Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 303
Operation, Panel-temperature error summary
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Section 8. Operation outside the chamber. The temperature of this bar was also measured by another datalogger. Differences between the temperature measured by one of the thermocouples and the actual temperature of the bar are due to the temperature difference between the terminals the thermocouple is connected to and the thermistor reference (the figures have been corrected for thermistor errors). Figure Panel-Temperature Gradients (Low Temperature to High) (p. 304) shows the errors when the chamber was changed from low temperature to high in approximately 15 minutes. Figure Panel-Temperature Gradients (High Temperature to Low) (p. 304) shows the results when going from high temperature to low. During rapid temperature changes, the panel thermistor will tend to lag behind terminal temperature because it is mounted deeper in the CR1000. Figure 92: Panel-temperature error summary 303
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