Pneumatically Modulated Liquid Delivery System for Nebulizers

Abstract

A liquid delivery system for nebulizers typically used in inductively coupled plasma spectrometry is implemented with active, closed-loop feedback to generate a constant, stable flow rate over extended periods of time. An electronic pressure control unit is coupled with a pressure vessel and flow meter in three separate configurations. The first configuration uses a computer to monitor the flow rate and adjust the pressure based on a PID algorithm. The second configuration uses an embedded microcontroller in a separate control box, and the third configuration places all the components in a single box. Flow rates with less than 0.5% relative standard deviation are possible, and results are compared with a syringe pump and capillary-high pressure liquid chromatography pump.

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Document Details

Document Type
Technical Report
Publication Date
Dec 02, 2011
Accession Number
ADA553750

Entities

People

  • Adam Lubrano
  • Alex Terray
  • Christopher R. Field
  • Duane A. Rogers
  • Sean J. Hart
  • Susan L. Rose-Pehrsson

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Circuit Boards
  • Circuits
  • Computer Programs
  • Diagrams
  • Electronics
  • Flow
  • Flow Rate
  • High Pressure
  • Hypervelocity Flow
  • Liquid Chromatography
  • Microcontrollers
  • Military Research
  • Power Supplies
  • Pressure Vessels
  • Printed Circuits
  • Voltage Regulators

Fields of Study

  • Physics

Readers

  • Analytical Chemistry
  • Combustion and Flow Dynamics.
  • Robotics and Automation.

Technology Areas

  • Microelectronics