Page 65 - 2021 High-Reliability, Harsh Environment Connectivity eBook

Temperature and Humidity Sensors
Temperature is the most widely sensed environmental parameter, and it plays a key role in condition monitoring and other industrial applications. A variety of technologies are implemented to monitor the temperature of everything from stator windings to bearings and much more. Temperature can be key to detecting wear, overload, and other conditions that can lead to premature equipment failure and corresponding downtime. Humidity sensing, in conjunction with temperature sensing, can be critical to the control and efficiency of a range of industrial processes. including those involving paints, solvents, and inks used for printing. Employee comfort and productivity are important considerations in most industrial facilities as well, and the monitoring and control of both humidity and temperature within a specified range have been shown to maximize productivity and help keep employees healthy. Non-contact temperature sensors, such as infrared thermopiles, are also used in body temperature scanning systems to help monitor employee wellness and in rotating equipment and other applications where physical contact with machinery is not possible.
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» Designed for precise temperature sensing in applications with serious space constraints, TE Connectivity’s TSYS03 digital temperature sensor features an industry-leading miniature XDFN6 package equipped with digital output and configurable I2C addresses.
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» Designed to quickly provide precise humidity measurements, TE Connectivity’s HTU31D sensor offers sustained performance even when exposed to extreme temperature and humidity.
Position Sensors
Position sensors are used to provide the precise feedback needed to efficiently and effectively monitor and control a wide range of industrial machinery, including drilling equipment, CNC machines, industrial robotics, and automation equipment. However, the hazards common to industrial environments, including temperature extremes, humidity, dirt, debris, and constant shock and vibration, pose serious challenges for many sensors. Anisotropic magnetostrictive (AMR) position sensors are one technology proven to provide accurate and reliable position sensing in harsh industrial environments. AMR sensors are also relatively insensitive to changes in temperatures and magnetic field strength. Other technologies, such as linear variable differential transformers (LVDTs), precision potentiometers, and cable extension sensors (e.g., string pots) are utilized in several industrial position sensing applications.
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