Subject: | TWP/SKYRAD/C1 - PIR2 ventilator fan failure |
DataStreams: | twpskyrad20sC1.a0, twpskyrad60sC1.b1
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Description: | During the time range specified the PIR2 output is questionable due to ventilator fan
failure. Although the PIR is temperature compensated, data review indicates that the PIR2
didn't compare as well with PIR1. Typical differences during full sun are approximately 10
w/m2. During this time period differences of 10-14 W/m2 were noted. |
Suggestions: | Use data with caution or use only PIR1 during this time period |
Measurements: | twpskyrad60sC1.b1: - down_long_hemisp2_std
- down_long_hemisp2
- down_long_hemisp2_min
- inst_down_long_hemisp2_case_temp
- down_long_hemisp2_max
- inst_down_long_hemisp2_dome_temp
- inst_down_long_hemisp2_tp
more
twpskyrad20sC1.a0: - inst_down_long_hemisp2_case_resist
- inst_down_long_hemisp2_tp
- inst_down_long_hemisp2_dome_resist
more
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