Electromagnetic flowmeter selection manual| Changping ultrasonic flowmeter manufacturer

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What parameters can be used to select an electromagnetic flowmeter?

Electromagnetic flowmeter manufacturers tell you that electromagnetic flowmeters should be selected in this way

(1) Process pipe diameter and flow range - determine the flowmeter diameter and whether a reducer is needed.

(2) Environmental working condition elements: protection level, explosion-proof requirements, power supply voltage, process pipeline material (metal and insulated pipelines) - determine the requirements for grounding flanges.

(3) Physical and chemical properties of the tested medium: conductivity, temperature, pressure, presence of bubbles, solid particle composition, corrosiveness - determine the electrode material, type, and lining material.

(4) Requirements for instrument structure - integrated, split selection, split type should provide cable length requirements.

(5) Accuracy requirements for instruments - Determine the specifications for using converters.

(6) Requirements for instrument output signals, display content, communication interfaces, and self diagnostic functions - determine the converter model.

(7) Psychological price selection principle for instrument prices: Ensure that the working conditions of the measurement site are met; Meet the accuracy and functional requirements for instrument use; Strive for affordable and moderate prices.

(8) Selection of electrode material for electromagnetic flowmeter: Molybdenum containing stainless steel SS316L/316Ti: mainly used for weak corrosive acid, alkali, salt solution such as domestic and industrial water, raw water, sewage, dilute acid, dilute alkali, etc. Hastelloy C and Hastelloy B: weak acid, wea

Electromagnetic flowmeter selection manual

k base. Titanium: It can withstand corrosion from seawater, various chlorides and hypochlorites, oxidizing acids (including fuming nitric acid), organic acids, alkalis, etc. It is not resistant to corrosion from relatively pure reducing acids (such as sulfuric acid, hydrochloric acid), but its acid resistance is greatly reduced when the acid contains oxidants. Tantalum: It has excellent corrosion resistance, similar to glass, and can withstand almost all chemical media (including boiling point hydrochloric acid, nitric acid, and sulfuric acid below 175 ℃) except hydrofluoric acid and alkali. Not resistant to corrosion in alkali. Platinum iridium: It has a wide range of corrosion resistance properties. Low noise electrode: Available in Hastelloy or SS316 materials, suitable for slurries and fiber media. (9) The selection of electromagnetic flowmeter lining should be based on the corrosiveness, wear resistance, and temperature sensitivity of the measured medium. Hard rubber and chloroprene rubber can withstand general weak acid and alkali corrosion, with a temperature resistance of 80 ℃. chloroprene rubber has wear resistance, while polytetrafluoroethylene can almost withstand strong acid and alkali corrosion except for hot phosphoric acid. The medium temperature can reach 180 ℃, but it is not resistant to wear. Polyurethane rubber has good wear resistance, but is not resistant to acid and alkali corrosion. The temperature resistance is also poor, with a medium temperature below 65 ℃. At our site, most of the temperatures are high, so we mostly use lining made of polytetrafluoroethylene material.

2. Detailed description of Siemens electromagnetic flowmeter parameter configuration

The parameter configuration

Electromagnetic flowmeter selection manual

What parameters can be used to select an electromagnetic flowmeter?

2. Detailed description of Siemens electromagnetic flowmeter parameter configuration

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