A pulsed fluroescent analyzer for Hydrogen Sulfide

The Model 45C consists of an H2S - to - SO2 converter coupled to a pulsed fluorescence SO2 analyzer. Continuous H2S monitoring is accomplished by conversion of the H2S in the sample to SO2 and its subsequent detection by the SO2 analyzer

Product Details

CONVERTER MODULE NOT DEPICTED
The Model 45C consists of an H2S - to - SO2 converter coupled to a pulsed fluorescence SO2 analyzer. Continuous H2S monitoring is accomplished by conversion of the H2S in the sample to SO2 and its subsequent detection by the SO2 analyzer according to the following reation:

H2S + 3/2(O2) => SO2 + H2O

The converter section of the Model 45C cataytically converts each H2S molecule to SO2 so that the ouput of the SO2 analyzer is equal to the concentration of H2S entering the converter. Any SO2 present in the original sample is scrubbed prior to its entrace into the converter, providing an instrument response to H2S.

Key Features

• Field programmable ranges
• Long life - stable UV source nominal life over two years
• MTBF = two years (except for pump)
• Temperature stabilized reaction chamber
• Excitation intensity stabilization
• Low Volume reaction chamber
• Modular electronic design
• No sample dryer
• Pulsed excitation
• Low noise
• UV lamp diagnostic
• Electronic test pulse diagnostic
• Maintenance diagnostic
• RS-232 interface
• Remote actuation of zero/span solenoid valves (optional)


Specifications

Ranges	0-1, 2, 5, 10, 20*, 50*, and 100* ppm (*applicable to SO2 analysis only)
Linearity	+/- 1% of full scale
Zero Noise	1.0 ppb RMS (10 sec avg time); 0.5 ppb RMS (60 sec avg time); 0.25 ppb RMS (300 sec avg time)
Lower Detectable Limit (LDL)	2.0 ppb (10 sec avg time); 1.0 ppb ( 60 sec avg time); 0.5 ppb (300 sec avg time)
Zero Drift (24 hour)	less than 1 ppb
Span Drift	+/- 0.5% per week
Response Time	approx 3 min to 90% (10 sec avg time)
Precision	1% of reading or 1 ppb
Sample Flow Rate	00.5 LPM Standard, 1 LPM optional
Interferences (EPA levels)	less than LDL except for the following: NO<1 ppb, M-Xylene< 1 ppb, and H2O<3% of reading
Power	90-110, 105-125, 210-250 VAC, 100 watts
Analyzer Dimensions	16.75" (W) x 8.62" (H) x 23" (D)
Converter Dimensions	19" (W) x 12.2" (H) x 15.5" (D)
Combined Weight (Analyzer & Converter)	63 lbs total
Outputs	voltage, current, RS-232/485