Key Notes In Model Selection Of Differential Pressure Gauges
一、 概要 summary
    我公司生产的差压压力表系列产品是在引进美国先进技术的基础上，并借鉴德国成型品种的优点，由国内优秀的技术专家加以改进，逐渐形成了精度高，品种全，应用广的国内名牌产品，在海洋石油、化工、电力水电、机械、冶金等诸多领域享有盛誉。
    Our company's differential pressure gauges product line is based on advanced technologies introduced from the United States, incorporating the good qualities from leading German products, then improved upon by leading domestic technical experts to gradually form a famous domestic brand product line which offers a complete line of products, is highly accurate and also widely applied in many areas including offshore oil industry, chemical industry, electric and water industries, machinery industry, metallurgy industry and many others.

二、定义 Definition
    差压表是用来检测两个检测点的压力差值，直接在仪表表盘上指示出差压值的机械式压力表。
    Differential pressure gauges is used to test the pressure difference between two points, it is a mechanical pressure gauge that can directly indicate the pressure difference on the instrument meter.
静压是差压表两个检测点所在管道内的设计压力。它是差压压力表选型时必需的数据。
Static pressure is the designed pressure difference within the pipeline between two testing points. It is a necessary date when selecting different types of pressure gauges.

三、选型 Model Selection
    差压压力表的的选型主要看量程、静压和两者之间的比例关系。根据以上原则，差压压力表可分为四大类：
    Differential pressure gauges model selection primarily looks at the following key features：measuring range, static pressure and the ratio between the two. According to this concept, differential pressure gauges are divided into four categories：
（1） 微差压表 Low Differential Pressure Gauges
型号(Type)：YCBF63/100/150-A
    适用于测量干燥且无腐蚀气体的差压压力。一般应用在锅炉通风设备，气体管道，燃烧装置及其它类似设备上。
Suitable for testing differential pressure of dry and non-corrosive gases. Normally used in boiler ventilation systems, gas pipes, incendiary devices and other similar equipments.
*量程（Ranges）：0～1.6～2.5…..25～40（kPa）
*最大静压（Max. Static Pressure）：100kPa
*表盘直径（Nominal Diameter）：φ63；φ100；φ150
*精度（Accuracy）：±2.5%
*工作温度：最高耐温80℃
Operating Temperature：MAX. 80℃
*表壳材质(Case Material)：304SS，316SS
*测量元件材质(Measuring Element Material )：铜合金(Copper Alloy)；304SS；316SS ；316LSS
*接口：（＋）端接口接高压，（－）端接口接低压
Connection:（＋）high pressure，（－）low pressure
M14×1.5；M20×1.5；NPT1/2″；NPT1/4″；G1/2″；
G1/4″；可按客户要求订制(Other on request)
*防护等级(Weather Protection)：IP56
*安装方式(Mounting)：径向带边(Bottom Connection Back Flange)；轴向 (Back Connection)

*特殊项(Special Versions)：
带电接点(With Electrical Contactor)；
配接不锈钢三（五）阀组
(With Three Valves Or five Valves )；

（2） 双管差压表
Double Bourdon Tube Series Differential Pressure Gauges
    型号(Type)：YCBF100/150-B
    适用于测量不结晶、不凝固、对不锈钢不起腐蚀作用的液体、气体的压力。
Suitable for the gaseous or liquid media that will not crystallize、solidify or corrode the stainless steel.
量程（Ranges）：0～0.1～0.16….. 4～6～10～16～25（MPa）
最大静压（Max. Static Pressure）：比对应量程高两个标准等级压力。例如：量程为0～1.6Mpa，高两个标准等级压力是2.5Mpa和4Mpa，则最大静压可确定为4Mpa。Max. Static Pressure ratio corresponding range shall exceed two standard pressure, for example, the range is 0～1.6Mpa, and two standard pressure is 2.5Mpa and 4Mpa, then Max. Static Pressure shall be 4MPa.
*表盘直径（Nominal Diameter）：φ150、φ100
*精度（Accuracy）：±1.5%；±2.5%
*工作温度：最高耐温160℃（加散热装置可达350℃）
Operating Temperature：MAX. 160℃
(Adding Radiator MAX. 350℃)
*表壳材质(Case Material)：304SS，316SS
*测量元件材质(Measuring Element Material )：
304SS；316SS；316LSS
*接口：（＋）端接口接高压，（－）端接口接低压
Connection:（＋）high pressure，（－）low pressure
M20×1.5；NPT1/2″；G1/2″；可按客户要求订制(Other on request)
*防护等级(Weather Protection)：IP56；IP67
*安装方式(Mounting)：
径向带边(Bottom Connection Back Flange)
轴向带边(Back Connection Front Flange)

