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Specifications
The histograms shown in
Figure 36
Figure 37
characterize the Gaussian system noise
and
distribution for each of the available filter types on the DT9871U and DT9874. Note that
converting V error to temperature error depends on thermocouple type. For example, a K
thermocouple changes approximately 39 V per degrees C; therefore, a noise level of 0.1 V
C error (0.1 V / 39 V) for a type K thermocouple.
adds less than 0.003
Figure 36: System Noise on the DT9871U and DT9874 Using No Software Filter (Raw Filter)
Figure 37: System Noise on the DT9871U and DT9874 Using the Moving Average Filter
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