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将热电偶的输出电压转换成频率,然后由数字式频率计测出,此测温装置与镍—镍铬热电偶连接能测量5℃—800℃的温度,误差±1℃。热电偶的输出信号与温度之间的特性是非线性关系,取特性某一部分的近似值,仍然可以在预定的误差内进行温度测量。多数情况下测量的准确度足以达到±1℃,在这种情况下此装置具有电压频率变换器及标准刻度是有某些优点的。刻度直接提供输出数据的摄氏度数。
The thermocouple output voltage is converted to frequency, and then measured by the digital frequency, the temperature measuring device and the nickel-nickel-chromium thermocouple can measure the temperature of 5 ℃ -800 ℃, the error ± 1 ℃. Thermocouple output signal and the temperature characteristics of the relationship between the non-linear, take an approximation of a part of the characteristic, can still be within the predetermined error temperature measurement. In most cases the accuracy of the measurement is sufficient to reach ± 1 ° C. There are certain advantages to having a voltage to frequency converter and a standard scale for this device. Scale directly provide the output data in degrees Celsius.