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Sampling System Solutions
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Steam Engineering
Total Sulfur Analyzer
The Model 6200T Total Sulfur Analyzer utilizes proven UV fluorescent technology to continuously detect sulfur found in inert gas streams. An internal, quartz catalytic converter is employed to convert the sulfur, when mixed with scrubbed ambient air, into SO2 via higher temperature oxidation. An internal vacuum pump is employed to draw both the sample and the ambient air into the converter. The converted sample gas is fed to the fluorescence chamber where it is then exposed to ultraviolet radiation.
Measurement Process
The measurement process in the reaction cell is described by the following equation:
SO + hu1 -> SO2*
SO* -> SO2 + hu2
Where hu1 is the incident UV energy at 214nm and hu2 is the resultant fluorescence, which is directly proportional to the SO2 concentration in the reaction cell. The fluorescence emission is in turn sensed by the photomultiplier tube (PMT) and amplified to provide an analog output. The result is a continuous measurement of total sulfur (i.e. H2S, CS2, COS, mercaptans, etc.) as SO2 from 0-50 ppm to 0-20 ppm.
The Components
The 6200T comes complete with three 19” relay rack modules:
Sample Converter Module: comes with an SO2 scrubber, sample/ambient air filters, high temperature dilution control orifice box and Total Reduced Sulfur (TRS)
Analysis Module: consists of the UV fluorescence analyzer, pressure/flow transducers and vacuum pump.
Calibration Module (optional): consists of restrictor/orifice flow regulations and flow control system, all provided in a temperature controlled setting to ensure accurate performance. The two inlet ports allow use of two independent calibration gases which may be diluted to provide the required span gas concentration. Dilution ratios from 20:1 to 300:1 are manually set from the front panel.
Electronics Platform
The 6200T combines the proven fluorescence principle with state of the art microprocessor technology to provide accurate and dependable measurement of trace levels of total sulfur. Long term stability is obtained by the use of an optical shutter to compensate for zero drift, coupled with lamp reference detector to correct for lamp drift.
The multi-tasking microprocessor allows easy field ranging from 50 ppm to 20 ppm as well as providing on-line indication of instrument status. The 6200T continuously checks operating parameters and provides alarms on out-of-specification conditions, including electrical and optical parameters.
• Ranges of 0-50 ppb to 0-20,000 ppb TS (user-selectable), one or two ranges with auto-ranging capability (lower-ranges available with –U option)
• UV-Fluorescence technology
• High-temperature (1000°C) quartz converter with ceramic thermocouple ensures oxidation of all sulfur compounds
• Reliable Photo-Multiplier Tube (PMT) detector
• In-line particulate filter included
• Large, luminescent touch-screen display with easy-to-view characters
• Available with integral vacuum pump to draw sample or pump-less version
• Menu-driven functionality and numerous parameters detected with microprocessor-based functionality
• Front-panel accessible USB ports for firmware upgrades as standard
• Up to 4 analog outputs, 4-20 mA (isolated) or settable voltage type (0-100 mV, 0-1V, 0-5V, 0-10V)
• Ethernet and 2 x RS-232 digital outputs (optional USB, RS-485 or multidrop RS-232 available)
• 8 x opto-isolated digital outputs and 6 x opto-isolated digital inputs
• Power: 110 VAC or 220 VAC, 50 or 60 Hz (user to specify)
• Fittings, ¼” SS (6mm optional)
• Zero/span valves included as standard
• 19″ Rack mount with ears
Ranges | Min: 0-50 ppb full scale |
Noise | Zero: < 0.2 ppb (RMS) |
Drift | Zero: < 0.5 ppb/24 hours |
Timing | Lag Time: 20 seconds |
Linearity | 1% of full scale |
Precision | 0.5% of reading above 50 ppb |
Flow Rate | 650 cm3/min ± 10% |
Power | 100V-120V, 220V-240V, 50/60 Hz |
Offset | ± 10% |
Temperature | 41° to 104°F (5° to 40°C) |
Dimensions | Analyzer: 7″H x 17″W x 23.5″D (17.8 x 43.2 x 59.7 cm) |
• Air separation Unit
• CO2 purity,
• Food & beverage applications
• Power generation Unit
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