How does the magnetic flow meter for sewage overcome the influence of impurities and corrosive substances in wastewater on measurement accuracy?
Publish Time: 2024-12-04
Impurities and corrosive substances in wastewater have a great influence on the measurement accuracy of the magnetic flow meter for sewage, which may lead to inaccurate measurement or even equipment damage.
1. Choose the right material
Sensor material: Choose corrosion-resistant materials, such as stainless steel 316L, Hastelloy, titanium alloy, etc., which can resist corrosive substances in wastewater.
Lining material: Use corrosion-resistant and wear-resistant lining materials, such as polytetrafluoroethylene (PTFE), ceramics, neoprene, etc., to protect the sensor from chemical corrosion in wastewater.
2. Install the filter
Pre-filter: Install the filter upstream of the magnetic flow meter for sewage to remove solid particles and impurities in the wastewater and reduce the wear on the sensor lining and electrodes.
Regular maintenance: Check and replace the filter regularly to ensure its effective work and prevent blockage from affecting flow measurement.
3. Adjust the flow rate
Optimize the flow rate: Control the flow rate of the wastewater to avoid eddies and bubbles caused by excessive flow rates, which will affect the measurement accuracy. At the same time, too low a flow rate may also cause solid particle deposition, affecting the normal operation of the sensor.
Flow rate range: Select a suitable magnetic flow meter for sewage model to ensure that it can accurately measure within the flow rate range in the wastewater treatment system.
4. Select a suitable electrode
Electrode material: Select corrosion-resistant electrode materials such as platinum, tantalum, etc. to resist corrosive substances in wastewater.
Electrode shape: Using electrodes with special shapes (such as V-shaped and convex electrodes) can reduce solid particle accumulation and improve measurement accuracy.
5. Regular calibration and maintenance
Regular calibration: Regularly calibrate the magnetic flow meter for sewage to ensure its measurement accuracy. Calibration can be performed under laboratory conditions or online according to field conditions.
Maintenance: Regularly check the sensor and connecting parts, clean the electrodes and linings, and ensure that the equipment is in good working condition.
6. Use anti-corrosion coating
Sensor coating: Apply anti-corrosion coating, such as polyurethane, epoxy resin, etc., on the surface of the sensor to enhance its corrosion resistance.
Liner coating: Apply anti-corrosion coating on the surface of the lining material to further enhance the corrosion resistance and wear resistance of the lining.
7. Choose a suitable installation location
Avoid impurities: Try to install the magnetic flow meter for sewage in a location with less impurities in the wastewater treatment system to avoid solid particles and bubbles directly impacting the sensor.
Avoid corrosive areas: Avoid installing the magnetic flow meter for sewage in areas with high concentrations of chemicals in the wastewater treatment system to reduce the risk of corrosion.
8. Use intelligent diagnostic function
Real-time monitoring: Modern magnetic flow meters for sewage are usually equipped with intelligent diagnostic functions, which can monitor the working status and measurement data of the equipment in real time, and discover and solve problems in time.
Data analysis: Through the analysis of measurement data, factors affecting measurement accuracy can be identified, and corresponding measures can be taken to adjust and optimize.
Through the above measures, the influence of impurities and corrosive substances in wastewater on the measurement accuracy of magnetic flow meter for sewage can be effectively overcome, ensuring its reliability and accuracy in complex environments.
