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Mass spec Autosampler

Mass spec Autosampler. Jake Ahrens Stephen Pearson Kyle Sala Seth Yellin. Project Overview. Auto sampler with specified features CO2 flow system In line safety bottle Flushing system Sample mixing/stirring Heat control Interface with mass spectrometer. Design Change and Rationale.

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Mass spec Autosampler

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  1. Mass spec Autosampler Jake Ahrens Stephen Pearson Kyle Sala Seth Yellin

  2. Project Overview • Auto sampler with specified features • CO2 flow system • In line safety bottle • Flushing system • Sample mixing/stirring • Heat control • Interface with mass spectrometer

  3. Design Change and Rationale • Radical change in design, due to refined scope from outside advisor. • Needed to add heat control and stirring mechanism • After further research into part cost, previous designs greatly exceeded budget • New design is simplified, requires slightly more human interaction, but meets the needs of project scope much better

  4. Method of Operation

  5. Solenoid Valve • 2-Way Solenoid Valve • Closed when off • PTFE (Teflon) • Designed for gases

  6. Septa Bottle Tops • Re-sealable septa bottle tops (Teflon) • Needle puncture • Inlet/outlet design • Works in conjunction with valving system

  7. Magnetic Stirring • 10 zones • Heat plate, with temperature control kept at 37 degrees Celsius • Up to 1100 RPM, will be kept at 200 RPM

  8. Engineering Challenges • Software interface • Assembly, due to high tolerance, and sensitive parts • Straight line motion of the enclosure top • Test needle gauge by puncturing septa top and determining if sticky pad will hold bottles • Staying in budget

  9. Questions?

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