KWM Series Interchangeable Wafer Thermistors with Kynar-Insulated Leads EPOXY COAT 28AWG (.0126", 0.32mm diameter) KYNAR-INSULATED LEADS .090 MAX. (2.3mm) 3.5 .25 (89 6.3mm) .25 NOM. (6.3mm) STRIP FEATURES: * TOUGH KYNAR (PVDF) LEAD INSULATION * SILVER-PLATED COPPER CONDUCTOR RESISTS OXIDATION * HIGH ACCURACY * HIGH STABILITY * INTERCHANGEABLE FROM 0 DEG C TO 70 DEG C OPTIONS: * LONGER OR SHORTER LEAD LENGTHS * TERMINATION TYPE * NON-STANDARD TOLERANCES * VALUE ADDED CUSTOM PROBE ASSEMBLIES SPECIFICATIONS: * THERMAL TIME CONSTANT: 10 SECONDS TYP. IN STILL AIR * DISSIPATION CONSTANT: 1.5 mW/C * MAXIMUM OPERATING TEMPERATURE: 125C (INTERCHANGEABILITY MAY DEGRADE IF USED ABOVE 70 DEG. C.) * INTERCHANGEABILITY RANGE: 0 TO 70 DEG. C. Sensor Scientific KWM Series interchangeable wafer thermistors combine a high-accuracy thermistor with a tough insulated lead. The Kynar lead insulation offers many of the advantages of Teflon insulation with a lower cost. Interchangeability eliminates the burden of individual calibration. Units are available in resistance values from 2k ohms to 100k ohms @ 25C. The available resistance vs. temperature curves (SSi curves C, D, E & Y) are industry-standard. If a standard unit does not meet your needs, customized tolerances, resistance values, temperature ranges, and termination options are available. Design assistance is also available. Part Number Resistance @ 25 Deg C ohms 0.2 Deg tolerance 0.5 Deg tolerance 1.0 Deg C tolerance R. vs. Temp. Curve 2000 KWM202C KWN202C KWP202C C 2252 KWM222C KWN222C KWP222C C 3000 KWM302C KWN302C KWP302C C 4000 KWM402C KWN402C KWP402C C 5000 KWM502C KWN502C KWP502C C C 10000 KWM103C KWN103C KWP103C 10000 KWM103Y KWN103Y KWP103Y Y 30000 KWM303D KWN303D KWP303D D 30000 KWM303E KWN303E KWP303E E 50000 KWM503D KWN503D KWP503D D 100000 KWM104D KWN104D KWP104D D -- Dissipation Constant: 1.5 mW/C Typ. in still air -- -- Time Constant: 10 sec. Typ. in still air -- "The information contained herein is believed to be accurate. The user, however, should verify the suitability of a particular procuct for a specific application. Senor Scientific, Inc. does not warrant the accuracy of this information, and disclaims any liability with respect to its use." Call us toll-free at 800-524-1610 (in the US) -- or check us out on the web at www.sensorsci.com Sensor Scientific, Inc. * 6 Kings Bridge Road - Fairfield, New Jersey 07004 * Phone: (973) 227-7790 * Fax: (973) 227-8063 eMail: sales@sensorsci.com * web: www.sensorsci.com Sensor Scientific, Inc. Resistance Multiplier and Alpha Values