NTC Rod Thermistor Resistance Temp Coefficient @ 293K

In summary, the NTC rod thermistor resistance temp coefficient at 293K is a measure of the change in resistance of the thermistor as the temperature changes. It is calculated by measuring the resistance at two known temperatures and is affected by factors such as materials, manufacturing process, and operating conditions. It differs from the PTC thermistor resistance temp coefficient as it is negative and can be altered by changing materials and manufacturing process. However, careful calibration is important to ensure accurate temperature measurement.
  • #1
EIRE2003
108
0
what is the temperature coefficient of resistance of a th3 ntc rod thermistor @ 293K?
 
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  • #2
I googled thermistor temperature coefficient and this is the first hit:

http://www.ussensor.com/terminology.html

Looks to have lots of info that could help you out. I think that you can probably get ntc thermistors with a variety of temperature coefficients. Check out their product listings.
 
  • #3
There was a very good multi-part article written on NTC (negative temperature coefficient) thermistors in http://www.sensorsmag.com/articles/0597/negtemp/index.htm magazine online[/i]. Perhaps you can find some useful information there too.
 
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1. What is the NTC rod thermistor resistance temp coefficient at 293K?

The NTC rod thermistor resistance temp coefficient at 293K is a measure of the change in resistance of the thermistor as the temperature changes. It is typically expressed in units of %/K, which means the percentage change in resistance for every degree Kelvin change in temperature.

2. How is the NTC rod thermistor resistance temp coefficient at 293K calculated?

The NTC rod thermistor resistance temp coefficient at 293K is calculated by measuring the resistance of the thermistor at two known temperatures, typically 25°C and 100°C, and using the formula: Temp Coefficient = [(Resistance at 100°C - Resistance at 25°C) / Resistance at 25°C] * (100 / 75).

3. What factors can affect the NTC rod thermistor resistance temp coefficient at 293K?

The NTC rod thermistor resistance temp coefficient at 293K can be affected by factors such as the materials used in the thermistor, the manufacturing process, and the operating conditions (e.g. temperature, humidity, vibration). It is important to carefully choose and calibrate the thermistor to ensure accurate temperature measurement.

4. How does the NTC rod thermistor resistance temp coefficient at 293K differ from the PTC thermistor resistance temp coefficient?

The NTC rod thermistor resistance temp coefficient at 293K is negative, meaning that as the temperature increases, the resistance decreases. In contrast, the PTC thermistor resistance temp coefficient is positive, meaning that as the temperature increases, the resistance also increases. This makes the NTC rod thermistor suitable for temperature measurement, while the PTC thermistor is often used in overtemperature protection circuits.

5. Can the NTC rod thermistor resistance temp coefficient at 293K be altered?

Yes, the NTC rod thermistor resistance temp coefficient at 293K can be altered by changing the materials and manufacturing process used to make the thermistor. However, altering the temp coefficient may also affect other properties of the thermistor, so it is important to carefully choose and calibrate the thermistor for its intended use.

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