Physical Specifications; Power Requirements - Campbell CR300 Series Product Manual

Real-Time Clock:
Battery backed while external power is disconnected
l
Resolution: 1 ms
l
Accuracy: ±1 min. per month
l
Wiring Panel Temperature: Measured using a thermistor, located on the processor board.
NOTE:
The measurement from 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.

19.2 Physical specifications

Dimensions (additional clearance required for cables, wires and antennas):
CR300: 13.97 x 7.62 x 4.56 cm (5.5 x 3.0 x 1.8 in). For CAD files, see
l
2D Drawings.
CR310: 16.3 x 8.4 x 5.6 cm (6.4 x 3.3 x 2.2 in). For CAD files, see
l
Drawings.
Weight/Mass:
CR300: 242 g (0.53 lb)
l
CR300-WIFI/RF407/RF412/RF422: 250 g (0.55 lb)
l
CR310: 288 g (0.64 lb)
l
CR310-WIFI/RF407/RF412/RF422: 306 g (0.68 lb)
l
Case Material: Powder-coated aluminum

19.3 Power requirements

Power specifications for a communications option are shown within the specifications section for
that option.
Protection: Power inputs are protected against surge, over-voltage, over-current, and reverse
power. IEC 61000-4 Class 4 level.
PanelTemp()
instruction does not accurately reflect the
CR300 Images and CAD
CR310 Images and CAD 2D
19. CR300 series Specifications 184