What is the primary use of an InPro 3253/120/PT1000 pH electrode?

This electrode is designed for continuous, in-line industrial pH measurement in process environments, not for simple laboratory spot checks. It provides real-time data for process control.

Why is a PT1000 sensor integrated into the electrode?

The integrated PT1000 temperature sensor provides automatic temperature compensation, which is crucial for accurate pH readings as pH values are temperature-dependent.

Can this electrode be used in hazardous environments?

Many industrial pH electrodes of this class are designed to meet certifications like ATEX or IECEx, making them suitable for use in hazardous zones. Buyers should verify specific unit certifications.

What does the '120' in the model number signify?

The '120' typically refers to the sensor shaft length in millimetres, indicating a relatively short insertion depth suitable for specific installation requirements.

Is this electrode suitable for hygienic applications like food or pharma?

Yes, units with features like sterilizability/autoclavability and robust construction are commonly used in hygienic applications where regular cleaning and sterilisation are required.

What maintenance does this type of electrode typically require?

Maintenance commonly involves regular calibration, cleaning of the sensing membrane, and periodic replacement of the electrode, as pH electrodes have a finite lifespan.

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 1

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 2

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 3

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 4

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 5

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers, photo 6

Used Inpro 3253/120/PT1000 PH Electrodes - TOC & Conductivity Analyzers

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Mettler Toledo - Inpro 3253/120/PT1000 PH Electrodes

Name: Inpro 3253/120/PT1000 PH Electrodes
Brand: Mettler Toledo
SKU: 3146A SR.BLS02
Price: 175 GBP
Availability: InStock

Price: £ 175

This item is unused and in the original packaging

We have a quantity available

The InPro 3253SG 120/PT1000 is an in-line industrial pH electrode (probe) intended for continuous process measurement rather than simple lab spot checks. It integrates both the pH sensing element and temperature compensation in a single unit, allowing accurate, real-time pH measurement in process lines, tanks, fermenters and reactors

Physical & Mechanical

Sensor shaft length: ~120 mm — relatively short, good for installations with limited insertion depth.
Process connection: Pg 13.5 threaded connection.
Connector type: VP industrial connector for secure integration.
Pressure rating: Up to ~4 bar gauge.

Temperature & Compensation

Built-in PT1000 temperature sensor — provides temperature compensation for accurate pH reading.
Operating range: ~0 °C to ~100 °C.

Sensing & Reference System

Glass pH sensing membrane with a pre-pressurized liquid electrolyte system — lowers maintenance and improves stability.
Ceramic diaphragm — stable reference junction.
Argenthal silver-ion trap cartridge — improves reference performance, especially in environments containing sulfides.
Sterilisation & Hygiene
Sterilisable/autoclavable — built to withstand repeated steam sterilization or autoclave cycles without losing calibration or performance.

Certifications & Approvals

Typically supplied with industrial and safety certifications (e.g., ATEX, IECEx and CE) for use in hazardous zones and hygienic processing.

pH Range

Suitable for pH measurement typically within 0 to 12 (depending on membrane type).

Summary

In essence, the Mettler Toledo InPro 3253/120/PT1000 is a high-performance industrial pH electrode designed for robust, low-maintenance in-line monitoring with integrated temperature compensation, suitable for sterilizable and process‐critical environments. Its pre-pressurized reference and rugged build help deliver stable pH measurements in demanding applications.

Cambridgeshire, United Kingdom

5,791 km away

Model Number

InPro 3253/120/PT1000

Stock Number

3146A SR.BLS02

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Applications & Use Cases

Continuous pH monitoring in chemical processing lines.
Real-time pH control in fermentation and bioreactor systems.
Quality control and process optimisation in food and beverage production.
Effluent monitoring in wastewater treatment plants.
pH measurement in pharmaceutical manufacturing processes.

Typical Specifications

Sensor Type: Typically a combined pH electrode with integrated PT1000 temperature compensation.
Process Connection: Commonly Pg 13.5 threaded connection for in-line installation.
Shaft Length: For this model, typically around 120 mm, suitable for limited insertion depths.
Operating Temperature Range: Units of this type commonly operate from 0 °C to 100 °C.
Pressure Rating: Typically rated for pressures up to 4 bar gauge.
Sterilisation: Often designed to be sterilizable/autoclavable for hygienic applications.
Connector Type: Commonly features a VP industrial connector for robust electrical connection.
Certifications: Units for industrial use are typically supplied with relevant industrial and safety certifications (e.g., CE, ATEX).

Frequently Asked Questions

This electrode is designed for continuous, in-line industrial pH measurement in process environments, not for simple laboratory spot checks. It provides real-time data for process control.

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.