Campbell Scientific 083E Relative Humidity and Temperature Sensor - Manual (Page 18)

Model 083E Relative Humidity and Temperature Sensor
8.3 Temperature Table
The temperature sensor is a resistive device. A resistance measurement across
the red and black leads of the 083E should equal the resistances listed in Table
8-1 at the stated temperatures.
TABLE 8-1. Model 083E-1-X Temperature vs. Sensor Resistance
YSI thermistor bead 44212
Temp ( ° C) RCAL (Ω Ohms) Temp ( ° C) RCAL (Ω Ohms) Temp ( ° C) RCAL (Ω Ohms)
-50 158181 -16 49648 18 22404
-49 150561 -15 48389 19 21908
-48 143555 -14 47173 20 21423
-47 137093 -13 45997 21 20949
-46 131114 -12 44861 22 20484
-45 125564 -11 43761 23 20029
-44 120400 -10 42696 24 19583
-43 115583 -9 41665 25 19147
-42 111079 -8 40665 26 18719
-41 106858 -7 39696 27 18300
-40 102895 -6 38755 28 17889
-39 99166 -5 37843 29 17487
-38 95651 -4 36957 30 17092
-37 92333 -3 36097 31 16705
-36 89196 -2 35260 32 16325
-35 86224 -1 34447 33 15952
-34 83406 0 33657 34 15586
-33 80729 1 32888 35 15227
-32 78183 2 32139 36 14875
-31 75760 3 31410 37 14529
-30 73449 4 30700 38 14190
-29 71245 5 30009 39 13856
-28 69138 6 29335 40 13528
-27 67124 7 28677 41 13206
-26 65195 8 28037 42 12890
-25 63348 9 27411 43 12579
-24 61576 10 26801 44 12274
-23 59875 11 26206 45 11974
-22 58242 12 25624 46 11678
-21 56671 13 25056 47 11388
-20 55160 14 24501 48 11102
-19 53705 15 23959 49 10822
-18 52303 16 23429 50 10545
-17 50952 17 22911
Following are polynomial expressions derived from Table 8-1.
T
c
= ((((R
t
⎯1 ) + (23100 ⎯1 )) ⎯1 ) – 13698.3) ⁄ -129.163
R
t
= ((((-129.163 T
c
) + 13698.3) ⎯1 ) – 23100 ⎯1 ) ⎯1
Where: T
c
= temperature in °C and R
t
= sensor resistance in ohms (Ω)
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