pH/ORP, Conductivity, Oxygen, Ozone, or Chlorine 2-Wire Transmitter (5081)
The Model 5081 family of transmitters can be used to measure pH, ORP, conductivity (using either contacting or toroidal sensors), resistivity, oxygen (ppm and ppb level), free chlorine, total chlorine, and ozone in a variety of process liquids. The 5081 is compatible with most Rosemount Analytical sensors. See the Specification sections for details.
Data Sheet

pH/ORP, Conductivity, Oxygen, Ozone, or Chlorine 2-Wire Transmitter (XMT)
The Solu Comp Model Xmt family of transmitters can be used to measure pH, ORP, conductivity (using either contacting or toroidal sensors), resistivity, oxygen (ppm and ppb level), free chlorine, total chlorine, monochloramine and ozone in a variety of process liquids. The Xmt is compatible with most Rosemount Analytical sensors.
Data Sheet