WattMaster WCC III part 4 - Manual (Page 52)

WCC3.EXE SCREEN DESCRIPTIONS
WCC III Technical Guide 3-48
Analog Input Thermistor+ Screen
Temperature / Resistance / Voltage Chart
for the BAPI™ (Alerton™) Standard
3K @ 77 Deg F Thermistor Sensor
Temp
(ºF)
Temp
(ºC)
Resistance
(Ohms)
Voltage @
Input (VDC)
-39 -39.44 96,941 4.526
-37 -38.33 90,108 4.494
-35 -37.22 83,804 4.461
-33 -36.11 77,983 4.426
-31 -35.00 72,607 4.387
-29 -33.89 67,637 4.350
-27 -32.78 63,041 4.308
-25 -31.67 58,789 4.267
-23 -30.56 54,851 4.222
-21 -29.44 51,173 4.176
-19 -28.33 47,795 4.128
-17 -27.22 44,663 4.078
-15 -26.11 41,756 4.028
-13 -25.00 39,059 3.975
-11 -23.89 36,553 3.921
-9 -22.78 34,225 3.864
-7 -21.67 32,061 3.806
-5 -20.56 30,067 3.748
-3 -19.44 28,157 3.684
-1 -18.33 26,414 3.622
1 -17.22 24,790 3.557
3 -16.11 23,277 3.493
5 -15.00 21,865 3.427
7 -13.89 20,549 3.360
9 -12.78 19,320 3.293
11 -11.67 18,173 3.223
13 -10.56 17,101 3.154
15 -9.44 16,091 3.082
17 -8.33 15,155 3.012
19 -7.22 14,280 2.940
Here are the three coeffi cients values for WattMaster Controls
standard 10K @ 77 Deg F type 4 Thermistor Sensor.
b0 = 0.001028340 (calculated as 0.0010283404
and rounded off to 0.001028340)
b1 = 0.000239398 (calculated as 0.00023939782
and rounded off to 0.000239398)
b3 = 0.0000001567 (calculated as 0.00000015669566
and rounded off to 0.0000001567)
Here are the three coeffi cients values for the BAPI™ compatible
Alerton™ standard 3K @ 77 Deg F Thermistor Sensor.
b0 = 0.0014062 (calculated as 0.00140628
and rounded off to 0.0014062)
b1 = 0.000236714 (calculated as 0.000236714
and rounded off to 0.00023671)
b3 = 0.0000001023 (calculated as 0.000000102331
and rounded off to 0.0000001023)
BAPI™ and Alerton™ are the trademarks of their respective
companies.