Campbell-scientific CR3000 Micrologger Manual de usuario Pagina 313

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Section 8. Operation
313
Figure 98: Input error calculation
Input Error Examples: Type T Thermocouple @ 45°C
These examples demonstrate that in the environmental temperature range, input-
offset error is much greater than input-gain error because a small input range is
used.
Conditions:
CR3000moduletemperature,25to50°C
Temperature=45°C
Referencetemperature=25°C
DeltaT(temperaturedifference)=20°C
Thermocoupleoutputmultiplierat45°C=42.4µV°C
1
Thermocoupleoutput=20°C*42.4µV°C
1
=830.7µV
Inputrange=±20mV
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