High Performance, High Accuracy pH & ORP

The InPro 3250i SG/225 is a pre-pressurized, liquid filled, low maintenance pH & ORP sensor, combined with a temperature sensor, for in-line measurement in demanding applications. The 225 mm version is optimal for medium installation lengths.

Highly Accurate in Extreme Conditions
The InPro 3250i SG/225 provides stable and precise readings under extreme process conditions from pH 0-14 thanks to its high-alkali pH glass membrane.

Low Maintenance and Easy-to-Use
This pH sensor has Intelligent Sensor Management (ISM) technology, offering predictive diagnostics to reduce maintenance and simplify calibration.

Sterilizable and Autoclavable
This sensor provides fast and precise pH and ORP measurement, even after repeated autoclaving and sterilization cycles.

Analog or ISM ISM
Measurement parameter pH and ORP
pH membrane glass type High Alkali glass (HA)
Type of junction Ceramic
Sensor Length 225 mm
Sterilizable Yes
Autoclavable Yes
Electrolyte Pre-pressurized liquid
pH range 0-14 pH
Pressure resistance (bar) 0 to 4 barg
Pressure resistance (psi) 0 to 58 psig
Reference system Argenthal with Silver-Ion Trap
Measuring Temperature Range (imp) 32 to 212° F
Measuring Temperature Range (metric) 0 to 100° C
Temperature Signal Digital
Connection Type K8S
Solution ground / Redox metal Platinum
ATEX Certification SEV 14 ATEX 0168 X <br>Ex ia IIC T6/T5/T4/T3 Ga/Gb
FM approval IS/ I, II, III /1/ABCDEFG /T6
IECEx Certificate of Conformity IECEx SEV 14.0025X <br>Ex ia IIC T6/T5/T4/T3 Ga/Gb
Model Family InPro 3250
Material Number(s) 52005374

Features and Benefits

Reliable, Accurate and Robust
The InPro 3250i SG/225 is designed to withstand the rigors of your production. Its pre-pressurized, maintenance-free reference system ensures high reproducibility and reliable measurement performance under diverse operating conditions.
Advanced Sensor Diagnostics with ISM
This pH sensor features intelligent diagnostics to help manage your maintenance. The sensor provides a clear display of its remaining lifetime, time remaining until calibration is needed, and counts of the SIP and CIP cycles it has undergone.
Easy Validation
The InPro 3250i SG/225 is suited for chemical and pharmaceutical production. Its certification covers hazardous zone use, biocompatibility of the electrolyte, and all relevant hygiene and safety regulations.
Versatile to Meet Your Application Needs
This sensor can measure both pH and ORP (Redox), and has a built in digital temperature sensor. It is pressure resistant up to 4 barg (58 psig), has a watertight connector and can withstand repeated sterilization and autoclave cycles.