YTP系列隔膜壓力表
YTP Series Diaphragm Pressure Meter
YTP系列隔膜壓力表簡介
YTP系列隔膜壓力表是由一個不同類型的通用壓力表與一個具有特定要求的由連接體和隔膜隔離體組成的隔離器配接而成的。通過這種配接，使一般通用型的壓力表增加了測量腐蝕性強、溫度高、粘度大或含有固態(tài)浮游物、易凝固的介質(zhì)壓力的能力。
隔膜表主要被用于石油化工、制堿、化纖、染化、制藥、食品和制酷、造紙等工業(yè)部門生產(chǎn)過程中測量流體介質(zhì)壓力。
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.
構(gòu)成示意圖 Internal structure
型號表示 Model designations
標(biāo)記示例：YTP-100B-Z/MG（B）/哈/1MPa/PL50-1.6RF 產(chǎn)品電腦編碼：0310050430
YTP-100B-F不銹鋼壓力表，連接形式為直接，采用工字型法蘭MG，隔離器（法蘭）材料為1Cr18Ni9，膜片材料為哈氏合金，測量范圍0~1MPa，法蘭標(biāo)準(zhǔn)為PL50-1.6RF。產(chǎn)品電腦編碼詳見《隔膜壓力系列儀表選型指南》
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.”
結(jié)構(gòu)原理
當(dāng)測量介質(zhì)的壓力P作用于隔膜，則隔膜產(chǎn)生變形，壓縮壓力儀表測壓系統(tǒng)的密封液，使其形成P-△P的壓力。當(dāng)隔膜的剛性足夠小時，則△P也很小，壓力儀表測壓系統(tǒng)形成的壓力就近于測量介質(zhì)的壓力。
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.
YTP系列隔膜壓力表主要技術(shù)參數(shù) Principal technical parameters
1.隔膜表的溫度特性
由于隔膜表系統(tǒng)填充了密封液作為傳遞壓力的介質(zhì)，則由于密封液的溫度體膨脹系數(shù)，使壓力儀表隨受壓部溫度升高而示值也升高，其溫度影響量與密封液體膨脹系數(shù)、隔膜剛度以及受壓部溫度誤差規(guī)定不大于0.1%/℃。故隔膜壓力儀表總的溫度影響一般是由通用型儀表溫度影響量與隔膜裝置受壓部溫度影響量兩者之和。
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
尤其對于帶軟連接管的隔膜壓力表，由于受壓部與通用型壓力表安裝位置不同，會產(chǎn)生如圖所示的液位差的影響量△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.隔膜表的耐蝕性
隔膜表的耐蝕性可通過合理的選擇與測量介質(zhì)接觸部分的耐蝕性材料材料來保證。
隔膜材料：316（0Cr17Ni12Mo2）；蒙乃爾合金（Cu30Ni70）；哈氏合金（A、B、C）；鉭（Ta）及氟塑料（F4）。由用戶根據(jù)需要進行選擇。
隔離體材料：0Cr17Ni12Mo2（316不銹鋼）；1Cr18Ni9;1Cr18Ni9Ti;不銹鋼內(nèi)襯氟塑料（316+F4）等。由用戶根據(jù)需要進行選擇。
密封墊圈材料：丁晴橡膠；鉛片；氟橡膠；硅橡膠及氟等塑料。由用戶根據(jù)需要進行選擇。
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.法蘭的選擇
目前我國有GB/T（國標(biāo)）、JB/T（部標(biāo)）、HG（化工部）三個法蘭標(biāo)準(zhǔn)，DIN（德國）、JIS（日本）、ANSI（美國）等法蘭標(biāo)準(zhǔn)以編入上述三個標(biāo)準(zhǔn)之中。用戶可對法蘭標(biāo)準(zhǔn)進行選擇，也可以接受用戶其它規(guī)格的特殊訂貨。
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.密封液的選擇
為保證隔膜表使用可靠性和安全性，應(yīng)根據(jù)不同用途選擇合適的密封液。
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.
隔膜裝置形式圖 Dimension of diaphragm device 單位 Unit（ mm）
1.敞開式突面法蘭 Open raised face flange
根據(jù)客戶要求加工法蘭（注明螺紋尺寸、法蘭標(biāo)準(zhǔn)或提供加工圖紙）
flanges may also processed according to clients requirements （with screw
dimension and flange standard marked, or processing drawings）.
2.工字形突面法蘭[代號MG]
工-shaped raised face flange [code name: MG]
量程上限值：≤4MPa
根據(jù)客戶要求加工法蘭（注明螺紋尺寸、法蘭標(biāo)準(zhǔn)或提供加工圖紙）
flanges may also processed according to clients requirements （with
screw dimension and flange standard marked, or processing drawings）.
3.螺紋接頭式[代號ML]
Thread connector [code name ML]
量程上限值：≤60MPa
Upper limit value of measuring range: ≤60MPa
4.螺栓式隔膜隔離器[代號MZ]
Bolt diaphragm isolator [code name MZ]]
測量范圍：1~25MPa
Measuring range: 1~25MPa
Material for diaphragm and diaphragm base: 0Cr17Ni12Mo2[316]
5.均質(zhì)機用隔膜隔離器[代號MH]
Diaphragm isolator for machine use with well-proportioned medium [coded with MH]
6.夾子式隔膜隔離器[代號MC]
Clipper type diaphragm isolator [coded with MH]
自選件Optionals
1、卡箍1 1/2″、2″clamping bands 11 /2” and 2”
2、管接頭1 1/2、2″ pipe fittings 1 ½” and 2”
3、密封圈（材料為硅橡膠、聚四氟乙烯）
sealing ring （made of materials such as silicone rubber and polytetrafluoroethylene）
7.螺母式隔膜隔離器[代號MC]
Nut type diaphragm isolator [coded with MC]
連接器外形尺寸 Connector external dimension
單位Unit（ mm）
見圖
隔膜壓力系列儀表選型指南 Guide for type selection of diaphragm series instruments and meters
關(guān)于隔離膜片部分耐蝕材料的選擇 Options for diaphragm material
