Copyright ©1998-2004:
AMKO Systems Inc.
All rights reserved.
4108 U.V. Fluorescence SO2/H2S Analyzer
Configurations:
Model 4108
This is the basic configuration containing internal zero/span valves for manually or remotely activated verification checks, on-board zero air source for "self-zero" checks, and a particulate removal system with 5 micron Teflon filter pad.
Model 4108 w/PERM
Added to the basic configuration described above is an internal SO2 permeating subsystem that allows "self-span" checks. The span level created will be approximately 400 ppb, unless otherwise specified.
Model 4108 w/H2S
This combination of units consists of the basic SO2 monitor (Model 4108) configured to be used in conjunction with the Dasibi Model 4109 H2S to SO2 thermal oxidizer (a further description is provided below). This allows the 4108 unit to measure SO2, H2S and SOX.
Model 4108 w/P&H2S
This combination of units consists of the Model 4108 w/PERM configured to be used with the Dasibi Model 4109 H2S to SO2 thermal oxidizer. This allows the 4108 w/PERM unit to measure SO2, H2S and SOX and create a self-span check of SO2 (around 400 ppb, unless otherwise specified).
Series 4109 H2S to SO2 Convertors
The Dasibi Models 4109 and 4109A Hydrogen Sulfide Convertors are designed to be used in conjunction with an SO2 analyzer to oxidize TRS compounds (i.e. H2S, MESH, DMS and DMDS) to SO2 without affecting the concentration of SO2 in the air stream. The purpose is to allow an SO2 analyzer (such as the Model 4108) to provide a continuous stream of high quality, non-ambiguous, Hydrogen Sulfide concentration data.
Advantages:
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US EPA Equivalency Designated EQSA-1086-061 (Models 4108 & 4108 w/PERM only) |
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State-of-the-art non-pulsed ultraviolet fluorescence technique specific to SO2 |
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First EPA-approved SO2 analyzer containing internal microcomputer |
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Virtually non-existant zero and span drift through use of Dynamic Zero Stabilization technique invented by Dasibi |
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Automatic temperature and pressure correction |
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Alphanumeric display |
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Internal diagnostic messages available via display and optionally via RS 232 or isolated current/voltage outputs |
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Common electronics with Dasibi Model 2108 NOX Analyzer, Model 3008 CO Analyzer, Model 1108 Ozone Analyzer and Model 5009-CP Multi-Gas Calibrator |
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No quenching from water vapour |
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Built-in hydrocarbon scrubber |
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Standard dual analog outputs (voltage range selectable) |
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Standard inlet particulate removal system |
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Optional internal zero/span check solenoid valves, microcomputer-controlled, with manual or remote activation |
Technical Specifications
| Standard Range: | 0-2000 ppb |
| Standard Outputs: | 0-1 ppm = 0-1 Volt |
| EPA Approved Ranges: | 0-100 ppb, 0-200ppb, 0-550 ppb, 0-1000 ppb |
| Other Ranges: | 0-10, 20, 25, 40 and 50 ppm |
| Other "H2S" Ranges: | 0-5 and 10 ppm |
| Analog Output 1: | Adjustable 0-10 VFS |
| Analog Output 2: | Adjustable 0-10 VFS |
| Noise (Zero):* | Less than 0.5 ppb (Fast Response Time) |
| Less than 0.3 ppb (Slow Response Time) | |
| Lower Detectable Limit: | Less than 1 ppb (Fast Response Time) |
| Less than 0.6 ppb (Slow Response Time) | |
| Zero Drift:* | |
With Autozero: |
0 |
Without Autozero: |
Less than 1 ppb/24 hours |
| Span Drift:* | Less than ± 0.5% per week |
| Lag Time: | 8 seconds |
| Rise Time (0-95%):* | 90 seconds (Fast Response Time) |
| 120 seconds (Slow Response Time) | |
| Fall Time (0-95%):* | 90 seconds (Fast Response Time) |
| 120 seconds (Slow Response Time) | |
| Total
Interference Equivalent: (EPA Levels) |
Less than 9 ppb |
| Precision: | 1% of reading or 1 ppb |
| Linearity: | 1% of range |
| Temperature Range: | 20-30°C (EPA Approved) |
| 10-40°C | |
| Flow Rate: | 0.5 l/min |
| Power: | 105-125 VAC, 50-60 Hz |
| 220-240 VAC, 50-60 Hz |
Permeation Oven Subsystem Performance Specifications for Models 4108 w/PERM & 4108 w/P&H2S
| Standard Output: | 420-480 ppm |
| Stability: | ± 0.002 ppm |
| Repeatability: | ± 1% |
Series 4109 H2S to SO2 Convertor Specifications
| Flow Rate: | 0.5 l/min |
| Efficiency: | 96-100% (100-2000 ppb) |
| Operating Temperature: | 700°C (approx.) |
| Power: | 105-125 VAC, 50/60 Hz |
| 220-240 VAC, 50/60 Hz |