4 long lead lengths, Maintenance, References – Campbell Scientific BlackGlobe Temperature Sensor for Heat Stress User Manual
Page 18: Long lead lengths
BlackGlobe Temperature Sensor for Heat Stress
7.4 Long Lead Lengths
If the BlackGlobe has lead lengths greater than 300 feet, a longer settling time
before the measurement is made is required. For CRBasic loggers, the 60 and
50 Hz integration options include a 3 ms settling time; longer settling times
also can be entered into the Settling Time parameter. In Edlog, use the DC
Half Bridge Instruction (Instruction 4) with a 2 ms delay to measure the
temperature.
Do not use the BlackGlobe with long lead lengths in an
electrically noisy environment.
CAUTION
8. Maintenance
The BlackGlobe requires minimal maintenance. Check monthly to ensure the
sphere is free from dirt and debris. Clean with water and soft cloth if
necessary. Do not use solvents as they may dissolve the paint.
9. References
Lowe, P.R. 1977. J. Appl. Meteor., 16:100-103
Tetens, O. 1930. Z. Geophys., 6:297
Wallace, J.M. and P.V. Hobbes, 1977: Atmospheric Science: An Introductory
Survey, Academic Press, pp. 59 – 61
12
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