CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
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Section 3. Overview<br />
3.1.8.2 Protection from Voltage Transients<br />
Read More! See Grounding (p. 55).<br />
The <strong>CR200</strong>(X) must be grounded to minimize the risk of damage by voltage<br />
transients associated with power surges and lightning induced transients. Earth<br />
grounding is required to form a complete circuit for voltage clamping devices<br />
internal to the <strong>CR200</strong>(X).<br />
3.1.8.3 Calibration<br />
Read More! See Self-Calibration p. 41.<br />
The <strong>CR200</strong>(X) uses an internal voltage reference to routinely calibrate itself.<br />
3.1.8.4 Replacing the Internal Battery<br />
Caution Fire, explosion, and severe burn hazard! Misuse or improper<br />
installation of the lithium battery can cause severe injury. Do not<br />
recharge, disassemble, heat above 100°C (212°F), solder directly to the<br />
cell, incinerate, or expose contents to water. Dispose of spent lithium<br />
batteries properly.<br />
The <strong>CR200</strong>(X) contains a lithium battery that operates the clock and SRAM<br />
when the <strong>CR200</strong>(X) is not powered. The <strong>CR200</strong>(X) does not draw power from<br />
the lithium battery while it is powered by an external source. In a <strong>CR200</strong>(X)<br />
stored at room temperature, the lithium battery should last approximately 5<br />
years (less at temperature extremes). Where the <strong>CR200</strong>(X) is powered most or<br />
all of the time the lithium cell should last much longer.<br />
The internal lithium battery must be replaced periodically. Factory replacement<br />
is recommended. Contact <strong>Campbell</strong> <strong>Scientific</strong> to obtain an RMA prior to<br />
shipping the <strong>CR200</strong>(X).<br />
If the lithium cell is removed or allowed to discharge below the safe level, the<br />
<strong>CR200</strong>(X) will still operate correctly while powered. Without the lithium<br />
battery, the clock will reset and data is lost when power is removed.<br />
A replacement lithium battery can be purchased from <strong>Campbell</strong> (part number<br />
15598). TABLE. <strong>CR200</strong>(X) Lithium Battery Specifications p. 33 lists the<br />
specifications of the battery. However, <strong>Campbell</strong> <strong>Scientific</strong> recommends that the<br />
battery be replaced at the factory.<br />
33