chemical sensor

A chemical sensor is a device that detects specific substances, such as gases or liquids, by producing a measurable signal when they are present. It works by having a sensitive element that reacts to the target chemical, often through changes in electrical properties or color. This allows the sensor to monitor environmental conditions, safety levels, or process quality in real-time. Chemical sensors are used in various fields, including healthcare (for blood tests), environmental monitoring (air and water quality), and industrial safety, helping to identify and quantify chemicals efficiently and accurately.