Determining if an ORP sensor is an analog or digital version
Identification for ORP sensor as analog or digital version.
Hach analog online process ORP sensor model numbers will start with 20, RD, or RC. The digital ORP sensor model numbers would start with DRD, or DRC. Analog ORP sensors can also be connected to a digital controller by using a digital gateway. The appropriate digital gateway model would depend on the type of digital controller it would be connected to.