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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
74-2958—1110
Appendix E. Sensor Data for Calibration.
Resistance Sensors.
Sensor Type:
C7100A,
(
and C7170A
)
Sensor Use:
Dischar
g
e air, Outdoor air
Table 29 lists the points for Sensor Resistance versus
Temperature. Fi
g
. 52 shows the
g
raph of these points.
Table 29. Sensor Resistance Versus Temperature.
Fig. 52. Graph of Sensor Resistance versus Temperature.
Sensor Type:
C7031B1033, C7031C1031 C7031D1062, C7031F1018
(
W7750B,C onl
y)
, C7031J1050, C7031K1017
Sensor Use:
Return Air, Dischar
g
e Air Temperature
Table 30 lists the points for Sensor Resistance versus
Temperature. Fi
g
. 53 shows the
g
raph of these points.
Table 30. Sensor Resistance Versus Temperature.
Fig. 53. Graph of Sensor Resistance versus Temperature.
Sensor Type:
T7770A,B,C,D the T7560A,B and C7770A
Sensor Use:
Space Temperature and Dischar
g
e/Return Air Temperature
Table 31 lists the points for Sensor Resistance versus
Temperature. Fi
g
. 54 shows the
g
raph of these points.
°FResistance Ohms
-40 2916.08
-30 2964.68
-20 3013.28
-10 3061.88
0 3110.48
10 3159.08
20 3207.68
30 3256.28
40 3304.88
50 3353.48
60 3402.08
70 3450.68
80 3499.28
90 3547.88
100 3596.48
110 3645.08
120 3693.68
3050
3000
2950
2900
3100
3150
3200
3250
3300
3350
3400
3450
3500
3550
3600
3650
3700
3750
50403020100-10-20-30-40 60 70 80 90 100 110 120
OHMS
DEGREES F
SENSOR RESISTANCE VERSUS TEMPERATURE
M11615
°FResistance Ohms
30 1956.79
35 1935.79
40 1914.79
45 1893.79
50 1872.79
55 1851.79
60 1830.79
65 1809.79
70 1788.79
75 1767.79
80 1746.79
85 1725.79
90 1704.78
95 1683.78
100 1662.78
105 1641.78
110 1620.78
115 1599.78
120 1578.78
1650
1600
1550
1500
1700
1750
1800
1850
1900
1950
2000
555045403530 60 65 70 75 80 85 90 95100 105110 115120
OHMS
DEGREES F
SENSOR RESISTANCE VERSUS TEMPERATURE
M11614