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BlackGlobe Temperature

Sensor for Heat Stress

Revision: 9/13

C o p y r i g h t © 2 0 1 3

C a m p b e l l S c i e n t i f i c , I n c .

Содержание BlackGlobe

Страница 1: ...BlackGlobe Temperature Sensor for Heat Stress Revision 9 13 C o p y r i g h t 2 0 1 3 C a m p b e l l S c i e n t i f i c I n c...

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Страница 3: ...emoving reinstalling and shipping defective products to Campbell Campbell will return such products by surface carrier prepaid within the continental United States of America To all other locations Ca...

Страница 4: ...g container Campbell Scientific s shipping address is CAMPBELL SCIENTIFIC INC RMA _____ 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Statement of Product Clea...

Страница 5: ...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 Calculati...

Страница 6: ...mits 4 6 1 Mounting kit components 5 6 2 Nuts and lock washers on mounting bolt 5 6 3 BlackGlobe fitting and cable alignment 6 6 4 BlackGlobe mounted to a crossarm front view 7 6 5 BlackGlobe mounted...

Страница 7: ...handle it with care The black outer jacket of the cable is Santoprene rubber This compound was chosen for its resistance to temperature extremes moisture and UV degradation However this jacket will su...

Страница 8: ...able Length 305 m 1000 ft The black outer jacket of the cable is Santoprene rubber This compound was chosen for its resistance to temperature extremes moisture and UV degradation However this jacket w...

Страница 9: ...s TABLE 5 1 Thermistor Interchangeability Specification Temperature C Temperature Tolerance C 5 0 14 0 to 70 0 10 85 0 25 95 0 35 TABLE 5 2 Polynomial Error 5 to 95 0 5 C 3 to 90 0 1 C FIGURE 5 1 Poly...

Страница 10: ...2 Assembly and Mounting Tools required for installing on a tripod or tower Adjustable end wrench or 7 16 in and 1 2 in open end wrench Small screwdriver provided with the datalogger Small pair of dia...

Страница 11: ...components 1 Place the mounting bolt through the hole in the mounting arm as shown in FIGURE 6 2 2 Slide one of the lock washers against the mounting arm 3 Thread both nuts about half way down the bo...

Страница 12: ...is tightened down Cable Gland FIGURE 6 3 BlackGlobe fitting and cable alignment 6 2 2 Mounting the BlackGlobe Assembly on a Horizontal Crossarm The BlackGlobe assembly must be mounted on a horizontal...

Страница 13: ...he BlackGlobe to a Campbell Scientific datalogger is given in TABLE 7 1 Temperature is measured with one single ended input channel and a voltage excitation channel Multiple probes can be connected to...

Страница 14: ...wet bulb evaporative heat and ambient air dry bulb temperatures are required Equation 1 In the approach discussed here air temperature and relative humidity measurements are used to calculate the actu...

Страница 15: ...7 2 5 Wet Bulb Wet bulb is derived using an iterative process The wet bulb temperature lies somewhere between the dry bulb temperature air temperature and the dewpoint temperature The datalogger uses...

Страница 16: ...b globe temperature Measurements of air temperature and relative humidity are supplied by an HC2S3 in this example Calculations for dewpoint wet bulb and wet bulb globe temperature are also included C...

Страница 17: ...ltSe AirTempC 1 mV2500 1 0 0 _60Hz 0 1 40 VoltSe AirRH 1 mV2500 2 0 0 _60Hz 0 1 0 If AirRH 100 AND AirRH 108 Then AirRH 100 SatVP SVP_kPa AirTempC VP_kPa SVP_kPa AirRH 100 DewPoint DewPnt_C AirTempC A...

Страница 18: ...f 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 BlackGlo...

Страница 19: ...s such as temperature humidity and wind are more easily measured to assess heat stress TABLE A 1 provides some guidelines for using the WBGT index TABLE A 1 Sample use of WBGT Index Readings Guideline...

Страница 20: ...Appendix A The Theory of BlackGlobe Temperature and Heat Stress A 2...

Страница 21: ...temperature and relative humidity values Calculations for dewpoint wet bulb and wet bulb globe temperature are also included CR10X Program BLACKGLOBE CSI Date June 2013 Table 1 Program 01 5 0000 Execu...

Страница 22: ...all reps w Exchan 1 5 1000 mV Excitation 6 3 Loc BGTemp_C 7 200 Multiplier 8 0 Offset 11 Polynomial P55 1 1 Reps 2 3 X Loc BGTemp_C 3 3 F X Loc BGTemp_C 4 26 97 C0 5 69 635 C1 6 40 66 C2 7 16 573 C3...

Страница 23: ...3 22 Z Loc scratch3 19 Z X Y P35 1 22 X Loc scratch3 2 20 Y Loc scratch1 3 22 Z Loc scratch3 20 Z X Y P38 1 21 X Loc scratch2 2 22 Y Loc scratch3 3 7 Z Loc DewPnt_C 21 If X Y P88 1 7 X Loc DewPnt_C 2...

Страница 24: ...X F P37 1 12 X Loc new_wbT 2 0 5 F 3 12 Z Loc new_wbT 31 Z X Y P33 1 12 X Loc new_wbT 2 15 Y Loc LowerTmp 3 12 Z Loc new_wbT 32 Wet Dry Bulb Temp to VP P57 1 9 Pressure Loc SVP_kPa 2 4 Dry bulb Loc A...

Страница 25: ...bulb temperature 43 Z X P31 1 12 X Loc new_wbT 2 8 Z Loc WetBlb_C Calculate Wet Bulb Globe HUMIDEX temperature 44 Z X F P37 1 4 X Loc AirTempC 2 0 1 F 3 20 Z Loc scratch1 45 Z X F P37 1 3 X Loc BGTem...

Страница 26: ...1 1 1 Reps 2 7 Loc DewPnt_C 54 Average P71 1 1 Reps 2 8 Loc WetBlb_C 55 Average P71 1 1 Reps 2 6 Loc WBGT_C 56 Sample P70 1 17 Reps 2 3 Loc BGTemp_C Daily station status data 57 If time is P92 1 0 Min...

Страница 27: ...utines End Program TABLE B 1 Polynomial Coefficients Coefficient Value C0 26 97 C1 69 635 C2 40 66 C3 16 573 C4 3 455 C5 0 301 TABLE B 2 Actual Temperature Sensor Resistance and Computed Temperature T...

Страница 28: ...115179 22 07 24 00 104796 24 05 26 00 95449 26 02 28 00 87026 27 99 30 00 79428 29 97 32 00 72567 31 94 34 00 66365 33 93 36 00 60752 35 93 38 00 55668 37 93 40 00 51058 39 94 42 00 46873 41 96 44 00...

Страница 29: ...00 00 5574 3 99 31 B 2 Edlog Programming for Long Lead Lengths The following is a portion of an example CR10X program that uses the Excite Delay SE P4 instead of the AC Half Bridge P5 01 Excite Delay...

Страница 30: ...Appendix B Edlog Programming Examples B 10 02 Polynomial P55 1 1 Reps 2 1 X Loc BGTemp_C 3 1 F X Loc BGTemp_C 4 26 97 C0 5 69 635 C1 6 40 66 C2 7 16 573 C3 8 3 455 C4 9 301 C5...

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Страница 32: ...W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300 N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc info camp...

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