What are chemical sensors?

Chemical sensors are measurement devices that convert a chemical or physical property of a specific analyte into a measurable signal, whose magnitude is normally proportional to the concentration of the analyte [3]. From: Carbon Nanotechnology, 2006.

What is chemical sensor in IoT?

Chemical sensors have a wide range of applications in industrial IoT, smart homes, and cities. By being able to detect chemical-level changes in air and liquids, these types of sensors for IoT help company managers and public officials ensure the well-being of employees or city residents.

What sensors are used in a chemical factory?

Chemical sensors mainly classified into four groups. That are; 1) Spectrometry and Chromatography, 2) Electrochemical sensors, 3) Mass sensors and 4) Optical sensors.

Why are chemical sensors important?

Biosensors and chemical sensors are surveillance and monitoring electrochemical devices, which can interact with various biological as well as chemical components and give valuable information.

Where are chemical sensor used?

Chemical sensors are used in myriad applications, such as medical, automotive, nanotechnology and home detection systems (i.e. carbon monoxide detectors).

What is the working principle of chemical sensor?

Its working principle is that oxidative combustion of the combustible gas occurs directly or by using catalysts in the energized state, accordingly, the burning gas sensitive material (Pt wire) is heated up, resulting in the shift in the resistance value.

What is gas and chemical sensors?

Gas and Chemical Sensors/Detectors are fixed or portable electronic devices used to sense the presence and properties of various gases or chemicals and relay signals to the inputs of controllers or visual displays.

How do you detect chemicals?

A large number of technologies are available for detecting vapor-phase chemicals in the atmosphere, including color-change technologies, ion mass and mobility spectrometers, technologies based on infrared absorption and emission spectroscopy, chromatography, optical emission/absorption methods, physical-and chemical- …

What are the basic characteristics of a useful chemical sensor?

The ideal chemical sensor is an inexpensive, portable, foolproof device that responds with perfect and instantaneous selectivity to a particular target chemical substance (analyte) present in any desired medium in order to produce a measurable signal output at any required analyte concentration.