Campbell CNR4, Руководство по эксплуатации продукта

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CNR4 Net Radiometer
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FIGURE 7-3. The CNR4 sensor with SOLAR and TEMP cables
FIGURE 7-4. The marks on the end of the CNR4: S for SOLAR cable,
and T for TEMP cable
The four radiation outputs can be measured using differential or single-ended
inputs on the data logger. A differential voltage measurement is recommended
because it has better noise rejection than a single-ended measurement. If
differential terminals are not available, single-ended measurements can be
used. The acceptability of a single-ended measurement can be determined by
comparing the results of single-ended and differential measurements made
under the same conditions.
When differential inputs are used, jumper the low side of the input
to ⏚ to keep the signal in common mode range.
TABLE 7-1 shows the data logger connections for the SOLAR cable, and
TABLE 7-2 shows the data logger connections for the TEMP cable. The
cables have the white band at the pigtail end of the cable with the colo u r
keys (FIGURE 7-5 , FIGURE 7-6 ).
NOTE