隔離型壓力變送器主要是針對特殊的被測量介質使用的，即被測介質從離開設備后就會產生結晶，而使用普通型變送器就需要取出介質，一般就會將導壓管和膜盒室堵塞使其不能正常工作，所以必須選用隔離型。隔離型通常作成法蘭式安裝，即在被測設備上開口加法蘭使變送器安裝后它的感應膜片是設備壁的一部分，這樣它不會取出被測介質，一般不會造成結晶堵塞。

       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.

       當被測介質需求結晶溫度較高時，可選用將膜片凸出的結構，這樣可將傳感膜片插入到設備內部，從而便感應到的介質溫度不會降低，這樣測量是有保障的，即選用插入式法蘭變送器。

       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.

       隔離型壓力或差壓變送器的制作復雜，材質要求高，所以它的價格通常是普通型的變送器的3倍。在壓力或差壓變送器的選用上主要依據為：以被測介質的性質指標為準，以節約資金和便于安裝和維護為參考。如被測介質為高黏度易結晶強腐蝕的場合，必須選用隔離型變送器。

       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.

       在選型時要考慮它的介質對膜盒金屬的腐蝕，一定要選好膜盒材質，否則使用后很短時間就會將外膜片腐蝕壞，法蘭也會被腐蝕壞造成設備和人身事故，所以，材質選擇是重中之重。變送器的膜盒材質有普通不銹鋼、304不銹鋼、316L不銹鋼、鉭膜盒材質等。

       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.

       在選型時要考慮被測介質的溫度，如果溫度高一般200～400℃，要選用高溫型，否則硅油會產生汽化膨脹，使測量不準。

       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.

       在選型時要考慮設備工作壓力等級，變送器的壓力等級必須與應用場合相符合。從經濟角度上講，外膜盒及插入部分材質要合適，但連接法蘭可以選用碳鋼、鍍鉻，這樣資金會節約很多。

       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.

       隔離型壓力變送器選用是選用螺紋連接形式的，這樣節約資金又安裝方便。對于普通壓力和差壓變送器選型，也要考慮被測介質的腐蝕性問題，但使用的介質溫度可以不考慮，因為普通型壓力變送器是引壓到表內，長期工作溫度為常溫，但普通型使用的維護量要比隔離型大。首先是保溫問題，在北方冬季零下，導壓管會結冰，使變送器無法工作甚至損壞，這就需要增加伴熱和保溫箱等。

       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.

       西安華恒變送器廠家研發出傳感器和智能電路板兩項核心技術，不僅所有產品的核心部件技術全部掌握，工業自動變送器廠家的精確度也在不斷提高，由0.2級提高到0.1級。還可通過對所掌握核心技術進行延伸，變形出測流量、測溫度的其他產品。

       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.

      華恒變送器廠家憑借自身擁有的傳感器和智能電路板核心技術，可以根據客戶要求，低成本對核心技術進行延伸變形，實現個性化產品定制。主要產品有SMART（斯瑪特）系列壓力變送器、多參數變送器、流量器、溫度傳感器和物位（液位變送器廠家，為我國電力、石油、化工、冶金、水泥、礦業等行業提供了高性能價格比的工業自動變送器廠家產品。

       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.