InPro® 4850i – Dual-Membrane pH Electrode for the Toughest Chlor-Alkali Processes Mettler Toledo, Process Analytics AG
Unlike almost all other pH electrodes, the InPro 4850i does not have a diaphragm, therefore poisoning of the electrode's sodium reference system is impossible. This design ensures stable measurement and eliminates sensor drift. The electrode's high quality pH-sensitive glass membrane is extremely resistant to chlor-alkali process conditions, ensuring precise pH measurement.
The output signal from dual-membrane pH electrodes suffers from electrical interference. The sodium-sensitive glass has a very high impedance, and that combined with the impedance of the cable between sensor and transmitter means that the signal from the sensor is highly sensitive to interference from surrounding equipment. Even touching or simply approaching the measurement system can create a change in the output.
METTLER TOLEDO's Intelligent Sensor Management (ISM) technology has solved this problem. Sensors with ISM convert the analog measurement signal into a low-impedance digital signal which is immune to electrical interference, ensuring 100% signal integrity and stability. ISM technology also offers sensor self-diagnostics, pre-calibration of sensors, and Plug and Measure start up to simplify installation and maintenance tasks.
The combination of dual-membrane, sealed reference system and digitized signal makes the InPro 4850i unique and the ideal solution to pH measurement in the chlor-alkali industry.
METTLER TOLEDO offers a wide portfolio of pH, ORP, DO, O2, CO2, conductivity, and turbidity sensors together with a full range of transmitters, cleaning and calibration systems.
More information on the InPro 4850i is available at www.mt.com/inpro4850i
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10 January 2012
