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PRODUCT DESCRIPTION
The Thermo Scientifics range of iSeries gas analysers have by far and away the least requirement for maintenance of any gas analysers on the market today and are built for reliable continuous duty field gas detection.
A specialty product in Thermo Fisher Scientific iSeries product line is the Model 450i H2S – SO2 analyser. Using pulsed fluorescence technology the Model 450i operates on the principle that H2S can be converted to SO2. SO2 molecules absorb ultraviolet (UV) light and become excited at one wavelength, then decay to a lower energy state emitting UV light at a different wavelength.
Ethernet connectivity provides efficient remote access, allowing the user to download measurement information directly from the instrument without having to be on-site. You can easily program soft-keys to allow you to jump directly to frequently accessed functions, menus or screens and the larger interface screen can display up to five lines of measurement information while the primary screen remains visible.
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PRODUCT SPECIFICATIONS
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Preset Ranges
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0-0.05, 0.1, 0.2, 0.5, 1, 2, 5, and 10 ppm
0-0.2, 0.5, 1, 2, 5, 10, 20, and 25 mg/m3
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Extended Ranges
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0-0.5, 1, 2, 5, 10, 20, 50 and 100 ppm
0-2, 5, 10, 20, 50, 100, 200, and 250 mg/m3
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Custom Ranges
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0-0.05 to 100 ppm
0-0.2 to 250 mg/m3
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Zero Noise
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1.0 ppb Manual H2S or CS 3.0ppb Auto (10 second averaging time)
0.5 ppb 1.5 ppb (60 second averaging time)
0.25 ppb 0.75 ppb (300 second averaging time)
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Lower Detectable Limit
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2.0 ppb Manual H2S or CS 6.0 ppb Auto (10 second averaging time)
1.0 ppb 3.0 ppb (60 second averaging time)
0.5 ppb 1.5 ppb (300 second averaging time)
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Zero Drift (24 hour)
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Less than 1 ppb
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Span Drift (24 hour)
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+/-1% Full Scale
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Response Time
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80 seconds (10 second average time)
110 seconds (60 second average time)
320 seconds (300 second average time)
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Precision
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1% of reading or 1 ppb (whichever is greater)
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Linearity
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+/-1% full scale
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Sample Flow Rate
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1.0 liter/min.
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Converter Efficiency
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> 80% H2S to SO2. Note: Various other Sulfur compounds can be converted at varying %
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Operating Temperature
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200C - 300C
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Power Requirements
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100 vac, 115 vac, 220-240 vac +/-10% @ 300W
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Size and Weight
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16.75"(W) x 8.62"(H) x 23"(D), 48 lbs. (21.8 kg)
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Outputs
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Selectable Voltage, RS232/RS485, TCP/IP, 10 Status Relays, and Power Fail Indication (standard). 0-20 or 4-20 mA Isolated Current Outout (optional)
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Inputs
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16 Digital Inputs (standard), 8 0-10vdc Analog Inputs (optional)
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Available Options
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Teflon particulate filter, Rack mounts, Rear extenders
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