Section 12 - Sensors for Economizer Modules
63-8594-02 Honeywell Economizers 162
C7150 and C7046 Mixed and Supply Air Sensors
This chart is for the C7046A or C7150B supply
or mixed air sensors designed to be used with
all of the economizer logic modules. These
sensors have negative temperature
coefficients, as the ambient temperature at the
sensor increases, the resistance of the sensor
decreases. It changes 70 ohms in resistance
for every 1°F (0.6°C) change in temperature.
C7046A 3,000 OHM MIXED AIR OR
SUPPLY AIR SENSOR
C7150B 3,000 OHM MIXED AIR
OR SUPPLY AIR SENSOR
60 65
70
75
80
85 90 95
100
OHMS
3000 OHMS at 77
DEG. F
(25 C)
DEG. F
5000
4800
4600
3800
4000
4200
4400
3400
3200
2600
2800
3000
2400
3600
2200
1400
1600
1800
2000
5400
5200
5600
6000
5800
6200
50 55
16 18 10 13
DEG. C
M25285
21
24 27
29 32 35
38
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