YNTP-60/100/150The series diaphragm pressure gauge is suitable for measuring the medium pressure of highly corrosive, high viscosity, easy crystallization, easy solidification, and high-temperature liquids, gases, or particulate solid particles. It is also necessary to avoid direct entry of the measuring medium into the pressure instrument, prevent sediment accumulation, and ensure easy cleaning.
Diaphragm pressure gauges are mainly used as pressure instruments for measuring fluid media in the production processes of industrial sectors such as petroleum, chemical, synthetic fiber, dyeing, pharmaceuticals, and alkali food.

Secondly:Measuring principle

When measuring the pressure of a mediumPWhen acting on the diaphragm, it deforms and compresses the sealing fluid of the pressure gauge pressure measurement system, causing it to formP-PofPressure, when the rigidity of the diaphragm is small enough, thenPIt is also very small, and the pressure formed by the pressure measurement system of the diaphragm pressure gauge is equal to the pressure of the measuring medium.

Three:Temperature characteristics of diaphragm meter

Due to the fact that the diaphragm gauge system is filled with sealing fluid as the medium for transmitting pressure, it is affected by the temperature of the sealing fluid-The coefficient of volume expansion affects the pressureThe reading of the instrument increases with the temperature of the compressed part, and its temperature effect is related to the expansion coefficient of the sealing liquid, the stiffness of the diaphragm, and the temperature of the compressed part,Especially for pressure instruments with small ranges, the impact is more pronounced. The temperature error of the general compression part is not greater than0.1%/℃Therefore, the diaphragm pressure gaugeThe overall temperature impact of the instrument is generally the sum of the temperature impact of the universal instrument and the temperature impact of the pressure part of the diaphragm device.

Four:Corrosion resistance of diaphragm meter

The corrosion resistance of diaphragm meters can be ensured by selecting appropriate materials for the diaphragm, flange, and sealing gasket in contact with the measuring medium. diaphragmMaterial0Cr7Ni12Mo2（316）； Monel alloy（Cu30Ni70）； Hastelloy alloy（H276C）； Tantalum（Ta）And fluoroplastics（F4）.

Flange material: stainless steel0Cr17Ni12Mo2（316）； Stainless steel lined with fluoroplastic（316+F4）

Sealing gasket material: Nitrile rubber; Fluororubber; Silicone rubber and fluoroplastics.

5： External dimensions