TIGER XT Instrument User Manual V1.2
Pioneering Gas Sensing Technology. Page 58 of 71 ionscience.com
Lamp Cleaning and Electrode Stack Replacement
The TIGER XT is a sensitive detector. Internal components must be handled with
clean hands and clean tools. The Lamp is fragile. Handle with great care. Never
touch the window and do not drop.
When to Clean or Replace the Lamp
The TIGER XT MiniPID uses an ultraviolet light source ionising VOC gases as they pass across the
Lamp window. This process may result in a fine layer of contamination on the detector window that
must be removed on a regular basis.
• In normal use the Lamp should be cleaned after every 100 hours (based on 30 ppm for 100
hours). If the Tiger is used in heavily gas contaminated environments, the Lamp should be
cleaned more often.
• Please note that some esters, amines and halogenated compounds may accelerate window
fouling; in these cases cleaning may be required after every 20 hours of use.
• Cleaning frequency will also depend upon alarm levels set and prevailing environmental
conditions.
• Damaged Lamps must be replaced immediately. Do not use a Tiger XT with a damaged
Lamp.
When to Replace the Electrode Stack
When using your Tiger XT in conditions of high ambient humidity, it may show unexpected and
increasing readings. This is due to dust or other small particles within the detector becoming
hydrated which causes these particles to conduct a signal between the electrodes.
The problem can be resolved by replacing the Electrode Stack.
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