Forbes Marshall is an ISO 9001 certified company that produces Conductivity Analysers or Conductivity Transmitter. The Conductivity Analysers or Conductivity Transmitter comes in seven ranges. In a single controller allow the controller to be used in a wide variety of applications. The maximum measurement range is 1000 mS/cm. Accuracy of ± [plus-or-minus] 1% is achievable for most ranges, while ± [plus-or-minus] 2% for measurements above 500 mS/cm. The 2-cell electrode system with regard to Conductivity Analysers can be used with a selection of 0.01, 0.1, 1.0 or 10.0 cell constants. The cell constant corresponding to the cell connected to the controller can be input independently during calibration. Status of the cell is updated and displayed after every calibration and can be viewed at anytime. Temperature Coefficients can be set for more precise temperature compensation.