RKI Instruments Digester Gas Monitor - Manual (Page 40)

34 • Starting Up the Digester Gas Monitor Digester Gas Monitor Operator’s Manual
1. Use the regulator in the bottom left corner of the Digester Gas Monitor to adjust the
Flow to Sensors flowmeter in the upper right corner to 3.0 SCFH.
2. Use the flowmeter knobs on the H
2
S Dilution Sample flowmeter in the left center of the
Digester Gas Monitor and the H
2
S Dilution Air flowmeter in the right center of the
Digester Gas Monitor to set the flowmeters to the appropriate value for the detection
range as outlined in Table 5 (see Figure 3 on page 9 for the locations of the
flowmeters).
Table 5: Flow Rates for Different H
2
S Ranges
H
2
S Range
Flow to Sensors
Flowmeter
H2S Dilution
Sample Flowmeter
H2S Dilution Air
Flowmeter
0 - 1000 ppm 3.0 SCFH 0.3 SCFH 1.0 SCFH
0 - 3000 ppm 3.0 SCFH 0.25 SCFH 1.2 SCFH
0 - 5000 ppm 3.0 SCFH 0.2 SCFH 1.4 SCFH