CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
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Section 6. <strong>CR200</strong>(X) Power Supply<br />
Reliable power is the foundation of a reliable data acquisition system. When<br />
designing a power supply, consideration should be made regarding worst-case<br />
power requirements and environmental extremes.<br />
Contact <strong>Campbell</strong> <strong>Scientific</strong> if assistance in selecting a power supply is needed,<br />
particularly with applications in extreme environments.<br />
6.1 Power Requirement<br />
The <strong>CR200</strong>(X) operates from a DC power supply with voltage ranging from 7 to<br />
16 V. It is internally protected against accidental polarity reversal. Input<br />
voltages in excess of 18 V may damage the <strong>CR200</strong>(X) and/or power supply.<br />
Caution The Battery + and Battery - terminals on the wiring panel are<br />
not regulated by the <strong>CR200</strong>(X); they obtain the same power directly the<br />
POWER IN terminal. When using the <strong>CR200</strong>(X) wiring panel to source<br />
power to other 12 V devices, be sure the power supply regulates the<br />
voltage within a the range specified by the manufacturer of the<br />
connected device.<br />
6.2 Calculating Power Consumption<br />
Read More! Power Requirements (p. 29).<br />
System operating time for batteries can be determined by dividing the battery<br />
capacity (ampere-hours) by the average system current drain (amperes). The<br />
<strong>CR200</strong>(X) typically has an average current drain of less than 3 mA. The duty<br />
cycle of the radio will add to the current drain. Be sure to include the current<br />
used by any powered sensors when calculating power supply requirements.<br />
6.3 Power Supplies<br />
Complete power supply information is available in manual or brochure form at<br />
www.campbellsci.com.<br />
6.3.1 Battery Connection<br />
Any clean, 7 to 16 VDC supply may be connected to the Battery + and Battery -<br />
connector terminals on the front panel. When connecting external power to the<br />
<strong>CR200</strong>(X), insert the positive lead into the Battery + terminal. Insert the ground<br />
lead into the Battery - terminal.<br />
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