SunTouch® - Pentair

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Temperature vs. Resistance Data
SunTouch systems use 10k Ωαττ thermistor sensors. When the solar sensor is disconnected from the
SunTouch system, the sensor will read 10k Ω at 77º F (25ºC). Refer to the following table for the resistance at
other temperatures. An accurate reading should give a temperature setting that is accurate
to ±0.2º C from 0 to 70 º C.
Temperature Resistance Temperature
Resistance
o
C o
F Ω o
C o
F Ω
-26 -15 139,300 16 60 15,310
-25 -13 130,300 18 65 13,480
-23 -10 118,000 21 70 11,880
-21 -5 100,200 24 75 10,500
-20 -4 97,000 25 77 10,000
-18 0 85,350 27 80 9,298
-15 5 72,910 29 85 8,250
-12 10 62,480 30 86 8,056
-9 15 53,640 32 90 7,331
-10 14 55,300 35 95 6,530
-7 20 46,230 38 100 5,826
-5 23 42,300 40 104 5,326
-4 25 39,910 41 105 5,209
-1 30 34,560 43 110 4,663
0 32 32,600 45 113 4,367
2 35 30,000 49 120 3,757
4.7 40 26,100 50 122 3,602
5 41 25,400 52 125 3,381
7 45 22,760 54 130 3,047
10 50 19,900 55 131 2,985
13 55 17,440 57 135 2,750
15 59 15,700
SunTouch Solar, Pool and Spa Control System Installation and User’s Guide