GHL DO (dissolved oxygen) Sensors: Is customer calibration possible?

[MacKenna_H]

Hello R2R Community!


I have 5 oxygen sensors deployed in the same vessel of water, and each of the sensors is giving a different reading for %DO.

We have an experiment that is relying on accurate oxygen readings, so how can I improve the accuracy and precision of these sensors?

All of the sensors are reading low when compared with a calibrated YSI ProSolo reading. Some by up to 50%DO

Can someone send directions on how to recalibrate them, or are there any troubleshooting steps I can try?

The oxygen readings are as follows: Oxygen 1 = 63.7%; Oxygen 2 = 78.1%; Oxygen 3 = 62.0%; Oxygen 4= 55.1%; Oxygen 5 = 84.1%;

(Lab grade; Calibrated) YSI ProSolo = 104%

So far, I don't see any options for calibration when running the GHL-Control Center program (PC) in expert mode as a system administrator.

I sent a support ticket to GHL on Monday, and haven't heard back (I understand they may be busy), but I have animals arriving in the lab tonight. So, any help with this issue is greatly appreciated.

Thanks & happy reefing!

 

[Bigfishy1]

I hope this helps
https://www.reef2reef.com/threads/ghl-oxygen-probe.752469/