Temperature Measurement Sensor Types

In a temperature sensor the changes in the temperature correspond to change in its physical property like resistance or voltage.

Temperature measurement sensor types.

A temperature sensor as the name suggests senses the temperature i e. These sensors are effectively two identical diodes with temperature sensitive voltage vs current characteristics that can be used to monitor changes in temperature. There are different types of temperature sensors like temperature sensor ics like lm35. In addition to the characteristics of the sensors themselves operating range sensitivity linearity response time and so on you must consider the requirements each sensor type imposes on the measurement hardware.

These sensors use bi metallic strips which have different expansion rates at a particular temperature. This document goes into detail about the theory of operation types and considerations surrounding three types of temperature measurement sensors. This document provides context and information to help you select the best temperature sensor for your application needs. There are different types of temperature sensors used in the market today including resistance temperature detectors rtds thermocouples thermistors infrared sensor and semiconductor sensors.

Each sensor option thermocouple rtd and thermistor is unique in its design and theory of operation. They can be used to detect solids liquids or gases over a wide range of temperatures. A temperature sensor consists of two basic physical types. It measures the changes in the temperature.

They offer a linear response but have the lowest accuracy of the basic sensor types at 1 c to 5 c. Sensor thermistor thermocouple rtd pt100 temperature range. They all measure temperature by sensing some change in a physical characteristic. The seven basic types of temperature measurement sensors discussed here are thermocouples resistive temperature devices rtds thermistors infrared radiators bimetallic devices.

Widest type j is 210 to 1200 c type k is 95 to 1260 c other types can range as low as 270 c or as high as 3100 c. The sensors used for measurement can vary from capillary bulb thermometers and bi metal sensors to sensors that use varying voltage signals or resistance values. Most commonly temperature sensors are used to measure temperature in circuits which control a variety of equipment s.