6
HIGH SENSITIVITY MODE
To pinpoint the leak or find a very small leak:
9. Set the instrument to HIGH sensitivity using the slide switch, when
switching from LOW to HIGH sensitivity the top red LED will flash
once.
10. Operation is as in low sensitivity mode but is more sensitive to small
changes in concentration.
11. Move the tip to levels of higher concentration indicated by an
increase in tick rate and more lights on the LED array. If the LED
array displays continuously flashing red, turn the switch to Low
Sensitivity and continue.
RESETTING ZERO
12. In fresh air the green LED should settle to a 2 second flash rate
accompanied by a blip sound.
13. To reset zero in fresh air, turn off the unit for about 2 seconds then
turn on in either LOW or HIGH sensitivity mode.
