The resistance-temperature characteristic of ceramic ionic dryer factory solutions can be approximately expressed by the following formula: R = R0 * exp{B * (1/T - 1/T0)}: R: the resistance value at temperature T (K), Ro: the resistance value at temperature T0 (K), B: the B value, *T(K) = t(ºC) + 273.15. In fact, the B value of ceramic ionic dryer factory solutions is not constant and its variation size varies depending on the material composition, and it can even reach 5K/°C. Therefore, when applying formula 1 within a wide temperature range, there will be a certain error between it and the measured values. Here, if the B value in formula 1 is calculated using the function of temperature as shown in formula 2, the error between it and the measured values can be reduced, and it can be considered approximately equal.

BT = CT2 + DT + E. In this equation, C, D, and E are constants. Additionally, fluctuations in the B value caused by different production conditions will lead to changes in the constant E, while the constants C and D remain unchanged. Therefore, when discussing the fluctuation amount of the B value, only the constant E needs to be considered. The calculation of constants C, D, and E can be done using the data of 4 points (temperature, resistance value) (T0, R0). (T1, R1). (T2, R2) and (T3, R3), through equations 3 to 6. First, using equation 3, B1, B2, and B3 can be calculated based on the resistance values of T0 and T1, T2, and T3. Then, substitute them into the following formulas.

Resistance value calculation example: Based on the resistance-temperature characteristic table, calculate the resistance value at 25°C to be 5 (kΩ), with a B value deviation of 50 (K). For the ceramic ionic dryer factory solution, find the resistance value within the range of 10°C to 30°C. Steps (1) According to the resistance-temperature characteristic table, calculate the constants C, D, and E. To = 25 + 273.15 T1 = 10 + 273.15 T2 = 20 + 273.15 T3 = 30 + 273.15 (2) Substitute BT = CT^2 + DT + E + 50, and calculate BT. (3) Substitute the values into R = 5 * exp{(BT1/T - 1/298.15)}, and calculate R. * T: 10 + 273.15 to 30 + 273.15.

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