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How long can the electrodes of an electromagnetic flowmeter be used? The normal service life of electromagnetic flowmeter electrodes can reach 5-10 years, which is closely related to factors such as medium, environment, and maintenance. 1. The influence of medium characteristics on electrode life Corrosivity: Corrosive media such as strong acids and bases can accelerate the loss of electrode materials. Even if corrosion-resistant materials such as Hastelloy or tantalum are used, their performance will still decline after long-term use. Wear resistance: Media containing solid particles (such as slurry, pulp) can cause electrode surface wear due to differences in particle size, hardness, and concentration, and in severe cases, directly lead to electrode failure
2. Key temperature range of working environment: Long term high temperature can accelerate electrode material aging, while low temperature may affect sealing, leading to medium infiltration or electrode icing damage. Humidity and gas: Corrosive gases such as hydrogen sulfide and chlorine commonly found in chemical sites can corrode electrodes, and humid environments can exacerbate metal oxidation reactions.
3. The core role of installation and maintenance is correct. Proper installation: Insufficient levelness or poor grounding of flow meters can cause electrode measurement deviation, and long-term abnormal operation may shorten electrode life.
. Regular maintenance: Distilled water and liquid measuring water are used daily to clean the surface attachments of the electrode. During shutdown, the electrode needs to be disassembled and soaked in a saturated solution for storage, which can significantly delay electrode loss.2. Is the gas mass
3. Technical parameters of gas flowmeter
Technical parameters of gas flowmeter are as follows
1. Measurement range: Under standard conditions (20 ℃, 101.33KPa), the measurable gas flow range is (0.05-80) Nm/s
2. Applicable medium: Suitable for measuring most clean gases except acetylene gas
3. Temperature adaptability: The ambient temperature is between -40 ℃ and+60 ℃, and the medium temperature can withstand -10 ℃ to+200 ℃
4. Accuracy and repeatability: The reading accuracy reaches ± 1%, and the repeatability at full range is ± 0.5%
5. Output signal: Provides instantaneous current 4-20mA DC signal, maximum load of 600 Ω, supports RS232 and RS485 communication differential mode, response speed less than 1 second
6. Power supply requirement: 24VDC power supply, voltage fluctuation range of ± 10%
7. Mechanical connection: adopts 3/4 NPT Stainless steel fasteners, standard probe length is 800mm, can be customized for special requirements
8. Straight pipe section requirements: There are no strict regulations on the length of straight pipe sections, which can be selected according to actual installation needs. 9. Pressure loss: The pressure loss generated by the flowmeter during operation can be ignored. 10. Working pressure
1.6MPa is the maximum working pressure that the flowmeter can withstand. 11. Display function: The on-site display adopts LED, with the upper row displaying instantaneous flow rate with 4 characters per line, and the lower row displaying cumulative flow rate, supporting switching between imperial or metric units. 12. Data protection: Accumulated traffic data is stored in EEROM, which can be saved for hundreds of
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