Compared with ordinary pressure gauges, the advantages of diaphragm pressure gauges
与一般压力表的不同之处在于，用一般压力表测量压力时，被测量的工作介质是直接进人弹簧管内的． The difference between a diaphragm pressure gauge and a general pressure gauge is that when the pressure is measured with a general pressure gauge, the measured working medium directly enters the spring tube. When measuring with a diaphragm pressure gauge, the measured working medium
The mass cannot enter the spring tube. There are two benefits to this
(1) The most commonly used pipes for manufacturing spring pipes are brass pipes, tin bronze pipes, lcrl8N stainless steel pipes, and SUS316 stainless copper pipes. As other corrosion-resistant materials such as pure titanium, pure tantalum, hastelloy, monel gold, etc.
Due to the limited use, the purchase of pipes is not easy, but the strips used to make membranes are much easier to purchase.
(2) When measuring the pressure of high-viscosity, easy-to-crystal, and easy-to-solidify media, due to the isolation of the diaphragm, the normal requirements of the instrument can be guaranteed.
Diaphragm pressure gauge is specially designed for petroleum, chemical, food and other departments. During the production process, it measures the pressure of liquid media that is corrosive, high viscosity, easy to crystallize, contains solid particles, and has a relatively high temperature.
本身有着许多的特点，简单来说说它的有特色的特点： Diaphragm pressure gauge itself has many characteristics, in short, its unique characteristics:
1. Temperature characteristics of diaphragm pressure gauge
Since the diaphragm meter system is filled with a sealing liquid as a medium for transmitting pressure, the temperature meter's expansion coefficient of the sealing liquid causes the pressure meter to display a value that increases with the temperature of the pressured part.
The expansion coefficient, diaphragm stiffness, and temperature error of the pressure part are specified to be not more than 0.1% / ° C.
2. Liquid level difference on diaphragm surface
As for the diaphragm pressure gauge with a soft connection pipe, the pressure receiving part is different from the installation position of the universal pressure gauge.
3. Corrosion resistance of diaphragm watch
The corrosion resistance of the diaphragm meter can be ensured by the reasonable selection of the corrosion resistant material material in contact with the measurement medium. The diaphragm material is selected by the user as needed.
4. Selection of sealing fluid
In order to ensure the reliability and safety of the diaphragm pressure gauge, a suitable sealing fluid should be selected according to different uses.
SF-YMF diaphragm pressure gauge is suitable for measuring the pressure of strong corrosion, high temperature, high viscosity, easy to crystallize, easy to solidify and solid floating medium, and for some measuring media can not directly enter the general instrument and easy to clean and prevent
In the case of pressure detection in the case where the accumulation of sediment is kept, a diaphragm meter consisting of a diaphragm isolator and a general-purpose pressure instrument must be used.
Diaphragm gauge is mainly used for pressure detection in the production process of petroleum, chemical, pharmaceutical, food, textile and other industrial sectors.
由各种通用型压力仪表和不同结构的隔膜隔离器组成一个封闭系统，内充密封液。 Diaphragm pressure gauges consist of a variety of general-purpose pressure meters and diaphragm isolators of different structures to form a closed system filled with sealing fluid. When the pressure of the measured medium acts on the diaphragm, the diaphragm deforms and compresses the closed system
Liquid in the seal. Due to the inherent properties of the sealing liquid, the elastic elements in the pressure instrument have corresponding elastic deformation and displacement, and the pressure value is displayed by the indicating device. When the stiffness of the diaphragm is small enough, the pressure indicated by the pressure gauge
Close to the pressure value of the measured medium.