pH Sensor InPro4850i/SG/225

Name: pH Sensor InPro4850i/SG/225
Brand: Mettler Toledo

The InPro 4850i/225 is a dual-membrane pH and ORP sensor for measuring processes with a stable sodium concentration. This 225 mm probe combines accurate measurement with durability for tough environments.

Material No.: 30536627

For use in chlor-alkali production

The InPro 4850i is specifically designed for chlor-alkali processes. It uses the sodium concentration in the process (brine) as a reference.

Designed to withstand harsh conditions

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.

An advanced digital pH sensor with ISM

The InPro 4850i has an ISM digital signal that is immune to interference and distortion and ensures 100% signal integrity and stability.

Long life in chlor-alkali applications

The InPro 4850i features a sodium-sensitive glass membrane that uses the chlor-alkali process brine as a reference. The reference system has no junction, which allows the pH sensor to resist oxidation and extends the sensor's life.

Versatile pH and ORP sensor

This combined pH and ORP sensor uses a platinum solution ground and shielding system that stabilizes the signal and enables redox measurement. Additionally, the digital signal provides 100% signal integrity for stable and accurate measurement.

Diagnostics to reduce maintenance

The ISM predictive diagnostics on the InPro 4850i allow the shift from time-based maintenance to predictive maintenance. The sensor provides a clear indication of when it will need to be calibrated and replaced to reduce unplanned downtime.

Compliance with safety regulations

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.

Specifications - pH Sensor InPro4850i/SG/225

ISM (Digital) or Analog	ISM (Digital)
pH Sensing Technology	Highly Alkali Resistant Glass Membrane for Tough Conditions (HA)
pH Range	0 – 14
Reference System	Hermetically sealed, sodium sensitive glass membrane
Operating Temperature (Fahrenheit)	14 °F - 248 °F
Operating Temperature (Celsius)	-10 °C - 120 °C
Cable Connector	K8S
Process Connection	Pg 13.5 Thread
Sterilizable/Autoclavable	No
Sensor Length	225 mm
Certificates & Approvals	ATEX/IECEx: Ex ia IIC T6/T5/T4/T3 Ga/Gb CE FM: IS Cl. I, II, III, Div 1, GR ABCDEFG/T6 METTLER TOLEDO Quality Certificate PED
Operating Pressure (Bar)	0 to 12 barg @ 120 °C
Model Family	InPro4850(i)
Temperature Sensor	Digital
Measurement Parameter	ORP/Redox pH
Shaft Material	Glass
Operating Pressure (PSI)	0 to 174 psig @ 248 °F
Solution Ground/Redox Metal	Platinum
Refillable Electrolyte	No
Hazardous Area Approvals	Yes
Primary Media/Application	Chemical Processes
Hygienic/Biocompatibility Approvals	No

This white paper considers the problems of pH measurement in the chlor-alkali membrane cell process and looks at the InPro 4850i, a chlor-alkali pH el...

Application Notes

pH Measurements in Chlor-Alkali Production

A combination of elevated temperatures, the presence of oxidants, and highly sensitive sensor output signal makes reliable pH measurement in the chlor...

Case Studies

Chlor-Alkali Process pH Measurement

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