Is an NTC used to detect temperature?
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In chemical manufacturing companies, does anyone use NTCs (thermistors) to measure temperature? It is said that they offer higher precision compared to Pt100 sensors
This post was last edited by qugd on 2017-5-31 14:54. They certainly exist, but there aren’t many applications for them. Firstly, the NTC temperature sensor does not have very good linearity, and its operating range is relatively narrow, which limits the applications of such sensors. The second reason is that the reliability of such temperature elements is lower than that of metal temperature elements, and there are significant variations depending on the manufacturing batch; therefore, calibrating such temperature elements is a very troublesome task. It is not recommended to use such temperature sensors in process industries, but for certain assembly and manufacturing applications, their low cost and fast response time mean that there should be no problem using them. In industrial products, some sensing probes are equipped with such NTC temperature elements, mainly due to their low cost; moreover, the probes in question do not require absolutely accurate temperature readings, so there are no major issues with their use. In sensing probes that require accurate temperature measurement or precise temperature compensation, such as in water quality analysis and acid-base concentration analysis, standard platinum resistance temperature elements are typically built into the conductivity probes. For probes used for pH, ORP, and photometric measurements at certain pH levels, the use of NTC temperature sensors can help reduce manufacturing costs; however, their temperature measurement accuracy, reliability, and stability are inferior to those of platinum resistance temperature sensors. .
I’m not sure whether NTCs are used to measure temperature for temperature compensation in high-accuracy smart transmitters.
Pig Brother is really impressive. I used to think that intelligent voltage transformers obtained their temperature characteristic data through sensor measurements, with these data being stored in the sensors’ memory; in actual use, the measured temperature was used to retrieve this data for use in calculations and compensations. It seems there was indeed a mistake.
It’s meaningful and profound; I’ve learned from it
There are many, usually used as switches. It’s impossible to achieve higher precision than PT100.