Honeywell C7189U Owner's Manual - Page 4

C7189U REMOTE INDOOR SENSOR CHECKOUT For best results, allow the sensor to absorb the air moving through the room for a minimum of twenty minutes before taking a resistance measurement. 1. Use an accurate thermometer (+/-1ºF[0.5ºC]) measure the temperature at the sensor location. 2. Remove one wire from one of the sensor's wiring terminals. Use an ohmmeter to measure the resistance across the sensor. Verify the sensor accuracy with the temperature/resistance in Table 1. CALIBRATION The sensor is calibrated at the factory and cannot be recalibrated in the field. Table 1. Sensor Resistance at Room Temperature. Room Temperature °F °C 40 4.4 42 5.6 44 6.7 46 7.8 48 8.9 50 10.0 52 11.1 54 12.2 56 13.3 58 14.4 60 15.6 62 16.7 64 17.8 66 18.9 68 20.0 70 21.1 72 22.2 74 23.3 76 24.4 78 25.6 80 26.7 82 27.8 84 28.9 86 30.0 88 31.1 90 32.2 92 33.3 94 34.4 96 35.6 98 36.7 100 37.8 Ohms of Resistance 22537 21516 20546 19626 18754 17926 17136 16387 15675 14999 14356 13743 13161 12607 12081 11578 11100 10644 10210 9795 9398 9020 8659 8315 7986 7672 7372 7086 6813 6551 6301 Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 http://yourhome.honeywell.com ® U.S. Registered Trademark © 2005 Honeywell International Inc. Patents Pending. 69-1710EFS-1 M.S. Rev. 10-05