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)…
What’s the connection between electricity and heat? Have you noticed that when we talk about conduction in science we can be referring to two things? Sometimes we mean heat and sometimes we mean electricity. A metal like iron or gold conducts both heat and electricity really well; a material like a plastic doesn’t conduct either of them very well at all. There is a connection between…
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…
Temperature sensors are used just about everywhere. There are in the homes we live in, the cars we drive, the schools we learn in. They are even in planes, trains and boats. You will also find them in all sorts of electrical appliances and electronic devices. Refrigerators, stoves, hot water tanks as well as computers,…
Introduction Temperature is the most widely sensed parameter of all physical parameters because of its significance on materials and processes at the molecular level. Temperature is a specific degree of hotness or coldness as referenced to a specific scale. Temperature is also defined as the amount of heat energy in a system or object. Heat…