When connecting a Differential pH sensor to the AS950, an error shows up that says "TSensorFsm.cpp 603." How can this be resolved?
AS950 and Differential pH miscommunication
There was a firmware incompatibility issue with the Differential pH sensors manufactured May 18, 2015 or later. This issue has been fixed in AS950 firmware version 1.7, which can be downloaded from the Hach.com website.