for KWM Series Interchangeable Wafer Thermistors with Kynar-Insulated Leads Material Curve Available Resistance Range at 25C in ohms Alpha at 25C C 1,000 to 25,000 D 10,000 to 100,000 E 1,000 to 50,000 Y 1,000 to 10,000 4.39% -4.67% -4.30% -4.03% Temp F Temp C Multiplier Alpha Multiplier Alpha Multiplier Alpha Multiplier Alpha -40.0 -40.0 33.61 -6.7 40.64 -6.9 29.48 -6.3 23.98 -5.9 -31.0 -35.0 24.24 -6.4 28.89 -6.7 21.63 -6.1 17.93 -5.7 -22.0 -30.0 17.68 -6.2 20.76 -6.5 16.02 -5.9 13.52 -5.6 -13.0 -25.0 13.03 -6.0 15.08 -6.3 11.98 -5.7 10.29 -5.4 -4.0 -20.0 9.701 -5.8 11.06 -6.1 9.033 -5.6 7.893 -5.2 5.0 -15.0 7.291 -5.6 8.193 -5.9 6.869 -5.4 6.103 -5.1 14.0 -10.0 5.530 -5.4 6.123 -5.7 5.266 -5.2 4.755 -4.9 23.0 -5.0 4.232 -5.3 4.617 -5.6 4.068 -5.1 3.732 -4.8 32.0 0.0 3.265 -5.1 3.510 -5.4 3.166 -4.9 2.949 -4.6 41.0 5.0 2.539 -5.0 2.690 -5.2 2.481 -4.8 2.346 -4.5 50.0 10.0 1.990 -4.8 2.078 -5.1 1.958 -4.7 1.879 -4.4 59.0 15.0 1.571 -4.7 1.617 -4.9 1.556 -4.5 1.514 -4.3 68.0 20.0 1.249 -4.5 1.267 -4.8 1.243 -4.4 1.227 -4.1 77.0 25.0 1.000 -4.4 1.000 -4.7 1.000 -4.3 1.000 -4.0 86.0 30.0 0.8056 -4.3 0.7943 -4.5 0.8089 -4.2 0.8196 -3.9 95.0 35.0 0.6530 -4.1 0.6349 -4.4 0.6580 -4.1 0.6754 -3.8 104.0 40.0 0.5325 -4.0 0.5106 -4.3 0.5382 -4.0 0.5594 -3.7 113.0 45.0 0.4367 -3.9 0.4130 -4.2 0.4425 -3.9 0.4656 -3.6 122.0 50.0 0.3601 -3.8 0.3360 -4.1 0.3656 -3.8 0.3893 -3.5 131.0 55.0 0.2985 -3.7 0.2748 -4.0 0.3036 -3.7 0.3271 -3.4 140.0 60.0 0.2487 -3.6 0.2259 -3.9 0.2533 -3.6 0.2760 -3.4 149.0 65.0 0.2082 -3.5 0.1867 -3.8 0.2122 -3.5 0.2339 -3.3 158.0 70.0 0.1752 -3.4 0.1550 -3.7 0.1786 -3.4 0.1990 -3.2 167.0 75.0 0.1480 -3.3 0.1293 -3.6 0.1510 -3.3 0.1700 -3.1 176.0 80.0 0.1256 -3.2 0.1084 -3.5 0.1281 -3.2 0.1458 -3.0 185.0 85.0 0.1070 -3.2 0.0912 -3.4 0.1092 -3.2 0.1255 -3.0 194.0 90.0 0.0916 -3.1 0.0771 -3.3 0.0934 -3.1 0.1084 -2.9 203.0 95.0 0.0787 -3.0 0.0654 -3.2 0.0801 -3.0 0.0940 -2.8 212.0 100.0 0.0678 -2.9 0.0558 -3.2 0.0690 -2.9 0.0817 -2.8 221.0 105.0 0.0587 -2.9 0.0477 -3.1 0.0597 -2.9 0.0713 -2.7 230.0 110.0 0.0510 -2.8 0.0409 -3.0 0.0517 -2.8 0.0624 -2.6 239.0 115.0 0.0444 -2.7 0.0353 -2.9 0.0450 -2.8 0.0548 -2.6 248.0 120.0 0.0388 -2.7 0.0305 -2.9 0.0393 -2.7 0.0482 -2.5 257.0 125.0 0.0341 -2.6 0.0264 -2.8 0.0344 -2.6 0.0426 -2.5 266.0 130.0 0.0300 -2.5 0.0230 -2.8 0.0302 -2.6 0.0377 -2.4 275.0 135.0 0.0264 -2.5 0.0201 -2.7 0.0266 -2.5 0.0335 -2.4 284.0 140.0 0.0234 -2.4 0.0176 -2.6 0.0235 -2.5 0.0298 -2.3 293.0 145.0 0.0207 -2.4 0.0154 -2.6 0.0208 -2.4 0.0266 -2.3 302.0 150.0 0.0185 -2.3 0.0136 -2.5 0.0184 -2.4 0.0238 -2.2