Gas Detection Controller

Gas detection controllers are connected to one or multiple detectors to ensure continuous and permanent monitoring of areas presenting gas leaks that could relate to risks. The gas detector then sends an electrical signal to the controller related to the concentration of the gases being detected. At this point, the controller will generate actions triggering signals, and alarms that may be visual and/or audible.

Gas detection controllers are used for various applications where toxic or combustible gases are part of an industrial process or a by-product of it, which pose a threat to people, property, and productivity. Applications include petrochemicals, specialty chemicals, water, and wastewater treatment, and other industrial applications.

The first step in preventing an accident is to monitor for the presence of dangerous gases. A system that can detect the presence of dangerous gases in an industrial setting is crucial to preventing workplace injuries and accidents. Using an automatic gas detection controller can trigger several protective measures, including ventilation, water mist, fire suppression, and more. These controllers can be used in both process control and safety applications. But they do much more than just monitor for dangerous gases.

Some gas detection controllers use semiconductor sensors. These sensors detect gases through chemical reactions. Tin dioxide, for example, has a resistance of 0 kO in air. This falls to 3.5 kO when 1% methane is present. The change in resistance is used to calculate the concentration of gas. These sensors are often used to detect oxygen, hydrogen, and alcohol vapor. They also allow operators to see the status of the system from a distance.

When a gas detection controller is installed permanently, it is important the detectors are installed in the field properly and are also connected to the controller properly, along with any visual or audible accessories. In addition, all parameters should be set up in both the detector and controller to meet the needs of the application. When commissioning the fixed gas detection system both detectors, controllers and any visual and audible items should be tested for their intended functionality.