Here's the google on sc202: SC202 EXA SC202 2-Wire Conductivity Analyzer Flexibility, reliability and low maintenance are among the benefits provided by the EXA SC202 conductivity analyzer. Designed to meet the particular requirements of measuring conductivity and resistivity in the modern industrial environment, it contains many features to ensure the best precision whatever the application. The transmitter is housed in a robust IP65 field mountable case and combined with the easy and clear LCD makes the SC202 a complete industrial transmitter. The logbook can be used to record events like calibrations and diagnostic messages. A wide variety of temperature compensation possibilities (NaCl according to IEC 746-3, manual TC, preprogrammed matrices and a free programmable 5x5 matrix), provide a high-accuracy measurement with a minimum effort. The addition of a USP23 pure water monitoring feature also makes the SC202 suitable for the pharmaceutical industry. Yokogawa has implemented three leading process Fieldbus technologies in their 202 series: HART, Foundation Fieldbus H1 and Profibus PA. All transmitters are provided with the important and widely used Device Description files that provide information on parameters and other data in each device, as well as the ability to include algorithmic relationships such as calibrations. - Universal conductivity/resistivity, software switchable - On-line sensor checking - Event logbook in software - Matrix temperature compensation for pure water applications - Password protection for all levels of software - Intrinsically safe version and non-incendive versions - Pharmaceutical pure water monitoring (USP23) - Autoranging from 0.01 µSxC.C to 200mSxC.C. - HART, Foundation Fieldbus, or Profibus Communications options Specifications PDF Manual Download