Temperature Measurement Sensor Types

They can be used to detect solids liquids or gases over a wide range of temperatures.

Temperature measurement sensor types.

A temperature sensor consists of two basic physical types. 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. Temperature measuring sensors come in a wide variety and have one thing in common. 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.

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 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. This document goes into detail about the theory of operation types and considerations surrounding three types of temperature measurement sensors.

Sensor thermistor thermocouple rtd pt100 temperature range. 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. They all measure temperature by sensing some change in a physical characteristic.

In a temperature sensor the changes in the temperature correspond to change in its physical property like resistance or voltage. It measures the changes in the temperature. A temperature sensor as the name suggests senses the temperature i e. This document provides context and information to help you select the best temperature sensor for your application needs.

They offer a linear response but have the lowest accuracy of the basic sensor types at 1 c to 5 c. Most commonly temperature sensors are used to measure temperature in circuits which control a variety of equipment s. Contact temperature sensor types these types of temperature sensor are required to be in physical contact with the object being sensed and use conduction to monitor changes in temperature.