GasTech Cannonball 3, Dilution Manual

Page: 16 / 20

15
Make sure the
calibration balloon is filled with the
appropriate calibration gas before
attempting to calibrate the Cannonball
3. Use of improper calibration gas or
failure to nearly fill the calibration
balloon may lead to inaccurate and
potentially dangerous readings.
6. When the readings stabilize, use the
up and down navigation arrows to
raise or lower the readings to match
the concentration printed on the
calibration cylinder label.
SPAN CALIBRATION
LEL 0
CO 0
H
2
S 0
SO
2
10.0
EXIT
7. When the span calibration for a
particular sensor is completed, press
the MODE button to confirm the
calibration. If span calibration of
additional sensors is required, use
the navigation arrows to advance to
the next sensor channel and repeat
steps 4,5 and 6 above.
If using a calibration
balloon and calibration of more than
one sensor is required, deflate the
calibration balloon fully before filling
it with new gas for subsequent
calibrations. Failure to fully deflate
the calibration balloon between
calibrations may lead to inaccurate
and potentially dangerous readings.
SPAN CALIBRATION
LEL 0
CO 0
H
2
S 0
SO
2
10.0
EXIT
8. When all sensors requiring
calibration have been successfully
calibrated, use the navigation
arrows to highlight EXIT and press
the MODE button to exit and save
the new calibration settings.
SAVE CHANGES
YES NO Cancel
9. Press the MODE button with yes
highlighted to save changes.
Remove all fittings before turning the
instrument back on and returning to
normal operation.
3.3.4 Dilution fresh air calibration
The dilution fresh air calibration performs
a fresh air calibration with the dilution
pump enabled.
To perform a dilution fresh air calibration:
1. Enter the Calibration Menu.
CALIBRATION MENU
GAS VALUES SPAN CAL
HISTORY O
2
ZERO CAL
DIL. SPAN FRESH AIR
DIL. FRESH REMINDER
EXIT
2. Use the navigation arrows to highlight
DIL. FRESH as shown above and
press the MODE button.
Do Dilution Fresh Air Cal Now?
YES NO
3. Press the MODE button with YES
highlighted to confirm the selection.
The instrument will then show the
following screen.