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Randall KennedyAug 16, 2025
Why does the display not stop flashing during calibration of my Hach H160?
- IipageAug 16, 2025
If the display doesn't stop flashing during calibration of your Hach Handhelds device, it could be due to dirty probe sensor surfaces or the probe needing reconditioning. Follow the cleaning and reconditioning instructions. It might also be that the referring junction is not flowing, or the buffers may be contaminated or expired, in which case you should replace the DO probe membrane and fill solution. If the error persists, replace the probe. Interference from direct sunlight can also cause this issue, so attach a temperature sensor to the 3.5 mm phono jack, as DO readings are highly temperature dependent and a temperature sensor must be attached. If trouble persists, the probe may have reached the end of its useful life and may need to be replaced.