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
0
0.00
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.