Campbell Scientific BlackGlobe Temperature Sensor for Heat Stress - Manual (Page 5)

Table of Contents
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1. Introduction.................................................................1
2. Cautionary Statements...............................................1
3. Initial Inspection .........................................................1
3.1 Ships With List.....................................................................................1
4. Overview......................................................................2
5. Specifications .............................................................2
5.1 Accuracy ..............................................................................................2
6. Installation...................................................................4
6.1 Siting ....................................................................................................4
6.2 Assembly and Mounting ......................................................................4
6.2.1 Mounting the BlackGlobe on the Mounting Arm .........................4
6.2.2 Mounting the BlackGlobe Assembly on a Horizontal
Crossarm....................................................................................6
7. Operation.....................................................................7
7.1 Wiring ..................................................................................................7
7.2 Calculations..........................................................................................8
7.2.1 Wet-Bulb Globe Thermometer Index (WBGT) ............................8
7.2.2 Dewpoint.......................................................................................8
7.2.3 Vapor Pressure ..............................................................................9
7.2.4 Saturated Vapor Pressure ..............................................................9
7.2.5 Wet-Bulb.......................................................................................9
7.2.6 Mean Site Barometric Pressure Calculation (SP_kPa)................10
7.3 Programming......................................................................................10
7.3.1 Example CR1000 Program .........................................................10
7.4 Long Lead Lengths ............................................................................12
8. Maintenance ..............................................................12
9. References ................................................................12
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