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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

Mass spec Autosampler

Jake Ahrens

Stephen Pearson

Kyle Sala

Seth Yellin

project overview
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
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
solenoid valve
Solenoid Valve
  • 2-Way Solenoid Valve
  • Closed when off
  • PTFE (Teflon)
  • Designed for gases
septa bottle tops
Septa Bottle Tops
  • Re-sealable septa bottle tops (Teflon)
  • Needle puncture
  • Inlet/outlet design
  • Works in conjunction with valving system
magnetic stirring
Magnetic Stirring
  • 10 zones
  • Heat plate, with temperature control kept at 37 degrees Celsius
  • Up to 1100 RPM, will be kept at 200 RPM
engineering challenges
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