September 2005Analytical Instrumentation & Environmental Monitoring
Mettler Toledo Ingold's new, combined pH/temperature electrode is designed to meet the demanding applications in the chemical and allied industries. The InPro 4800 top-of-the-line gel-type electrode has a wide field of application, and offers reliable performance and prolonged lifetime in hostile environments, for instance in chlor-alkali or pulp and paper processes, in sugar processing or in gas scrubbers.
The strong resistance towards oxidising media, solvents and acid or alkali solutions, together with a high resistance to elevated operational pressures and temperatures, makes this electrode suitable for particularly demanding chemical processes. For process media with high particle or fibre content, the optional flat glass membrane electrode with integrated solution ground is the optimal choice.
The InPro 4800 family of pH electrodes with substantially prolonged operational life in the presence of aggressive chemicals or at high operational pressures significantly reduces sensor maintenance and replacement costs in industry. This is due to the extremely long diffusion path in two separated electrolyte chambers, the dirt-repellent annular PTFE (Teflon) junction in contact with the measuring media and pressure-compensated reference system to enable operation at particularly high pressures, 1,3 MPa and 130°C. The electrode has been developed and manufactured according to the latest standards, eg, PED (pressure equipment directive 97/23/EC, Art.3, Sec.3).
Appropriate dedicated housings and transmitters for tough conditions in most chemical processes are available. The VarioPin plug connector (VP) makes installation and handling of these electrodes simple. The VP connector offers greater operational reliability as it is watertight (IP68) and provides a more interference-free measurement signal.
Mettler Toledo offers a complete program of pH, Redox (ORP), DO, contact and electrodeless conductivity transmitters to allow standardisation on the same platform and user philosophy.
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