Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 17)

Laser Gas Analyzer Introduction
Teledyne Analytical Instruments 3
Suffix S: Bypass sampling mode
For example, the Model 3500C would indicate a standard (non-
explosion proof) single gas analyzer without an optical fiber capable of
in-situ analysis in non-hazardous environments. Similarly, the Model
3500F would indicate the same instrument but with an optical fiber
connection with the laser source located remotely from the monitoring
site.
1.2 Typical Applications
The Model 3500 Laser Gas Analysis System is a versatile tool for
online analysis and monitoring of a gas flow process. The Model 3500 is
suitable for a wide range of industrial applications including
petrochemical and steel industries where critical monitoring of process
gases is vital. Depending on the gas specie or species of interest, the
instrument is capable of measuring from the parts per million (ppm) to
100% range of concentration.
Table 1-1 shows typical gas species and their measurement range
for the Model 3500.
Table 1-2: Typical Gas Analysis and Range
Gases Threshold
Measurement
Range
O
2
0.01%Vol. 0-2% Vol.,
0-100% Vol.
HCL 0.1 ppm 0-15 ppm,
0-8000 ppm
HF 0.02 ppm 0-5 ppm,
0-1000 ppm
NH
3
0.2 ppm 0-20 ppm,
0-10000 ppm
CO 200 ppm 0-8000 ppm,
0-100% Vol.
H
2
O 0.05 ppm 0-10 ppm, 0-
70% Vol.
H
2
S 5 ppm 0-1000 ppm,
0-30% Vol.