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浅析隔离型压力变送器价格为什么偏贵?

作者:华恒仪表 发布日期: 2019-10-28 二维码分享

       隔离型压力变送器主要是针对特殊的被测量介质使用的,即被测介质从离开设备后就会产生结晶,而使用普通型变送器就需要取出介质,一般就会将导压管和膜盒室堵塞使其不能正常工作,所以必须选用隔离型。隔离型通常作成法兰式安装,即在被测设备上开口加法兰使变送器安装后它的感应膜片是设备壁的一部分,这样它不会取出被测介质,一般不会造成结晶堵塞。

       The isolated pressure transmitter is mainly used for special measured media,that is,the measured medium will crystallize after leaving the device,and the ordinary type of transmitter needs to take out the medium,generally the pressure guiding tube and The bellows chamber is clogged so that it does not work properly,so the isolation type must be used.The isolated type is usually flanged,that is,the flange is opened and flanged on the device to be tested.After the transmitter is installed,its sensing diaphragm is part of the equipment wall,so that it does not take out the measured medium,and generally does not cause crystal blockage.


       当被测介质需求结晶温度较高时,可选用将膜片凸出的结构,这样可将传感膜片插入到设备内部,从而便感应到的介质温度不会降低,这样测量是有保障的,即选用插入式法兰变送器。

       When the measured medium requires a higher crystallization temperature,a structure in which the diaphragm protrudes can be selected,so that the sensing diaphragm can be inserted into the device,so that the temperature of the sensed medium is not lowered,so that the measurement is guaranteed.That is,the plug-in flange transmitter is used.



       隔离型压力或差压变送器的制作复杂,材质要求高,所以它的价格通常是普通型的变送器的3倍。在压力或差压变送器的选用上主要依据为:以被测介质的性质指标为准,以节约资金和便于安装和维护为参考。如被测介质为高黏度易结晶强腐蚀的场合,必须选用隔离型变送器。

       Isolated pressure or differential pressure transmitters are complex to fabricate and require high material requirements,so they are typically three times more expensive than conventional transmitters.The main basis for the selection of pressure or differential pressure transmitters is:based on the nature of the measured medium,to save money and ease of installation and maintenance as a reference.If the measured medium is high viscosity,easy to crystallize and corrode,the isolated transmitter must be selected.


       在选型时要考虑它的介质对膜盒金属的腐蚀,一定要选好膜盒材质,否则使用后很短时间就会将外膜片腐蚀坏,法兰也会被腐蚀坏造成设备和人身事故,所以,材质选择是重中之重。变送器的膜盒材质有普通不锈钢、304不锈钢、316L不锈钢、钽膜盒材质等。

       When selecting the type,consider the corrosion of the medium to the bellows metal.Be sure to choose the material of the bellows.Otherwise,the outer diaphragm will be corroded and the flange will be corroded and damaged due to equipment and personal accidents.Therefore,material selection is the most important.The diaphragm of the transmitter is made of ordinary stainless steel,304 stainless steel,316L stainless steel,and membrane box material.


       在选型时要考虑被测介质的温度,如果温度高一般200~400℃,要选用高温型,否则硅油会产生汽化膨胀,使测量不准。

       In the selection of the temperature of the measured medium should be considered,if the temperature is generally 200~400°C,the high temperature type should be used,otherwise the silicone oil will vaporize and expand,making the measurement inaccurate.


       在选型时要考虑设备工作压力等级,变送器的压力等级必须与应用场合相符合。从经济角度上讲,外膜盒及插入部分材质要合适,但连接法兰可以选用碳钢、镀铬,这样资金会节约很多。

       When selecting the type,the working pressure level of the equipment should be considered.The pressure level of the transmitter must be consistent with the application.From an economic point of view,the material of the outer membrane box and the insert part should be suitable,but the connecting flange can be made of carbon steel or chrome plating,so that the capital will be saved a lot.


       隔离型压力变送器选用是选用螺纹连接形式的,这样节约资金又安装方便。对于普通压力和差压变送器选型,也要考虑被测介质的腐蚀性问题,但使用的介质温度可以不考虑,因为普通型压力变送器是引压到表内,长期工作温度为常温,但普通型使用的维护量要比隔离型大。首先是保温问题,在北方冬季零下,导压管会结冰,使变送器无法工作甚至损坏,这就需要增加伴热和保温箱等。

       The isolated pressure transmitter is selected in the form of a threaded connection,which saves money and is easy to install.For the selection of common pressure and differential pressure transmitters,the corrosiveness of the tested medium should also be considered,but the medium temperature used can be ignored,because the ordinary pressure transmitter is pressurized into the meter and the long-term operating temperature is Normal temperature,but the normal type of maintenance is larger than the isolation type.The first is the insulation problem.In the winter in the north,the pressure guiding tube will freeze,making the transmitter unable to work and even damage,which requires the addition of heat tracing and incubator.



       西安华恒变送器厂家研发出传感器和智能电路板两项核心技术,不仅所有产品的核心部件技术全部掌握,工业自动变送器厂家的精确度也在不断提高,由0.2级提高到0.1级。还可通过对所掌握核心技术进行延伸,变形出测流量、测温度的其他产品。

       Xi'an Huaheng transmitter manufacturers have developed two core technologies of sensors and intelligent circuit boards. Not only the core components of all products are mastered, but the accuracy of industrial automatic transmitter manufacturers is also increasing, from 0.2 to 0.1. . It can also be extended to other products that measure flow and measure temperature by extending the core technology.


      华恒变送器厂家凭借自身拥有的传感器和智能电路板核心技术,可以根据客户要求,低成本对核心技术进行延伸变形,实现个性化产品定制。主要产品有SMART(斯玛特)系列压力变送器、多参数变送器、流量器、温度传感器和物位(液位变送器厂家,为我国电力、石油、化工、冶金、水泥、矿业等行业提供了高性能价格比的工业自动变送器厂家产品。

       With its own sensors and intelligent circuit board core technology,Huaheng transmitter manufacturers can extend and transform core technologies according to customer requirements and achieve personalized product customization.The main products are SMART(Smart)series pressure transmitter,multi-parameter transmitter,flow meter,temperature sensor and level(liquid level transmitter manufacturer,for China's power,petroleum,chemical,metallurgy,cement,mining The industry provides high-performance and price-effective industrial automatic transmitter manufacturers.


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