A Gas detector is a device that detects the presence of any gas within an area, usually as part of a safety system. This type of single gas detector equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. A single gas detector can also sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave the area. A single gas detector device is important owing to the fact that there are many gases that can be harmful to organic life, such as humans or animals.