CO Detection System for Explosion and Fire Prevention

Application Examples

Spray dryers
Flour mills (new application)

Available Options

Two sampling points as standard (1 input and 1 output), with capacity for up to two extras.
Expansion unit available for more sample routes.

The Atex CO detection system uses advanced carbon monoxide (CO) sensors to detect early stages of powder combustion before a fire or explosion can be ignited. This allows the problem to be resolved either manually or automatically, reducing fire and explosion protection costs.

Features

Can detect an incipient fire in under 10 seconds.
Reduces the potential for explosions.
Reduces consequential loss from fire.
Very low maintenance costs.
On-site inspection by plant personnel.
Quick installation and commissioning.

Concept and Operation

Sensors are placed at all air inlets and outlets, continually sending air samples to the CO detection control cabinet where they are treated and filtered. The differential between the sum of inlet samples is compared with the sum of outlet samples. When the CO differential reaches one of three programmable levels, the appropriate alarm is signaled:

Inform the operator (recommending system inspection) (e.g. 0.5ppm)
Automatically shut down the process (e.g. 1.5ppm)
And/or activate a rapid suppression system to extinguish the potential fire. (e.g. 3ppm)

By this means, a potential explosion or fire risk is averted in the very early stages. Continuous calibration is done by checking the process reference gas against a sample gas to improve accuracy. Differential CO removes the influence of external CO variations!

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