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Maintenance Training Course. Course Overview. Itemiser 3 Overview Log On and Calibration Menu Options Maintenance Conclusion. Samples are collected with the sample traps and then vaporized by the desorber - PowerPoint PPT Presentation
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Maintenance Training CourseMaintenance Training Course
Course Overview
• Itemiser3 Overview
• Log On and Calibration
• Menu Options
• Maintenance
• Conclusion
• Samples are collected with the sample traps and then vaporized by the desorber
• The vaporized molecules then pass through the semi-permeable membrane and into the detector
• The molecules are ionized so that they can be mobilized through the detector by an electric field
• The length of time it takes a substance to pass through the detector is known as its “time of flight”
• Light ions travel faster than heavier ions
Overview
Detector Schematic
Overview
Desorber
Detector Pump
Sample Pump
Regenerative Dryers
Signal Processing
Dopant
(low energy beta) 63NI
Electrodes
Semi-permeable membrane
Sample Filter
Pre-amplifier
Collector
Display
Why Maintenance is Necessary
• Optimize system performance
• Keeps the sample and detector tubing clear of contamination
• Prevents nuisance alarms
• Minimize down time
• Reduce maintenance and repair costs
Overview
Supervisor default pin number is 5 5 5 5. Maintenance pin number is 9 9 9 9.
Log On and Calibration
Calibration Methods
Log On and Calibration
Log On and Calibration
Select TNT and insert the calibration trap.
Log On and Calibration
Log On and Calibration
• Options
• Substances
• Config/Notes
• History
• Status
• Advanced Menu
• Burn in Membrane
Menu Options
A timed calibration warning may be set in this box.
Menu Options
Substances levels are set at the factory.
Menu Options
Menu Options
Menu Options
Menu Options
Menu Options
Advanced Menu Functions
MaintenanceSaying yes to “Burn in Membrane” results in a four hour period of raised temperature that burns off any contaminants that may have been introduced with the installation of a new membrane.
Shift Maintenance
Calibrate Check printer paper
Clean the unit and work area with alcohol
Weekly Maintenance
Check Sample and Detector flow
@ 200 cc/min
Verify nozzle flowIs approximately 0.2 SCFH
(With unit powered-on)
Weekly Maintenance
Clean desorber unit Inspect sample filter Clean sample air lines
Clean the membrane Inspect dopant Inspect fan filter
(With unit powered-off and wearing gloves)
Monthly Maintenance(With unit powered-off and wearing gloves)
Change the membrane
Conclusion
• Itemiser3 Overview
• Log On and Calibration
• Menu Options
• Maintenance
• Questions?
