Endress+Hauser's TopCal S system for hygienic applications enables pH electrodes to be automatically cleaned and buffered without shutting the process - a true "hot-tap? measurement. TopCal S enables more accurate and reliable pH monitoring of processes, extends electrode life and reduces time-consuming servicing by maintenance staff - a major running expense in many plants.
The system is fully automated to user-defined specifications. It is based around a fully automated, pH electrode retraction assembly, made of stainless steel and designed to meet all FDA, 3A and EHEDG (European Hygienic Engineering & Design Group) hygiene requirements for measuring instruments.
The assembly is mounted to the side of the vessel, where it supports the electrode in the process and pneumatically retracts it into a sealed cleaning chamber when scheduled. Within the chamber the electrode is hygienically washed and buffered before being returned to the process. The slope of the electrode is automatically checked each time it is buffered, and a maintenance warning message is sent to the operators when it nears the end of its life.
Where continuous pH readings are not needed, the electrode is held in a neutral state within the chamber for a user-defined period - significantly extending its longevity. Where Endress+Hauser's IsFET (glass-free) solid-state electrodes are used, the chamber provides protection from caustic solutions during cleaning cycles.
The TopCal S system also comprises a fully programmable control unit containing cleaning and buffering fluids, and a transmitter with 4?20 mA, HART and Profibus interfaces. Endress+Hauser's user-friendly Readwin software provides fixed and user-definable programs; on-site or remote operation; automatic triggering of cleaning cycles; maintenance request indicators; and audit trails for quality assurance.
Simple, modular design minimises installation costs and maintenance requirements, making TopCal S a cost-effective choice for any plant where pH measurements are critical. TopCal S is already installed in several Australian food processing sites, and process engineers are delighted with the accuracies and cost savings achieved.
Phone 1300 363 707
Fax 02 8877 7099
email John Immelman
Displayed: September 2003 |
