InstrumentsASTI TransmittersRosemount Transmitters Save as PDF pH, ORP, Ion Selective (ISE), Conductivity & Dissolved Oxygen (DO) Inline Analyzers, Controllers & Transmitters Smart Digital pH, ORP, Dissolved Oxygen (D.O.), Ion Selective (ISE) & Conductivity (EC) Measurement, Control & Datalogging Systems with Remote Access ASTI Model 3TX Modular Line of pH, ORP, ISE, DO & Conductivity Transmitters & Controllers with Datalogging Rosemount 56 Single or Dual Channel pH / ORP / ISE / Conductivity Analyzer & Transmitter ASTI Model 2TX Isolated 2-Wire pH & ORP Transmitter Rosemount 1056 Single or Dual Channel pH / ORP / ISE / Conductivity Analyzer & Transmitter Rosemount 1057 Single, Dual or Triple Channel pH / ORP / ISE / Conductivity Analyzer & Transmitter ASTI Model 4TX pH & ORP Meter, Analyzer & Controller Rosemount 1066 Two-Wire Loop-Powered pH/ORP & Conductivity Analyzer with HART & FieldBus Rosemount 5081 pH / ORP Transmitter, Analyzer & Controller