Thermistor Types and Applications

NTC thermistors are manufactured by mixing and sintering doped oxides of metals such as nickel, cobalt, manganese, iron, andcopper. The process is
carried out in a controlled environment, and ...

What is a Thermistor in sensors? How does it work?

Thermistor comes from "thermally sensitive resistor" and applies to temperature-dependent resistors that are based not on conductors as the RTD but on semiconductors. They are designated as NTC whe...

Resistive Temperature Detectors (RTDs) in Resistive Sensors

A temperature detector based upon a variation in electric resistance is usually designed as an RTD (resistance temperature detector). The most common metal for this application is platinum, which i...

Types and Applications Strain Gages

Strain gages are made of different metals such as the alloys constantan, advance, karma, and nichrome and also of semiconductors such as silicon
and germanium. Strain gages can be either bonde...

Fundamentals: piezoresistive effect

The piezoresistive effect is a change in the electrical resistivity of a semiconductor or metal when mechanical strain is applied. In contrast to the piezoelectric effect, the piez...

Resistive sensors potentiometers

Sensors based on the variation of the electric resistance of an element are probably the most common. That is because there are many physical quantities able to affect the electric resistance of a ...

Force and Torque Sensors in measurement system

A method to measure force (or torque) is to compare it with a known force, as is done on scales. Another method consists of measuring the effect of the
force on an elastic element, called a lo...

Flow Velocity and Flow-rate sensors in measurement system

Flow is the movement of a fluid in a channel or in open or closed conduits. The flow rate is the quantity of matter, in volume or weight, that flows in a
unit time. Flow-rate measurements are ...

What is a Pressure Sensor?

Pressure measurement in liquids or gases is common, particularly in process control. Pressure is defined as the force per unit area. To measure a pres-
sure, it is either compared with a known...

Bimetals Temperature Sensors

A bimetal is a sensor formed by two metals having different thermal expansion coefficients that are firmly joined, for example, by welding and that are
exposed to the same temperature. Wheneve...

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