Proceas® the new generation of gas analyzers for Chlorine production

Accurate and low detection limit
Fast response time & direct mesurement
Low maintenance & no drift
For wet & dry chlorine

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Application note Gas analyzer in chlorine

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Nos applications

Why do you need to control traces in Chlorine production?

At the different steps of the chlorine alkali process, some gas components can be found at trace level.Their concentrations can fluctuate over time and are depending on process parameters.

Species like O2, CO2, H2O are tracked in the chlorine gas matrix to insure the efficiency of the production process, and H2 is measured to avoid the explosion of the installation.


Optical Feedback Cavity Enhanced Absorption Spectroscopy

The ProCeas® is an enhanced TDL analyzer. It uses the patented OFCEAS technique, based on extractive absorption spectroscopy.
This laser based technology is able to measure directly gases down to ppb levels of concentration, with an unforeseen quality of measurement in terms of accuracy and repeatability.
OFCEAS is also the only laser technique to measure directly hydrogen down to 3ppm, giving a real time measurement of H2 at startup with up to 10 measures per second.

Unique sampling system

ProCeas® is combined with a specific sampling system using only components compatible with the aggressive chlorine gas. Using no stainless-steel tubes and no pump. But composed of tubbing and connections in PVDF and PFA. Our long-term experience in the industry allowed us to optimize our sampling to measure in dry and wet chlorine.


ProCeas® has an integrated self-calibration of the measurement system, featuring no zero and span drift over time. ProCeas® is able to analyze a large range of gases with limited maintenance costs.

Key features

Accurate and low detection limit (3ppm for H2)
Sampling system adapted to dry and wet chlorine
No Zero drift and no Span drift
No regular calibration required
Multigas analyser possibilities (H2, O2, H2O, CO2)
Fast response time (T10-90 starting from 3 seconds)
Direct measurements of H2
ATEX enclosures available


Analytical specifications

Proceas® gas analyzer in Chlorine

Is a complete pre-calibrated single or multicomponent (H2, O2, H2O, CO2, etc.) laser infrared spectrometer for measurement of process gases.

Impurities Rangea LODb
 H2 0-5% 3 ppm
O2 0-5% 1 ppm
CO2 0-5% 1 ppm
H2O 0-1000 ppm 10 ppb

a adjustable range on request
b limit of detection 3 sigma 60 seconds

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Application note Gas analyzer in chlorine

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Nos applications