0054C Emerson Conductivity Microprocessor Analyzer

The Emerson / Rosemount Analytical 54C Series Conductivity Microprocessor Analyzers, with the appropriate sensor, monitors and controls conductivity in a variety of industrial processes.

The analyzer can use either contacting or inductive (Toroidal) conductivity sensors. The sensor type is selected by keyboard entry. This feature allows the user to stock one instrument for most conductivity applications.

The analyzer is housed in a rugged NEMA 4X (IP65) weatherproof, corrosion resistant enclosure of epoxy-painted cast aluminum. It is suitable for panel, pipe or wall mounting. All functions are accessible through the front panel membrane keyboard which features tactile feedback. The large dot-matrix liquid crystal display continuously indicates conductivity, temperature, current output and alarm setpoints. Three levels of security are available: 1) calibration, 2) output range and alarm setpoint adjustment, and 3) advanced configuration. A hinged front panel provides convenient wiring access.

The two independent, isolated outputs provide 4-20 or 0-20 mA signals for conductivity and temperature. Both output ranges are programmable within the measurement ranges of conductivity and temperature. A hold output mode allows manual control during routine sensor maintenance. During hold mode the current outputs will be held at a preset or last process value.

In the event of a fault, the analyzer will display a descriptive diagnostic message, illuminate a red LED on the front panel and drive the outputs to pre-selectable fault mode values. A dedicated fault relay may be used to provide a visual or audible alarm to an operator.

Three process alarms are a standard feature. All alarms have programmable high or low activation, independent setpoints, adjustable hysteresis (dead-band) and time delay. One relay may be configured as a timer for automatic chemical cleaning of the sensor. Green LED's on the front panel indicate the status of each of the three alarm relays.

Standardization is easily accomplished by simply immersing the sensor in a known solution and entering the value. With a two point calibration, the analyzer will automatically calculate the temperature slope of the solution.

The 54C utilizes either a PT-100 or a PT-1000 RTD located in the sensor to display temperature and compensate the conductivity reading for changes in process temperature. Manual temperature compensation is also keyboard selectable.