Section 7. Installation
Note Lightning strikes may damage or destroy the CR800 and
associated sensors and power supplies.
In addition to protections discussed in , use of a simple lightning rod and low-
resistance path to earth ground is adequate protection in many installations. .
FIGURE 31: Lightning Protection Scheme
7.3.2 Single-Ended Measurement Reference
Low-level, single-ended voltage measurements (<200 mV) are sensitive to ground
potential fluctuation due to changing return currents from 12V, SW12, 5V, and
C1 – C4 terminals. The CR800 grounding scheme is designed to minimize these
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