User Guide

• No Slope:

- Check the electrode for cracks in glass stem or bulb

(replace the electrode if cracks are found).

- Make sure cable and connections are not damaged

nor lying in a pool of water or solution.

• Slow Response/Excessive Drift: Soak the tip in Hanna

Solution HI 7061 for 30 minutes, rinse thoroughly in

distilled water and then follow the Cleaning Procedure

above.

• For ORP Electrodes: polish the metal tip with a lightly

abrasive paper (paying attention not to scratch the sur-

face) and wash thoroughly with water.

Note With industrial applications, it is always recommended to

keep at least one spare electrode handy. When anomalies

are not resolved with a simple maintenance, change the

electrode (and recalibrate the controller) to see if the prob-

lem is alleviated.