pH Electrode Handles Chlor-Alkali Applications
Mettler Toledo Process Analytics has launched a pH electrode designed for the chlor-alkali industry. The company’s InPro 4850i incorporates a sodium-sensitive glass membrane that uses the brine present in chlorine production as a reference. This reference system is hermetically sealed, providing a barrier against oxidizing agents that poison other sensors. This feature, combined with digital transmission of the measurement signal, means the InPro 4850i is suited for chlorine production.
The InPro 4850i does not have a diaphragm, eliminating the possibility of poisoning the electrode's sodium reference system, according to Mettler Toledo. This design ensures stable measurement and eliminates sensor drift. The electrode's pH-sensitive glass membrane is resistant to chlor-alkali process conditions.
Mettler Toledo’s Intelligent Sensor Management (ISM) technology converts the analog measurement signal into a low-impedance digital signal that is immune to electrical interference. ISM technology also offers sensor self-diagnostics, pre-calibration of sensors and plug and measure start up to simplify installation and maintenance tasks.