How can a thermistor be used to measure temperature?

Thermistor Response to Temperature As with any resistor, you can use the ohmmeter setting on your multimeter to measure thermistor resistance. The resistance value displayed on your multimeter should correspond to the ambient temperature near the thermistor. The resistance will change in response to temperature change.

Why does resistance in a thermistor decrease with temperature?

NTC thermistors, resistance decreases as temperature rises due to an increase in conduction electrons bumped up by thermal agitation from valency band.

What happens to a thermistor when heated?

The thermistor Their resistance decreases as the temperature increases. At low temperatures, the resistance of a thermistor is high, and little current can flow through them. At high temperatures, the resistance of a thermistor is low, and more current can flow through them.

What is objective of thermistor experiment?

A simple low-cost experiment for undergraduate students to determine the characteristics of a negative temperature coefficient of resistance thermistor is presented. The experiment measures the resistance–temperature and voltage–temperature characteristics of the thermistor.

Where is thermistor used?

Thermistors are used as temperature sensors. They can be found in every day appliances such as fire alarms, ovens and refrigerators. They are also used in digital thermometers and in many automotive applications to measure temperature.

Why thermistor is used?

Why is a thermistor used to measure temperature?

A thermistor is very useful as a device for measuring temperature because small changes in temperature produce rather large changes in its resistance. For example, the resistance of a commercial thermistor may change by an order of magnitude for a temperature change from 273 K to 373 K.

Can LabVIEW measure temperature with a thermistor?

Using LabVIEW to Measure Temperature with a Thermistor C. Briscoe and W. Dufee, University of Minnesota November, 2009 For resources, see the LabVIEW Resources page on the UMN ME2011 course site.

What is NTC and PTC thermistor?

Negative temperature coefficient ( NTC) thermistor:-resistance decrease with increase in temperature. The thermistor exhibits a highly non-linear characteristic of resistance vs. temperature. PTC thermistors can be used as heating elements in small temperature controlled ovens.

How do you measure the voltage drop across a thermistor?

Measure the resistance of the thermistor from room temperature to 100°C. You are provided with a LABVIEW program which will prompt you to push a button when the temperature reaches a certain value. It will then record the corresponding voltage drop across the thermistor (which is proportional to its resistance).