*特殊项(Special Versions)：
带电接点(With Electrical Contactor)；
配接不锈钢三（五）阀组(With Three Valves Or five Valves )；
表头填充防震液（Filling liquid）；
螺纹或法兰毛细管联接（Using thread or flange capillary tube）；

（3） 双波纹管差压表
Double Bellows Tube Series Differential Pressure Gauges
    型号(Type)：YCBF100/150-C
适用于测量不结晶、不凝固、对不锈钢不起腐蚀作用的液体、气体的压力。Suitable for the gaseous or liquid media that will not crystallize、solidify or corrode the stainless steel.
*量程（Ranges）：0～25～40（kPa）
最大静压（Max. Static Pressure）：1MPa ；
    0～60～100～160～250～400～600（kPa）
最大静压（Max. Static Pressure）：1.6Mpa；
*表盘直径（Nominal Diameter）：φ150、φ100
*精度（Accuracy）：±1.5%；±2.5%
*工作温度：最高耐温160℃（加散热装置可达350℃）
Operating Temperature：MAX. 160℃
(Adding Radiator MAX. 350℃)
*表壳材质(Case Material)：304SS，316SS
*测量元件材质(Measuring Element Material )：
304SS；316SS ；316LSS
*接口：（＋）端接口接高压，（－）端接口接低压
Connection:（＋）high pressure，（－）low pressure
M20×1.5；NPT1/2″；G1/2″；可按客户要求订制
(Other on request)
*防护等级(Weather Protection)：IP56；IP67
*安装方式(Mounting)：径向带边(Bottom Connection Back Flange)；轴向带边(Back Connection Front Flange)

*特殊项(Special Versions)：
带电接点(With Electrical Contactor)；
配接不锈钢三（五）阀组(With Three Valves Or five Valves )；
表头填充防震液（Filling liquid）；
螺纹或法兰毛细管联接（Using thread or flange capillary tube）；
径向带边的安装方式中接头可分两种形式： The method for mounting bottom Connection Back Flange is that socket joint can divide into two form：
径向平行和接头成90°夹角安装；
radial parallelism and joint shall be installed at an included angle of 90°；

（4） 高静压差压表
    High Static Pressure Series Differential Pressure Gauges
型号(Type)：YCBF150-D
适用于测量不结晶、不凝固、对不锈钢不起腐蚀作用的液体、气体的压力。Suitable for the gaseous or liquid media that will not crystallize、solidify or corrode the stainless steel.
①型号(Type)：YCBF150-D/M
*量程（Ranges）：0～40….400～600（kPa）
*最大静压（Max. Static Pressure）：1.6MPa～30MPa ；
②型号(Type)：YCBF150-D/C
*量程（Ranges）：0～100～160～250～400～600（kPa）
*最大静压（Max. Static Pressure）：10MPa ；

*表盘直径（Nominal Diameter）：φ150
*精度（Accuracy）：±1.5%；±2.5%
*工作温度：最高耐温80℃
Operating Temperature：MAX. 80℃
*表壳材质(Case Material)：304SS，316SS
*测量元件材质(Measuring Element Material )：304SS；316SS；316LSS
*接口：（＋）端接口接高压，（－）端接口接低压
Connection:（＋）high pressure，（－）low pressure
M20×1.5；NPT1/2″；G1/2″；可按客户要求订制
(Other on request)
*防护等级(Weather Protection)：IP56；IP67
*安装方式(Mounting)：径向带安装支架
(Optional Pipe Mounting Pressure Gauge Support)

*特殊项(Special Versions)：
带电接点(With Electrical Contactor)；
配接不锈钢三（五）阀组(With Three Valves Or five Valves )；
表头填充防震液（Filling liquid）；
螺纹或法兰毛细管联接（Using thread or flange capillary tube）；
以上四类差压压力表基本上能满足目前市场上的选型需求，而且每大类产品都在不断的完善创新中。
    The four categories of differential pressure gauges could basically meet the current market demands, and every category is undergoing continuous improvements and innovations.
四、订购注意 Ordering Information
    订货时须注明产品的型号、精度等级、测量范围、最大静压、材质、连接方式及是否装配阀组。
如果为特殊介质，请提供介质的相关数据以供厂家参考。
    When placing order, please clearly indicate product model, precision grade, measurement range, maximum static pressure, material quality, connecting method and whether valve assembly is involved.
If special medium is used, please provide relevant data about the medium as reference material to the manufacturer.