DS1620S/T&R

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Temperature sensing is an important measurement tool in many industries such as food processing, medical research, geothermal energy production, and aerospace. To accurately measure temperatures a reliable temperature sensor is required. The DS1620S/T&R sensor from Dallas Semiconductor is an analog and digital output temperature sensor that provides reliable temperature measurements for a wide range of applications.

Applications

The DS1620S/T&R temperature sensor is used in a variety of applications, such as medical equipment, industrial control systems, robotic systems, and other electronic systems requiring precise temperature control. The sensor can be used for measuring both ambient temperature and hot spots within an environment. It can be used to measure temperatures in liquid, gas, or solid materials, and is able to accurately measure temperatures from -55°C to +125°C (± 0.5°C accuracy) with a resolution of 0.5°C. The sensor is suitable for use in hazardous environments, including Class 1, Division 1, Groups A, B, C, and D. It is also UL approved and meets NEMA 4 requirements.

Working Principle

The DS1620S/T&R temperature sensor is a two-wire, serial temperature sensor that uses the Dallas Semiconductor 1-Wire protocol. The sensor contains an analog-to-digital converter and thermistor that is connected to a processor via a digital line. The processor sends commands to the sensor to measure the temperature and then reads and stores the data from the sensor. The processor can then use the data to control a variety of systems, such as temperature regulation or alarms.

The thermistor within the sensor is a resistive device that has a resistance that is inversely proportional to the temperature. As the temperature increases, the resistance of the thermistor decreases. The processor measures the voltage across the thermistor, then converts the voltage to a temperature value using the equation V = RT /N, where R is the resistance of the thermistor and N is a calibration factor.

The DS1620S/T&R temperature sensor provides both an analog and digital output, which makes it suitable for a variety of applications. The digital output is a serial data line that can be used to feed temperature data directly into a computer to control temperature regulation systems and alarms. The analog output is a voltage signal that can be read directly by an analog-to-digital converter or fed into an analog device for further processing.

Conclusion

The DS1620S/T&R temperature sensor is a reliable and accurate temperature sensing device that is suitable for both hazardous and non-hazardous environments. The sensor offers both an analog and digital output, making it suitable for many applications. The sensor also meets stringent safety requirements and is UL approved and NEMA 4 compliant.

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