The transmitter accepts inputs from up to two process photometers and four analytical sensors simultaneously. Sensor types include pH, ORP, conductivity, dissolved oxygen, nitrate, turbidity, free chlorine and ion selective sensors. Mathematical functions allow the unit to calculate measured values on the basis of multiple input values. Suggested applications are in chromatography, fermentation, filtration and phase separation. The transmitter also performs diagnostics on all connected sensors and analyzers, and transmits error messages. Some diagnostic functions include: monitoring impedance of pH glass; measuring signals for stagnation; monitoring the condition of electrodes and the degree of electrode aging; checking for overcurrent conditions; and comparing measured values of conductivity and temperature against tables defined in USP and EP specifications for pharmaceutical water. Mathematical functions can be used to calculate up to six “virtual” process values such as a pH calculation based on two conductivity values; the difference between two measured values; rH value based on inputs from a pH and ORP sensor; calculation of the remaining capacity of a cation exchanger; and others. The unit allows plant personnel to obtain all of the quality and process information needed from a single transmitter, leading to reduced installation time, lower equipment costs, no need to acquire and manipulate data from multiple instruments, and simplified maintenance.
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Endress+Hauser, Inc.
www.us.endress.com
888.363.7377
