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EXCEL 10 W7761A INPUT/OUTPUT DEVICE
78 74-2699
Sensor Type:
T7242 or equivalent.
Sensor Use:
CO
2
concentration.
Table E-9 lists the points for Sensor Voltage versus CO
2
concentration. Fig. E-9 shows the graph of these points.
Table E-9. Sensor Voltage Versus CO
2
Concentration.
CO
2
Concentration PPM Sensor Voltage
00.00
100 0.50
200 1.00
300 1.50
400 2.00
500 2.50
600 3.00
700 3.50
800 4.00
900 4.50
1000 5.00
1100 5.50
1200 6.00
1300 6.50
1400 7.00
1500 7.50
1600 8.00
1700 8.50
1800 9.00
1900 9.50
2000 10.00
0
1
2
3
4
5
6
7
8
9
10
100 300 500 700 900 1100 1300 1500 1700 1900
200 400 600 800 1000 1200 1400 1600 1800 2000
VOLTS
PPM
SENSOR VOLTAGE VERSUS CO2 CONCENTRATION
M11611
Fig. E-9. Graph of Sensor Voltage versus CO
2
concentration.
Sensor Type:
Third party (2 to 20V).
Sensor Use:
Monitor voltage.
Table E-10 lists the points for Sensor Voltage versus input Voltage to A/D. Fig. E-10 shows the graph of these points.
Table E-10. Sensor Voltage Versus Input Voltage To A/D.