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Early warning fire detection for conveyors

13 August 2023

The flammable nature of high temperature food products being transported along a processing line means they have the potential to ignite.

Production of products such as popcorn, crisps, pies or cornflakes, where the cooking process necessitates high temperatures, all pose an enhanced fire risk. With an undetected flaming product passing along the conveyor, this can soon cause issues further down the processing line, potentially leading to a major incident. 

Patol’s 5000 series includes the high temperature transit flame sensor which triggers an alarm on a conveyor if the temperature reaches more than 240°C  although sensitivities can be set higher than this threshold depending on the nature of the application. The sensors are located above the conveyor and monitor the food product as it leaves a fryer, oven, dryer or any other equipment employed in the cooking process. Conveyor speeds of 0.5 to 6m/sec can be accommodated, with the sensor triggering if a material reaches an ember or flame condition. Enhanced false alarm immunity is ensured through the sensor being ‘solar blind’ meaning the ‘background’ and ‘transient’ infra-red spectra are discriminated.

The glass-free, stainless-steel sensors are designed specifically to meet the requirements of food processing environments.


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