095 Replacement Kit for Snow Sensor User Manual

© 2013 M3065_D - 06/13
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Temperature vs. Resistance Table
Temperature Resistance
°F °C
-50 -46 490,813
-45 -43 405,710
-40 -40 336,606
-35 -37 280,279
-30 -34 234,196
-25 -32 196,358
-20 -29 165,180
-15 -26 139,402
-10 -23 118,018
-5 -21 100,221
0 -18 85,362
5 -15 72,918
10 -12 62,465
15 -9 53,658
20 -7 46,218
25 -4 39,913
30 -1 34,558
35 2 29,996
40 4 26,099
Temperature Resistance
°F °C
45 7 22,763
50 10 19,900
55 13 17,436
60 16 15,311
65 18 13,474
70 21 11,883
75 24 10,501
80 27 9,299
85 29 8,250
90 32 7,334
95 35 6,532
100 38 5,828
105 41 5,210
110 43 4,665
115 46 4,18 4
120 49 3,760
125 52 3,383
130 54 3,050
135 57 2,754
Temperature Resistance
°F °C
140 60 2,490
145 63 2,255
150 66 2,045
155 68 1,857
160 71 1,689
165 74 1,538
170 77 1,403
175 79 1,281
180 82 1,172
185 85 1,073
190 88 983
195 91 903
200 93 829
205 96 763
210 99 703
215 102 648
220 104 598
225 107 553
If the Snow Melt Control shows an error message describing a sensor failure, perform the
following test procedure:
The 4 conductor wires at the sensor should be disconnected.
Use a good quality electrical testing meter with an ohm scale range of 0 to 2,000,000
Ohms.
Using the ohmmeter and standard testing practices, measure the resistance between:
1. The yellow (YEL) and black (BLK) wiring terminals to measure a 10 kΩ sensor and use
the Temperature vs. Resistance Table to calculate the approximate temperature reading.
Measure the surface temperature of the 095 blue sensor disk and compare versus the
yellow to black temperature reading.
2. Measure the resistance between the blue (BLU) and black (BLK) wiring terminals. When
the sensor surface is clean and dry, the reading should be 2,000,000 Ohms. When the
sensor surface is wet it should be between 10,000 and 300,000 Ohms.
3. Measure the resistance between the red (RED) and black (BLK) wiring terminals This
reading should be between 45 to 47 Ohms.
If resistance readings are outside of the normal operating range, the sensor has failed.
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Testing and Troubleshooting