49
BEGIN SHUT DOWN
PLEASE WAIT
After shut down, remove all fittings from the Cannonball3.
Press the MODE button to turn the instrument back on and
resume normal operation.
Note: If the MODE button is pressed at any time prior to
completion of the calibration, the calibration procedure
will be cancelled and the instrument will return to normal
operation.
Use of non-standard calibration gas
and/or calibration kit components when calibrating the
Cannonball3 may lead to dangerously inaccurate readings
and may void the standard Sperian Instrumentation
warranty.
4.5.3
Automatic span calibration with more than one
gas source
Depending on the sensor configuration of the Cannonball3, it
will sometimes be necessary to use more than one source of
calibration gas to complete the calibration of the Cannonball3.
If using a calibration balloon, be sure to completely purge the
calibration balloon during cylinder changes and always
continue to flow calibration gas into the calibration balloon until
the calibration is complete.
Note: If multiple cylinders of calibration gas are used
during calibration, it will be necessary to completely purge
the calibration balloon and then completely refill it with
new calibration gas between span adjustments. In this
case the display will indicate the type and concentration of
the next cylinder of calibration gas to be applied.
Apply 10 PPM SO
2
Once the instrument detects the proper gas, the instrument will
proceed to automatically calibrate the appropriate sensor
channel.
SO
2
Sensor Adjusted to 10.0
PPM
(SO
2
Max Possible to 27)
Once all sensors recognized by the instrument have been
successfully span-calibrated, the instrument will display “Auto
Calibration Completed” and proceed to shut itself off.
Remove all fittings from the Cannonball3 before turning
the instrument back on.
Note: It is possible to exit the automatic span calibration
sequence at any time prior to completion by pressing and
holding down the MODE button to turn the instrument off.
The instrument will retain the updated settings for those
sensors whose span adjustments have been successfully
completed. Sensors that were not successfully adjusted
at the time the auto-calibration sequence was terminated
will trigger a “Needs Cal” message at the time the
instrument is next turned on. The accuracy of those
remaining sensors should be verified by exposure to
known concentration test gas before the instrument is put
back into service.
4.6 Manual
calibration
It is possible to calibrate the Cannonball3 manually by using
the navigation arrows to enter the Calibration Menu and select
the desired calibration procedure.
Note: For instruments with dilution capability, proceed to
the Dilution Manual for calibration instructions.
Note: For instruments equipped with the HC/LEL sensor,
proceed to the HC/LEL Manual Addendum to the
Cannonball3 Reference Manual.
4.6.1
Manual fresh air calibration procedure
In some cases, it will be necessary to manually fresh air
calibrate the Cannonball3. Manual fresh air calibrations are
performed as follows:
1. Turn the instrument on and wait at least three minutes to
allow sensor readings to stabilize fully before initiating any
calibration procedures.
Wait at least 3 minutes after turning
the instrument on to allow sensor readings to stabilize
fully before initiating any calibration procedures. Failure
to wait three minutes before initiating calibration
procedures may lead to inaccurate and potentially
dangerous readings.
Note: If a sensor has just been replaced, it must be
allowed to stabilize prior to calibration. See section 6.1.1
for further details concerning sensor stabilization
requirements.
2. Make sure the instrument is located in an area where the
air is known to be fresh.
3. Enter the Main Menu. For instructions on how to enter the
Main Menu, see section 3.1 above.
MAIN MENU
SCREEN
CALIBRATION
VIEW ALARMS
DATALOGGER
OPTIONS
ID INFO
EXIT
4. Use the navigation arrows to select CALIBRATION and
then press the MODE button.
Summary of Contents for Cannonball3
Page 75: ......
