F&J - Model MRB500C14E - Carbon Bubbler Collection System
From Air Samplers - Tritium and Carbon 14 Collection Systems
Sample gas enters the instrument and flows through two (2) standard scintillation counter ready vials filled with ethanolamine, which retain the CO2 component. The sample gas, now less the inorganic CO2, flows through a heated palladium sponge catalyst bed, which oxidizes the sample gas. The oxidized sample gas flows through two (2) more vials with ethanolamine that retain the remaining organic carbon components (originally gaseous organic species). A precision mass flow controller regulates the sample flow through the instrument. The user has control over the flow rate and catalyst bed temperature. The third vial in each bubbler train serves the function of a trap for any carry-over of absorbent.
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Specifications
- Dimensions: W × H × D
- Inches: 16.88 × 10.5 × 16.7
- Cm: 42.88 × 26.67 × 42.42
- Line power: 200V/50 Hz
- Weight: 35 lbs. (16 kg)
- Collection efficiency: >99% when catalyst bed temperature is set to specified level.
- Catalyst bed: Custom bed containing quality inspected palladium sponge of 4 to 10 mesh surrounded by front panel adjustable furnace (0 to 600ºC). Over/under temperature alarm and temperature overrun protection included.
- Flow control: Electronic mass flow controller (20-200 scc/min) with flow display and adjustment located on front panel. Pressure and flow alarm indications warn of out-of-spec operation.
- System protection: In-line filter to protect flow controller and pump; Check-valve and venting mechanism to protect against ethanolamine back-flow; Vacuum gauge to monitor pump performance; Pressure gauge to monitor system performance; Audible and dry contact fault alarm.
- Operating parameters: 5 to 40ºC and 0 to 95% rh non-condensing
- Sensitivity: Detection limit of ambient air is at least 1E-10 μCi/cc
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