Category
Hydrogen Peroxide (H2O2) Analysers
Online hydrogen peroxide (H2O2) monitoring for disinfection and aseptic processes.
A hydrogen peroxide analyzer keeps H2O2 disinfection on target: too little doesn't sterilise, too much wastes chemical and can damage product or equipment. The Chemitec S494 N sensor, from the same amperometric family as the chlorine and ozone sensors, works 0 to 3 bar and 0 to 45 °C, with a Series 46 transmitter for dosing control.
2 Products · Hydrogen Peroxide Analyser
Selection guide
Hydrogen Peroxide (H2O2) Analysers Guide
How a hydrogen peroxide analyzer works
The S494 N sensor uses the same membrane amperometric principle as Chemitec's other oxidant sensors: H2O2 diffuses through a microporous membrane and reacts at an internal electrode, producing a current proportional to concentration, with built-in temperature compensation. Because the sensing method is shared across the S494 N family, a plant already running chlorine or ozone sensors can add hydrogen peroxide monitoring on the same Series 46 transmitter platform without learning a different technology.
How to choose a hydrogen peroxide analyzer
- Range: the S494 N family covers 0 to 2 ppm up to 0 to 2000 ppm; tell us your target concentration and we'll select the sensor version.
- Body material: PVC, PEEK or AISI 316 construction, chosen for chemical compatibility with your process and any CIP chemicals it also sees.
- Pressure and temperature: rated 0 to 3 bar and 0 to 45 °C as standard.
- Dual measurement: the Series 46 transmitter can add a second parameter, such as pH, on the same display if your process needs both.
- Application: aseptic filling and packaging need tight, stable control; cooling tower and wastewater disinfection tolerate more variation, which can simplify sensor placement.
For other oxidant disinfectants, see Peracetic Acid Analyzer and Ozone Analyzer.
FAQ
Common questions
What is a hydrogen peroxide analyzer used for?
It gives a continuous H2O2 concentration reading so a plant can hold disinfection or sterilisation dosing on target. Too little H2O2 fails to disinfect; too much wastes chemical and can affect product taste or damage equipment, so online monitoring keeps the dose in a narrow working band.
How does the S494 N sensor measure hydrogen peroxide?
It's a membrane amperometric probe: H2O2 diffuses through a microporous membrane and reacts at an internal electrode, generating a current proportional to concentration, with a built-in temperature sensor for automatic compensation, the same principle used across Chemitec's oxidant sensor family.
Which range do I need for H2O2 monitoring?
The S494 N family offers ranges from 0 to 2 ppm up to 0 to 2000 ppm. Aseptic packaging typically runs a specific target concentration set by the sterilisation process; tell us your expected concentration and we'll select the right sensor version.
Is the reading temperature-compensated?
Yes. The sensor has a built-in temperature sensor that automatically compensates the reading, which matters because the electrode reaction rate, and therefore the raw signal, changes with temperature as the process warms or cools.
Can the transmitter control the dosing pump automatically?
Yes. The Series 46 transmitter shows the reading, raises alarms and drives the dosing pump directly, so H2O2 addition tracks the measured concentration instead of relying on a fixed manual dose.
Where is hydrogen peroxide monitoring typically used?
Common applications are aseptic filling and packaging lines, cooling tower and process water disinfection, and advanced oxidation steps in wastewater treatment, wherever H2O2 is dosed for disinfection or sterilisation and needs to stay within a working concentration band.
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