4MPa Stainless Steel Diaphragm Shock Resistant Pressure Gauge

• Customization: Available
• Measuring Range: Universal Pressure Gauge
• Type: Digital Display
• Connection Type: Axial
• Installation Structure: Direct Mounting
• Features of Measurement Medium: Corrosion Resistant
• Indicating Pressure Reference: General Pressure Gauge
• Transport Package: Boxes and Cartons

Product Description

   

Basic Info.
Place of origin:	Nanpi County, Cangzhou City, Hebei province
Productive capacity:	500,000 pieces/month
Application:	Diaphragm pressure gauges are mainly used in processes such as petrochemicals, alkali production, chemical fibers, pharmaceuticals, and food. They consist of a universal pressure gauge, connecting body, and diaphragm separator. Used when measuring media with strong corrosion, high temperature, high viscosity, easy crystallization, easy solidification, and solid floating particles.
Principle:	When the pressure P of the measuring medium acts on the diaphragm, the diaphragm deforms, compressing the sealing fluid of the pressure measuring system of the pressure instrument,causing it to form a pressure of P - △ P. When the rigidity of thediaphragm is small enough,Δ P is very small, and the pressure formed by the pressure measuring system of the pressure instrument is close to the pressure of the measuring medium.
The Temperature Effect of Diaphragm Gauge
The temperature effect of a diaphragm pressure gauge is related to the expansion coefficient of the sealing fluid, the stiffness of the diaphragm, and the temperature of the compressed area. When the instrument is used with a temperature deviation of 20 ± 5 ºC, the maximum change rate of the displayed  value affected by the temperature should not exceed 0.1 ºC for rigidity and 0.1 ± 0.025 ºC for flexibility (remote connection) (L-pressure transmission conduit length m). When making diaphragm pressure gauges, attention should be paid to selecting suitable sealing working fluids according to different usage environments.
Selection of sealing fluid
To ensure the reliability and safety of diaphragm meters, suitable sealing liquids should be selected according to different applications.
Sealing fluid	Temperature range of  the compressed part			Specific weight g/cm			Body expansion coefficient 1/"C			Purpose
High viscosity silicone oil	-10-200ºC			1.07			0.95×10*			High temperature use
Low viscosity  silicone oil	-30-100ºC			0.94			1.08×10°			Generally used
Glycerol aqueous solution	-5-100ºC			1.27			0.61×10			Food use
vegetable oil	-5-100ºC			0.93			1.03×103			Food use
Fluorine oil	-30-150ºC			1.93			0.75×103			Hydrogen, gas
Corrosion Resistance of Diaphragm Watch
The corrosion resistance of the diaphragm gauge can be ensured by selecting the materials of the diaphragm, flange and sealing gasket in contact with the measuring medium.Diaphragm material: 0CR17Ni12Mo2 (316L) Monel (Cu30Ni70):Hastelloy (H276C); bile (Ta) and fluoroplastics (F4)Flange material: stainless steel 0CR17Ni12Mo2 (316L); stainless steel lined with fluoroplastics(316+F4)Sealing gasket material: nitrile rubber, fluorine rubber, silicone rubber and fluorine plastic.