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1
Introduction
Itemiser2 Maintenance Course
2
Objectives

• Trace Detection
• ITEMISER2 Overview
• Log-on and Calibration
• Shift Maintenance
• Weekly Maintenance
• Monthly Maintenance
• Questions and Comments

3
Trace Detection

• Traces are microscopic amounts of particles and
  vapor
• Traces are transferred to objects and people
• The Itemiser2 can detect traces to a billionth of
  a gram, or, a grain of salt cut into 1000 pieces

4
Trace Detection
Itemiser2 Sampling Demonstration
5
Trace Detection
Review

• What are explosive traces?
• How are explosive traces transferred?
• How can you describe a billionth of a gram?
• How do you know when the Itemiser2 detects
  explosive traces?

6
Itemiser2 Overview
Sample Trap Holder
Display Screen
Desorber
Printer
7
Itemiser2 Overview
Status Indicator
Software Version
Function Buttons
List of Substances
Select Scan Display Screen
8
Itemiser2 Overview
Plasmagram
Substance List
Plasmagram Display Screen
9
Itemiser2 Overview
Review

• Which Itemiser2 component heats the sampling
  trap?
• Which display screen highlights a detected
  substance in red?
• What do the colors of the status indicator mean?
• Which display screen shows a snapshot of the last
  sample?
• How can you tell which version of software you
  are running?

10
Log-on and Calibration
Log-on Demonstration
11
Log-on and Calibration

• Calibration introduces a known substance into the
  system.
• After the Itemiser2 identifies the substance, the
  software adjusts the positions for all the other
  programmed substances.
• Calibration can be affected by changes in
  temperature, atmospheric pressure, and humidity.

What is Calibration?
12
Log-on and Calibration
Calibration Demonstration
13
Log-on and Calibration
Review

• What are the different log-on numbers and their
  levels?
• Why do you calibrate the Itemiser2?
• Which traps do you use to calibrate the
  Itemiser2?
• The calibration peak is normally found between
  which two numbers?
• How often should you calibrate the Itemiser2?

14
Shift Maintenance

• Calibrate
• Clean Fan Filter
• Check Printer Paper
• Check Supplies
• Decontaminate Work Area
• Record keeping

15
Shift Maintenance
Shift Maintenance Demonstration
16
Weekly Maintenance

• Perform Shift Maintenance
• Power Down Unit
• Clean Desorber
• Inspect Filter
• Clean Sample Air Line
• Clean Membrane
• Calibrate
• Record keeping

17
Weekly Maintenance
Weekly Maintenance Demonstration
18
Monthly Maintenance

• Power Down Unit
• Perform Weekly Maintenance
• Change Dryer
• Inspect Dopant
• Change Membrane
• Calibrate
• Record keeping

19
Monthly Maintenance
Monthly Maintenance Demonstration
20
Course Review

• Trace Detection
• ITEMISER2 Overview
• Log-on and Calibration
• Shift Maintenance
• Weekly Maintenance
• Monthly Maintenance
• Questions and Comments

21
Detector Schematic