Learn all about temperature sensors and each of their advantages and disadvantages. Temperature Sensors Temperature sensors are among the most commonly used sensors. All types of equipment use temperature sensors, ranging from computers, cars, kitchen appliances, air conditioners, and (of course) home thermostats. The five most common types of temperature sensors include: Thermistor Thermocouple RTDs…
There are four main contact temperature-sensing devices available, divided in three families: thermocouples (self-generating sensors), resistance temperature detectors and thermistors (resistive sensors), and temperature-transducing ICs (PN or Semiconductive). These sensors translate the temperature into a reference voltage, resistance or current, which is then measured and processed and a numerical temperature value is computed. Types of…
Introduction Pressure Sensors – Motorola A sensor is a device that produces a measurable response to a change in a physical condition, such as temperature or thermal conductivity, or to a change in chemical concentration. Sensors are particularly useful for making in-situ measurements such as in industrial process control. Sensors are an important part to…
thermal junction, thermoelectric thermometer, or thermel, a temperature-measuring device consisting of two wires of different metals joined at each end. One junction is placed where the temperature is to be measured, and the other is kept at a constant lower temperature. A measuring instrument is connected in the circuit. The temperature difference causes the development of an electromotive force (known as the Seebeck effect)…
Working Principle of Thermocouples The operating principle of the thermocouple is based on the Peltier effect. The thermocouple circuit consists of two metals joined together to form two junctions of different temperatures. A Peltier emf is generated due to the difference in temperatures of the two junctions of the circuit. The total emf within the…
5 Types of Temperature Sensors Thermocouple: It is a type of temperature sensor, which is made by joining two dissimilar metals at one end. The joined end is referred to as the HOT JUNCTION. The other end of these dissimilar metals is referred to as the COLD END or COLD JUNCTION. The cold junction is…
The temperature of food plays a big role in assuring that certain products are well enough cooked to kill harmful organisms like bacteria. Similarly, many foods, including cooked food, become breeding grounds for other harmful organisms if unrefrigerated too long or even if left in a refrigerated environment for too long a time. Choosing the…
Here we have two practical applications involving circuits to sense the temperature using sensors and gives an electrical output. In both the circuits, we have used an analog circuit. So let us have a brief idea about analog circuits. A sensor is a unit that can measure a physical phenomenon and quantify the latter, in…
The Thermocouple The Thermocouple is by far the most commonly used type of all the temperature sensor types. Thermocouples are popular due to its simplicity, ease of use and their speed of response to changes in temperature, due mainly to their small size. Thermocouples also have the widest temperature range of all the temperature sensors from below…
1. Know if it is made with Mineral Insulated Cable. There are two main ways EGTs can be constructed. One way uses Mineral Insulated (MI) Cable. The other way uses thermocouple wire inside of a Stainless-Steel Tube. Quality EGTs will always be made using MI Cable. MI Cable uses Magnesium Oxide (MgO) Powder to insulate…