A Gas Detector is a safety device used to detect the presence of hazardous gases in the environment and ensure workplace safety. It monitors toxic, combustible, or oxygen-deficient atmospheres and alerts users before dangerous levels are reached. Gas detectors operate on different sensing technologies such as catalytic bead, infrared, electrochemical, and photoionization detectors (PID), each designed for specific gas types. They are widely used in industries like mining, oil and gas, chemical plants, confined spaces, and firefighting.
Gas detectors can be portable (worn by workers for personal protection) or fixed (installed at strategic locations for continuous monitoring). When unsafe gas levels are detected, the device gives alarms through audible signals, visual indicators, or vibrations. Key parameters include detection range, sensitivity, response time, and calibration accuracy. By providing early warnings, gas detectors help prevent explosions, poisoning, and oxygen deficiency, ensuring compliance with occupational health and safety standards.