• The Ultima display should show "SET APPLY ZERO GAS"
• The Ultima X Series display should show "APPLY ZERO GAS"
• The remainder of the procedure is now the same as that for a
regular calibration.
• The presence of the words "SET" (on Ultima units only) and
"ICAL" (on both Ultima and Ultima X Series units) on the display
distinguish INITIAL Calibration from a regular calibration. If the
word "ICAL" does not appear, the user may abort the calibration
by pressing any button on the Calibrator while aiming at the unit;
then, retry the above procedure.
NOTE: The calibration process can be aborted at any time during
the 30-second countdown simply by pressing the ZERO,
CAL or ADDRESS button on the Controller/Calibrator while
aiming at the unit.
• The display leads the user through the zero and span routines as
in a regular calibration.
NOTE: This procedure should be initiated only when a new sensor
element is installed. Otherwise, the sensor end-of-life indication
may not be accurate.
Regular Calibration
A regular calibration includes a "zero" and "span" as described in the
following procedures. If the user chooses to only perform a "zero", they
may do so by pressing the ZERO button instead of the CALIBRATE or
CAL button as described in step 3.
• For oxygen units, skip to Step 3.
Zeroing
1. Using the Zero Cap:
If the ambient air is suitable, with no traces of the gas of interest,
place the appropriate Calibration Kit zero cap over the SensorGard
inlet and wait two minutes; otherwise, use zero gas.
2. Using Zero Gas Cylinder:
a. Locate the Zero Gas Cylinder and the Calibration Kit
Flow Controller.
b. Screw the Flow Controller onto the top of the Zero Gas cylinder.
c. Locate the Calibration Kit Tube Assembly.
2-11
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