We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.
The InPro 4850i is a dual-membrane pH and ORP sensor specifically designed for chlor-alkali processes. This pH sensor has no diaphragm, making it immune to chlorine and other oxidizing agents that can lead to failure in other pH and ORP electrodes. The InPro 4850i is a digital, Intelligent Sensor Management (ISM) pH sensor that is immune to interference and distortion and ensures 100% signal integrity and stability, with advanced diagnostics to help manage maintenance.
The probe has a sodium-sensitive membrane and uses the chlor-alkali process brine as reference. The reference system has no junction, which allows the probe to resist oxidation and extends the sensor's life.
InPro 4850i pH sensor has no diaphragm, making it immune to chlorine and other oxidizing agents that can lead to failure in other pH and ORP electrodes.
The InPro 4850i features Intelligent Sensor Management (ISM) technology and a digital signal that is immune to interference and distortion, ensuring 100% signal integrity and stability.
ISM predictive diagnostics allow the shift from time-based maintenance to predictive maintenance. The sensor diagnostics tell operators when calibration and replacement should be performed.
This combined pH and ORP InPro 4850i sensor uses a platinum solution ground and shielding system that stabilizes the signal and enables redox measurement.
The InPro 4850i chlor-alkali pH and ORP sensor is Ex certified, so it can be used for demanding processes in the hazardous-classified zones of your production facility.
The InPro 4850i combination pH electrode incorporates a sodium-sensitive glass membrane that uses the sodium concentration of the chlor-alkali process brine as a reference. The sensor’s reference system has no diaphragm and is therefore immune to chlorine and other oxidizing agents, ensuring long sensor lifetime. Read more
Accurate pH measurement is critical in chlor-alkali processes, but the conditions are very tough on conventional pH sensors. Using a sensor designed specifically for chlor-alkali applications, Evonik Industries has cut sensor maintenance by 80%. Read more
This case study describes how at a US chlor-alkali site, pH and ORP measurements in harsh conditions were extremely problematic. METTLER TOLEDO was given the opportunity to show that we could make these measurement points more reliable, less expensive and safer to operate with InPro 4850i sensors. Read more
A combination of elevated temperatures, the presence of oxidants, and highly sensitive sensor output signal makes reliable pH measurement in the chlor-alkali process very challenging. This application note reviews these problems in relation to membrane cell chlorine production and explains how the InPro 4850i pH sensor solves all the measurement issues. Read more
This white paper explains: Membrane cell chlorine production, problems with conventional pH electrodes, pNa/pH technology, measurement challenges, plug and Measure – fast and simple start up. Read more
We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.
Fast intervention and full security with our remote support capabilities.
The InPro 4850i is a dual-membrane pH and ORP sensor for measuring processes with a stable sodium concentration. This probe combines accurate measurement with durability for tough environments.
The InPro 4850i pH sensor is available in 120 mm and 225 mm lengths.
A special pH sensor is needed for chlor-alkali processes because these processes are very though on pH electrodes: chlorine poisons sensor reference systems, crystalized brine and precipitated impurities clog diaphragms, and the environment corrodes contacts. Additionally, the high-impedance output signal of sensors designed for the process is highly susceptible to interference. In short, sensors perform poorly and fail quickly.
The InPro 4850i dual-membrane pH electrode answers all these problems. Its reliability, longevity and low maintenance ensure exceptional measuring performance, no matter how tough it gets.
The key features of the InPro 4850i pH sensor that make it suitable for chlor-alkali processes are:
The InPro 4850i family of pH sensors integrate with any appropriate METTLER TOLEDO transmitter. These include the M300, M400 and M800 transmitters. The transmitter you choose depends on your environment and complete measurement requirements. The exact transmitter for your application should be selected in consultation with your local METTLER TOLEDO representative.