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BALCO Tracking Chart TCR Characteristic in ppm/°F.

°Fohmsppm/°Fchg. °Fohmsppm/°Fchg.
32918.53 33920.6021212.154
34922.7121222.155 35924.7921242.157
36926.8621262.159 37928.9821272.160
38931.0721292.162 39933.1921302.163
40935.2821312.165 41937.4121322.166
42939.5121342.168 43941.6521352.169
44943.7521372.171 45945.8921382.172
46948.0021402.173 47950.1221422.175
48952.2721432.176 49954.3921452.178
50956.5421462.179 51958.6721482.181
52960.8021502.183 53962.9621512.184
54965.1021522.186 55967.2621532.187
56969.4321542.188 57971.5821562.190
58973.7321582.192 59975.8921602.194
60978.0621612.195 61980.2321632.197
62982.4121642.198 63984.5821662.200
64986.7721672.201 65988.9521692.203
66991.1421702.204 67993.3221732.206
68995.5121732.207 69997.7121742.208
701000.0021742.207 711002.1121782.212
721004.3121792.213 731006.5121822.216
741008.7321832.217 751010.9421852.219
761013.1621872.220 771015.3821882.222
781017.6021892.223 791019.8321922.226
801022.0521912.225 811024.2821922.226
821026.5221942.228 831028.7521952.229
841031.0121982.232 851033.2421982.232
861035.5022012.236 871037.7422012.235
881039.9822022.237 891042.2422042.239
901044.4922052.240 911046.7722082.242
921049.0222082.242 931051.2722092.243
941053.5722122.246 951055.8522142.248
961058.1122152.249 971060.3822162.250
981062.6922182.253 991064.9722192.254
1001067.2422202.255 2121342.7223882.420

TEMPERATURE COEFFICIENT OF RESISTANCE (TCR)

• The TCR equals the change in resistance times 1,000,000 (106) divided by the original resistance (Ro) times the change in temperature.

• The TCR Char. is calculated between 25°C. and 100°C., always using +25°C.(77°F.) as the base temperature in the equation:

TCR/°F. = R212°F. - R77°F. / R77°F. x 135 x 106
= 1342.72 - 1015.38 / 1015.38 x 135 x 106
= 2388 ppm/°F. TCR/°C. = R100°C. - R25°C. / R25°C. x 75 x 106
= 1342.72 - 1015.38 / 1015.38 x 75 x 106
= 4298 ppm/°C.