Optical sensors are integral parts of many common devices, like Computers, Photo-Copy Machines and Light Fixtures that turn on automatically in the dark. And also in alarm systems, synchros for photographic flashes and systems that can detect the presence of objects.
The Proximity Sensors are commonly use in Industrial Automation for object detection, position, inspection, and counting, Part detection on industrial conveyor systems. also for Collision detection on robots.
They are commonly used in applications like level monitoring in chemical, water treatment, savage treatment, food and beverages, battery industries and involving high pressure and temperature.
Humidity sensors are electronic devices that measure and report the moisture and air temperature of the surrounding environment where they are deployed e.g., in air, soil, or confined spaces. Humidity measurements indicate the amount of water vapor presented in the air.
Thermistors are used as temperature sensors in fire alarms, ovens and refrigerators, digital thermometers and in automotive applications to measurement of the temperature.
The gauges are used to detect the pressure of various industrial systems and also pneumatic and hydraulic installations. Mostly these are use for the safety purpose.