Model IR5500
6
2.1.4 Typical
System
Gas Cloud Measurements
Example readings of methane gas clouds by the standard Model IR5500 are:
Size of Gas Cloud
IR5500 Display
(ppm•m)
50 ppm x 2 meters
100
25 ppm x 4 meters
100
10 ppm x 10 meters
100
100 ppm x 5 meters
500
50 ppm x 10 meters
500
500 ppm x 5 meters
2500
100 ppm x 25 meters
2500
5% LEL x 1 meter
2500
1% LEL x 5 meters
2500
.5% LEL x 10 meters
2500
Table 1: Readings of Methane Gas Clouds 0-5000 ppm•m Range
Size of Gas Cloud
IR5500 Display
(LEL•m)
20% LEL x 1 meter
0.2
10% LEL x 2 meters
0.2
100% LEL x 2½ meters
2.5
50% LEL x 5 meters
2.5
100% LEL x 1 meter
1.0
50% LEL x 2 meters
1.0
25% LEL x 4 meters
1.0
10% LEL x 10 meters
1.0
Table 2: Readings of Methane Gas Clouds 0-5 LEL•m Range
2.1.5 Control
Electronics
Both the Model IR5500 Source and Receiver units operate from a 24 VDC input. This
unregulated 24 VDC is fed to on-board power supplies that produce all necessary voltages
for the Model IR5500 Source and Receiver.
