System specifications

Processor: ARM Cortex M4 running at 144 MHz

Memory:

  • CPU Drive: 80 MB serial flash
  • Data Storage: 30 MB serial flash
  • Operating System: 2 MB flash
  • Settings, Calibration, TLS Certificates and Key, System Information: 3 MB serial flash
  • Background Tasks and Table Information, Buffers, System Memory, Program Variables: 756 KB RAM
NOTE:

CR300 series dataloggers with serial numbers 2812 and older have a 5 MB CPU drive and 10 MB serial flash storage. CR300 series data loggers with serial numbers 2813 and newer, and all CR310 dataloggers have an 80 MB CPU drive and 30 MB serial flash storage.

Program Execution Period: 100 ms to 1 day

Real-Time Clock:

  • Battery backed while external power is disconnected
  • Resolution: 1 ms
  • Accuracy: ±1 min. per month

Wiring Panel Temperature: Measured using a thermistor, located on the processor board.

NOTE:

The measurement from the PanelTemp() instruction does not accurately reflect the temperature of the wiring panel, since it measures the temperature of the main processing board. Therefore, if the data logger processor, or charge (CHG) input are active, the PanelTemp() measurement will be warmer than ambient. This should be taken into consideration if this measurement is used as a reference temperature for other measurements such as thermocouples.