NTC calibration and multiple temperature sensors: Difference between revisions
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== NTC == | == NTC == | ||
Note that the temperature of the sensor rises when the current supplies through the resistor. | |||
Negative Temperature Coefficient, NTCLE100E3101JB0 or similar (MF52B NTC Thermistor). The NTC is connected in series with a "shunt" resistor <math>R_1</math>, see [[Measurement of resistors: voltage divider]]. The total resistance of the circuit is <math>R = R_1 + R_{NTC}</math>, which gives | Negative Temperature Coefficient, NTCLE100E3101JB0 or similar (MF52B NTC Thermistor). The NTC is connected in series with a "shunt" resistor <math>R_1</math>, see [[Measurement of resistors: voltage divider]]. The total resistance of the circuit is <math>R = R_1 + R_{NTC}</math>, which gives | ||
<math> | <math> | ||
\begin{align | \begin{align} | ||
R_{NTC} &= \frac{U_\text{measured}}{U-U_\text{measured}}R_1 \\ | R_{NTC} &= \frac{U_\text{measured}}{U-U_\text{measured}}R_1 \\ | ||
\end{align | \end{align} | ||
</math> | </math> | ||
<math> | <math> | ||
\begin{align | \begin{align} | ||
R_{NTC} &= \frac{U_\text{measured}}{U-U_\text{measured}}R_1 \\ | R_{NTC} &= \frac{U_\text{measured}}{U-U_\text{measured}}R_1 \\ | ||
\end{align | \end{align} | ||
</math> | </math> | ||
=== Calibarating: Steinhart-Hart Equation === | |||
Steinhart-Hart equation is widely used | |||
<math> | |||
\frac 1T = A + B \ln(Rt= + C (\ln (Rt))^3 | |||
</math> | |||
=== LM35DZ == | === LM35DZ == | ||
== | == | ||
Revision as of 15:36, 6 September 2023
Introduction
Calibration of NTC sensors and different
NTC
Note that the temperature of the sensor rises when the current supplies through the resistor.
Negative Temperature Coefficient, NTCLE100E3101JB0 or similar (MF52B NTC Thermistor). The NTC is connected in series with a "shunt" resistor Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle R_1} , see Measurement of resistors: voltage divider. The total resistance of the circuit is Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle R = R_1 + R_{NTC}} , which gives
Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \begin{align} R_{NTC} &= \frac{U_\text{measured}}{U-U_\text{measured}}R_1 \\ \end{align} }
Calibarating: Steinhart-Hart Equation
Steinhart-Hart equation is widely used
Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle {\frac {1}{T}}=A+B\ln(Rt=+C(\ln(Rt))^{3}}
= LM35DZ
==
