as to form a pressure of P-△P. When the rigidity of the diaphragm is small enough to make a small △P, the pressure formed in the measuring system of this pressure meter can be regarded as an similar equivalent pressure to the tested mediums. 

主要技术参数 Principal technical parameters

    1.隔膜表的温度特性

    由于隔膜表系统填充了密封液作为传递压力的介质，则由于密封液的温度体膨胀系数，使压力仪表随受压部温度升高而示值也升高，其温度影响量与密封液体膨胀系数、隔膜刚度以及受压部温度误差规定不大于0.1%/℃。故隔膜压力仪表总的温度影响一般是由通用型仪表温度影响量与隔膜装置受压部温度影响量两者之和。

      Temperature features of the diaphragm meter

      As the system of diaphragm meter is padded with sealing liquid for transmission of pressure, due to the temperature coefficient of volume expansion of the sealing liquid, because the temperature increase of pressed parts of the pressure meter will be displayed as indicating value, its temperature influence quantity and coefficient of volume expansion of the sealing liquid, diaphragm rigidity and error in temperature of pressed part are not allow to exceed 0.1%/℃ according to regulations. Therefore, for diaphragm pressure meter, its overall impact caused by temperature generally is a sum of the temperature influence quantity of universal instrument and that of the temperature of diaphragm devices pressed parts.

    2.隔膜表液位差

    尤其对于带软连接管的隔膜压力表，由于受压部与通用型压力表安装位置不同，会产生如图所示的液位差的影响量△P。

Diaphragm meters head of liquid

Especially for those diaphragm pressure meter with hose connector, due to difference of pressed parts and installing locality where the universal pressure meter, △P, or influence quantity caused by head of liquid, will be generated and shown in the figure.

    3.隔膜表的耐蚀性

    隔膜表的耐蚀性可通过合理的选择与测量介质接触部分的耐蚀性材料材料来保证。

    隔膜材料：316（0Cr17Ni12Mo2）；蒙乃尔合金（Cu30Ni70）；哈氏合金（A、B、C）；钽（Ta）及氟塑料（F4）。由用户根据需要进行选择。

    隔离体材料：0Cr17Ni12Mo2（316不锈钢）；1Cr18Ni9;1Cr18Ni9Ti;不锈钢内衬氟塑料（316+F4）等。由用户根据需要进行选择。

    密封垫圈材料：丁晴橡胶；铅片；氟橡胶；硅橡胶及氟等塑料。由用户根据需要进行选择。

    Erosion resistance of the diaphragm meter

Diaphragm meters erosion resistance may be protected through appropriate selection of diaphragm that touches the medium to be measured, flange, and material of packing plate.

    Material for diaphragm: 0Cr17Ni12Mo2 （316）, Monel metal （Cu30Ni70）, Hatschek alloy （H276C）, tantalum （Ta）, and fluoroplastics （F4）.

    Material for flange: stainless steel 0Cr17Ni12Mo2 （316）, flouroplastics with stainless steel lined inside （316+F4）.

    Material for packing plate: butadieneacrylonitrile rubber, lead plate, silicone rubber, and flouroplastics.

    4.法兰的选择

    目前我国有GB/T（国标）、JB/T（部标）、HG（化工部）三个法兰标准，DIN（德国）、JIS（日本）、ANSI（美国）等法兰标准以编入上述三个标准之中。用户可对法兰标准进行选择，也可以接受用户其它规格的特殊订货。

    Selection of flange

    Frequently used standard for flange series is compiled according to GB （P.R. China）, HGJ （Ministry of Chemical Industry）, DIN （Germany）, JIS （Japan）, ANSI （USA）, and so on, together with domestic actual situation of application, for the convenience of clients selection. Customarized special orders for alternative specification are also accepted and welcome.

    5.密封液的选择

    为保证隔膜表使用可靠性和安全性，应根据不同用途选择合适的密封液。

    Selection of sealing liquid

    For the purpose to protect the reliability and security of the diaphragm meter in use, applicable sealing liquid for specific use shall be selected appropriay. 

 隔膜装置形式图 Dimension of diaphragm device  单位 Unit（ mm）

    1.敞开式突面法兰       Open raised face flange

    根据客户要求加工法兰（注明螺纹尺寸、法兰标准或提供加工图纸）

flanges may also processed according to clients requirements （with screw

dimension and flange standard marked, or processing drawings）.

    2.工字形突面法兰[代号MG]

    工-shaped raised face flange [code name: MG]

    量程上限值：≤4MPa

    根据客户要求加工法兰（注明螺纹尺寸、法兰标准或提供加工图纸）

      flanges may also processed according to clients requirements （with

screw dimension and flange standard marked, or processing drawings）.

      3.螺纹接头式[代号ML]

      Thread connector [code name ML]

      量程上限值：≤60MPa

      Upper limit value of measuring range: ≤60MPa

      4.螺栓式隔膜隔离器[代号MZ]

      Bolt diaphragm isolator [code name MZ]]

      测量范围：1~25MPa

      Measuring range: 1~25MPa

      Material for diaphragm and diaphragm base: 0Cr17Ni12Mo2[316]

      5.均质机用隔膜隔离器[代号MH]

       Diaphragm isolator for machine use with well-proportioned medium [coded with MH]

      6.夹子式隔膜隔离器[代号MC]

      Clipper type diaphragm isolator [coded with MH]

      自选件Optionals

      1、卡箍1 1/2″、2″clamping bands 11 /2” and 2”

      2、管接头1 1/2、2″ pipe fittings 1 ½” and 2”

      3、密封圈（材料为硅橡胶、聚四氟乙烯）

       sealing ring （made of materials such as  silicone rubber and polytetrafluoroethylene）

      7.螺母式隔膜隔离器[代号MC]

       Nut type diaphragm isolator [coded with MC]

连接器外形尺寸 Connector external dimension

单位Unit（ mm）

见图

隔膜压力系列仪表选型指南 Guide for type selection of diaphragm series instruments and meters

关于隔离膜片部分耐蚀材料的选择 Options for diaphragm material

订货须知 Ordering instructions

订货时须注明：产品电脑编码、型号、名称、精确度、测量范围。如特殊要求，请注明技术要求。

Ordering instructions: The product computer code ,types, names, accuracy grades, and measuring ranges .must be clearly noted. In case of special requirements, technical requirements shall be clearly noted specifications on the back of the order on ordering goods.