Provides simultaneous readings of H2S and SO2 on a local display

From clean rooms to water treatment plants, where zero stability and ultra low sensitivity are required, the Model 450C-TL is the only choice.Simultaneous readings of H2S and SO2 are provided on a local display and via analog and serial outputs. Minimum detectable concentrations as low as 60 parts per trillion are achieved through the superior optical system in the trace level instrument.

Product Details

The Model 450C Trace level consists of an H2S to SO2 converter coupled to a pulsed fluorescence SO2 analyzer. Continuous H2S monitoring is accomplished by conversion of the H 2 S in the sample to SO2 and its subsequent detection by the SO2 analyzer according to the following reaction:

H2S + 3/2(O2) › SO2+ H2 O

The converter section of the Model 450C-TL catalytically converts each H2S molecule to SO2 so that the output of the SO2 analyzer is equal to the concentration of H2S entering the converter. The electronics subtracts the SO2 result from the total signal of sample passing through the converter and provides an H2S reading.

From clean rooms to water treatment plants, where zero stability and ultra low sensitivity are required, the Model 450C-TL is the only choice. Simultaneous readings of H2S and SO2 are provided on a local display and via analog and serial outputs. Minimum detectable concentrations as low as 60 parts per trillion are achieved through the superior optical system in the trace level instrument

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
• Pulsed excitation
• UV lamp diagnostic
• Electronic test pulse diagnostic
• Maintenance diagnostic
• RS-232 interface


Specifications

Ranges	0-10, 20, 50, 100, 200, 500, and 1000 ppb
Linearity	+1% of full-scale
Zero Noise	1.0 ppb RMS (10 sec. avg. time), 0.5 ppb RMS (60 sec. avg. time), 0.3 ppb (300 sec. avg. time)
Lower Detectable Limit	0.2 ppb (10 sec. avg. time), 0.10 ppb (60 sec. avg. time), 0.06 ppb (300 sec. avg. time)
Zero Drift (24 hour)	less than 0.2 ppb
Span Drift (24 hour)	+/- 1.0% per week
Response Time	approximately 3 minutes to 90%
Precision	1% of reading or 1 ppb
Sample Flow Rate	0.5 LPM standard, 1 LPM (optional)
Interferences	less than LDL except for: (EPA levels) NO ‹ 1 ppb, M-Xylene ‹ 1 ppb and H2O ‹ 3% of reading
Power Requirements	90-100 VAC @ 50/60 Hz, 105-125 VAC @ 50/60Hz, 510-250 VAC @ 50/60Hz
Dimensions	16.75"(W) x 8.62"(H) x 23"(D)
Weight	63 lbs.
Outputs	voltage, current, RS-232/485