Omega Engineering CDE-45P manual Part 3 Sensor Mounting, Cleaning the Sensor

Omega CDE-45PConductivity Sensor Part 3 –Maintenance & Troubleshooting

Part 3 – Sensor Mounting

3.1Cleaning the Sensor

Keep the sensor as clean as possible for optimum measurement accuracy. Frequency of cleaning depends upon the process solution.

Note: Mechanical cleaning of the electrode surfaces may harm measurement quality if not performed with care. Do NOT use wire brushes, sandpaper and the like to clean any conductivity electrode.

Wipe the measuring end of the sensor with a clean with a clean soft cloth. Then rinse with clean water (distilled or de-ionized if possible). This should remove most contaminate buildup.

If necessary, soak the sensor for several minutes in a mild soap solution. Use a small, extra-soft bristle brush (such as a mushroom brush) to thoroughly clean the electrode surfaces. If surface deposits are not completely removed after performing this step, a dilute acid may be used to dissolve the deposits. Soak for a few minutes, and then rinse the sensor thoroughly with clean water (distilled or de-ionized if possible).

Note: DO NOT soak the sensor in dilute acid solution for more than 5 minutes.

WARNING: ACIDS ARE HAZARDOUS. Always wear eye and skin protection when handling. Follow all Material Safety Data Sheet recommendations. A hazardous chemical reaction can be created when certain acids come in contact with process chemicals. Make this determination before cleaning with any acid, regardless of concentration. DO NOT use Hydrochloric Acid on any stainless steel portion of the sensor.

After cleaning the sensor, check measurement and re-calibrate the sensor.

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