1. Regular cleaning
Method: Dip a soft cloth or cotton swab in water or specialized cleaning agent, gently wipe the electrode part, and avoid scratching the electrode with hard objects.
Attention: Clean the electrodes promptly after measurement to prevent measurement errors caused by the attachment of pollutants (such as algae and oil stains); After cleaning, dry it with filter paper to avoid cross contamination.
2. Calibration management
Frequency: Based on the usage scenario, it is recommended to calibrate once a week to once a month; High precision demand scenarios (such as laboratories) require a shorter calibration cycle.
Method: Use standard buffer solutions (such as pH 4.01, pH 7.00, pH 10.01) for two-point calibration to ensure sensor response speed and stability.
Temperature compensation: before calibration, adjust the temperature compensation setting of the sensor to make it consistent with the temperature of the solution to be measured (the pH value of the standard buffer solution is different at different temperatures).
3. Storage and usage environment
Storage: When not in use for a long time, soak the electrode in a 3mol/L KCl solution to avoid drying and electrode aging; The storage environment should be dry, ventilated, and kept away from high temperatures, high humidity, and corrosive substances.
Usage: Avoid soaking the electrode in water for a long time to prevent circuit damage; In case of water splashing or immersion, immediately remove and wipe dry and calibrate.
4. Protective measures
Chemical corrosion: Avoid electrode contact with strong acids, bases, or corrosive substances (such as dehydrated media anhydrous ethanol); Use protective covers or filters when necessary.
Mechanical damage: The electrode is fragile and should be handled with care during installation and cleaning; It is recommended to insert electrodes in the later stage of fermentation tanks and other scenarios to avoid collision damage.
5. Performance inspection and replacement
Inspection: Regularly test the sensor response speed and measurement accuracy. If errors increase or response slows down, handle them promptly.
Replacement: The service life of the electrode is usually 1-2 years. After aging, the matching model needs to be replaced to ensure accurate measurement results.
6. Specialized maintenance of digital sensors
Signal transmission: Check whether the communication interfaces such as RS485 and Modbus are connected properly to avoid signal interference that may cause data abnormalities.
Software update: Regularly upgrade sensor supporting software, optimize functions (such as remote debugging, data storage) and security.
Power off protection: The sensor has a built-in memory that can remember calibration and setting information, and there is no need to reconfigure after power off.