Why does YSI EXO2 turbidity sensor gives negative values in seawater?

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Younes Boundir

Hi.

Is the sensor intergated to a multiparameter?? if yes, just disconnect and connect again, and it shoub be working if the other parameters are ok.

Regards. Y

Kiprotich Kiptum

It could be because of dust during calibration which means you are calibrating at a value say 2 NTU and when you go to clear water like sea water, it might bring negative values.

Laith Faisal Lazem

Dear Mohanad Mushtaha,

The attached file, I hope it helps you to identify the reason.

Best regards

https://www.fondriest.com/pdf/ysi_exo_turbidity_manual.pdf