How should I clean the dirt or scaling on the sensor surface during use of the Magnetic Flow Meter For Sewage/Wastewater?
Publish Time: 2024-08-27
During the use of Magnetic Flow Meter For Sewage/Wastewater, it is crucial to clean the dirt or scaling on the sensor surface to ensure measurement accuracy and normal operation of the equipment. Here are some recommended cleaning methods:
1. Wiping method
Applicable situations: Applicable to cleaning slight dirt or water stains on the sensor surface.
Operation steps:
Use a soft cotton cloth or towel, and avoid using materials containing fiber debris to prevent residue on the sensor surface.
Add an appropriate amount of neutral detergent to warm water (avoid using acidic or alkaline detergents to avoid corroding the sensor).
Gently wipe the sensor surface, and be careful not to use too much force to avoid damaging the sensor.
After wiping, rinse thoroughly with pure water or distilled water to ensure that there is no detergent residue.
2. Water pressure method
Applicable situations: When the sensor surface is contaminated by sediment or rust.
Notes:
Use moderate water pressure for flushing to avoid excessive water pressure causing damage to the sensor.
Before flushing, it is necessary to remove the cable at the sensor interface to prevent water from invading the sensor and causing a short circuit.
After flushing, make sure the inside of the sensor is completely dry to prevent moisture residue from causing corrosion.
3. Immersion method
For inorganic pollution:
Immerse the sensor electrode in 0.1mol/L dilute hydrochloric acid for about 30 minutes, then rinse with pure water.
Then immerse it in 3.5mol/L potassium chloride solution for 6 hours to restore the electrode performance.
For severe pollution (such as oxide film formed on platinum or gold surface):
Use toothpaste to gently polish the surface, then clean it with pure water.
Similarly, immerse it in 3.5mol/L potassium chloride solution for 6 hours before use.
For organic oil stains and oil film pollution:
First clean the surface with a detergent, then rinse it with pure water.
It also needs to be immersed in 3.5mol/L potassium chloride solution for 6 hours before use.
4. Mechanical removal method
Use a mechanical scraper: For dirt that is difficult to remove by chemical methods, a mechanical scraper can be used. This usually includes a scraper with a thin shaft made of stainless steel, which is led out through a hollow electrode, and a mechanical seal is used between the thin shaft and the hollow electrode to prevent the medium from flowing out. When the thin shaft is turned from the outside, the scraper rotates close to the plane of the electrode end to scrape off the dirt.
Note: This method requires careful operation to prevent damage to the sensor surface.
5. Ultrasonic cleaning method
In some high-end applications, ultrasonic cleaning technology may be used. The ultrasonic energy generated by the ultrasonic generator is concentrated on the contact surface between the electrode and the medium, and the ability of ultrasonic waves is used to break up the dirt and achieve the purpose of cleaning. However, this method usually requires professional equipment and operating experience.
When cleaning the dirt or scaling on the surface of the Magnetic Flow Meter For Sewage/Wastewater sensor, the appropriate cleaning method should be selected according to the type and severity of the dirt. Pay attention to safety and equipment protection during operation, and avoid using chemicals or methods that may damage the sensor. At the same time, regular cleaning and maintenance of the sensor can extend its service life and ensure measurement accuracy.
