69-089514

C7189A WALL MOUNT TEMPERATURE SENSOR

Home and Building Control

Honeywell Limited-Honeywell Limitée

740 Ellesmere Road

Scarborough, Ontario

M1P 2V9 QUALITY IS KEY

Helping You Control Your World

69-08951 J.H. Rev. 5-95 Printed in Mexico

CHECKOUT

Allow the C7189 Wall Mount Temperature Sensor to soak

in the air moving through the room for a minimum of five

minutes before taking a resistance measurement.

With an accurate thermometer (±1°F [0.5°C]), measure the

temperature at the sensor location, allowing time for the

thermometer to stabilize before reading. Remove one wire

from one of the C7189 wiring terminals. Use an ohmmeter

to measure the resistance across the sensor. Then verify

sensor accuracy with the temperature/resistance curve of

Fig. 3.

CALIBRATION

The C7189 Remote Sensor is calibrated at the factory and

cannot be recalibrated in the field.

Home and Building Control

Honeywell Inc.

1985 Douglas Drive

Golden Valley, MN 55422

Fig. 3. C7189 Sensor Resistance vs. Temperature Performance Characteristics.

OHM RESISTANCE
°F
(°C )
M6357
RESISTANCE DECREASES 18.6 OHMS PER 1°F
CHANGE OR 33.4 OHMS PER 1°C CHANGE.
1
1
2000
2100
1900
1500
1600
1700
1800
1400
TEMPERATURE
40
(4)
50
(10)
60
(16)
70
(21)
80
(27)
90
(32)
100
(38)
1300
1000
1200
2200
2300
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
7.8
8.9
10.0
11.1
12.2
13.3
14.4
15.6
16.7
17.8
18.9
20.0
21.1
22.2
23.3
24.4
25.6
26.7
27.8
28.9
30.0
31.1
32.2
33.3
34.4
35.6
36.7
37.8
2131 to 2094
2094 to 2057
2057 to 2019
2019 to 1982
1982 to 1945
1945 to 1908
1908 to 1871
1871 to 1833
1833 to 1796
1796 to 1759
1759 to 1722
1722 to 1685
1685 to 1647
1647 to 1610
1610 to 1573
1573 to 1536
1536 to 1499
1499 to 1461
1461 to 1424
1424 to 1387
1387 to 1350
1350 to 1313
1313 to 1275
1275 to 1238
1238 to 1201
1201 to 1164
1164 to 1127
1127 to 1089
ROOM TEMPERATURE OHMS OF
RESISTANCE
°F °C