Name: pH Sensor InPro4260i/SG/225
Brand: Mettler Toledo

Withstands Demanding Applications

The InPro 4260i uses a polymer reference system for precise pH measurement and long lifetime, even under difficult industrial conditions.

Advanced Predictive Diagnostics

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

Accurate pH & ORP Measurement

The InPro 4260i provides a wide measurement range from 0-14 pH and has a solution ground for redox measurement and enhanced stability.

Eliminates Clogging & Resists Poisons

The InPro 4260i features an open junction Argenthal reference system with a Xerolyt® Extra polymer electrolyte that eliminates sensor clogging and ensures the sensor is resistant to poisoning, solvents, and strongly acidic or basic conditions.

Optimizes Maintenance Cycles

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 indicates when the sensor will need to be cleaned.

Suitable for Hazardous Conditions

The InPro 4260i is ATEX and FM certified for hazardous areas. It can withstand temperatures up to 266°F (130°C) and can handle operating pressures as high as 15 barg, depending on the temperature.

Fast Replacement of Sensors

Ensure the safety of the maintenance team with the ability to Plug & Measure. The InPro 4260i can be calibrated away from the process and then quickly swapped into the process environment without the need to recalibrate.

Specifications - pH Sensor InPro4260i/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	Xerolyt Extra polymer electrolyte, open double junction, Argenthal cartridge with silver-ion trap
Operating Temperature (Fahrenheit)	32 °F - 266 °F
Operating Temperature (Celsius)	0 °C - 130 °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 15 barg @ 25°C 0 to 7 barg @ 130°C
Model Family	InPro4260(i)
Temperature Sensor	Digital
Measurement Parameter	ORP/Redox pH
Shaft Material	Glass
Operating Pressure (PSI)	0 to 101 psig @ 266°F 0 to 217 psig @ 77°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 explains how the use of continuous monitoring of in-line oxidation reduction potential (ORP) enables operations to determine the crit...

Application Notes

How to Ensure Titanium Dioxide Quality

This application note explains how to ensure titanium dioxide quality using in-line pH measurement in real time. Manufacturers of titanium dioxide (Ti...

Case Studies

Controlling pH of Pulp Mill Wastewater

This case study explains how a large paper-based consumer goods company reduced maintenance of pH sensors at their pulp mills. When dealing with chall...

Sensor Calibration & Maintenance Tools

Cable DS AK9-RJ12 with Dongle

Material No.: 52300383

( incl. VAT)

Computer Accessory iLink Multi

Material No.: 30130631

( incl. VAT)

Sensor Simulation & Validation

ISM Simulator pH Kit

Simulating ISM sensors

Material No.: 52300410

( incl. VAT)

Buffers for In-Line pH Sensors

Technical Buffer pH 2.00 6x250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This package contains six bottles of 250mL of pH 2.00 buffer solution.

Material No.: 51319010

( incl. VAT)

Technical Buffer pH 2.00 1000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 1000 mL of pH 2.00 buffer solution.

Material No.: 51319011

( incl. VAT)

Technical Buffer pH 4.01 6x250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This package contains six bottles of 250mL of pH 4.01 buffer solution.

Material No.: 51340058

( incl. VAT)

Technical Buffer pH 4.01 1000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 1000 mL of pH 4.01 buffer solution.

Material No.: 51340228

( incl. VAT)

Technical Buffer pH 7.00 6x250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This package contains six bottles of 250mL of pH 7.00 buffer solution.

Material No.: 51340060

( incl. VAT)

Technical Buffer pH 7.00 1000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 1000 mL of pH 7.00 buffer solution.

Material No.: 51340229

( incl. VAT)

Technical Buffer pH 9.21 6x250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This package contains six bottles of 250mL of pH 9.21 buffer solution.

Material No.: 51300194

( incl. VAT)

Technical Buffer pH 9.21 1000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 1000 mL of pH 9.21 buffer solution.

Material No.: 51340230

( incl. VAT)

Technical Buffer pH 10.00 6x250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This package contains six bottles of 250mL of pH 10.00 buffer solution.

Material No.: 51340231

( incl. VAT)

Technical Buffer pH 10.00 1000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 1000 mL of pH 10.00 buffer solution.

Material No.: 51340232

( incl. VAT)

Buffer pH 4.01 ACS red 5000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single container holds 5000 mL of pH 4.01 buffer solution.

Material No.: 51319012

( incl. VAT)

Buffer pH 7.00 ACS green 5000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single container holds 5000 mL of pH 7.00 buffer solution.

Material No.: 51319016

( incl. VAT)

Buffer pH 9.21 ACS blue 5000ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single container holds 5000 mL of pH 9.21 buffer solution.

Material No.: 51319017

( incl. VAT)

Technical Buffer pH 2.00 250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 250 mL of pH 2.00 buffer solution.

Material No.: 51340055

( incl. VAT)

Technical Buffer pH 4.01 250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 250 mL of pH 4.01 buffer solution.

Material No.: 51340057

( incl. VAT)

Technical Buffer pH 7.00 250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 250 mL of pH 7.00 buffer solution.

Material No.: 51340059

( incl. VAT)

Technical Buffer pH 9.21 250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 250 mL of pH 9.21 buffer solution.

Material No.: 51300193

( incl. VAT)

Technical Buffer pH 10.00 250ml

Certified and traceable pH buffer solution for sensor calibration and verification in life science and industrial applications. This single bottle contains 250 mL of pH 10.00 buffer solution.

Material No.: 51340056

( incl. VAT)

Search suggestions