High Precision Digital Pressure Gauge for Industrial Use
| US$10.00-40.00 | 50 Pieces (MOQ) |
Basic Info.
Accuracy
0.1
Display
Number+Pointer
Application
Industrial, Civil
Structure
Threaded Pressure Gauge
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. | |||||||||||
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