NOTES:
• If this is the first calibration or, if the sensor element has been
changed or replaced, see Section 2, "Initial Calibration."
• If this is an oxygen sensor, see Section 2, "Oxygen Calibration."
• If this is an XIR sensor, see Section 2, "XIR Calibration."
• Apply power to the unit at least 1 hour before calibrating.
• Due to the unstable nature of Chlorine Dioxide (ClO
2
), Chlorine
gas is used as a calibration simulant. If using the MSA calibration
system and gas cylinder (P/N 710331), the response ratio is 2:1.
In other words, the 2 ppm sample of Chlorine should be set to read
1 ppm of ClO
2
. The default value for the calibration gas on the
ClO
2
Ultima/Ultima X Series Gas Monitor is 1 ppm.
• For Cl
2
and ClO
2
calibration, do not mix regulators. Use only one
regulator for each of these gases. They will not work properly if
one regulator is used for multiple gases.
• Due to the reactivity of HCL with flow system components, the flow
control regulator must only be used for HCL gas. HCL gas must be
run through the flow control regulator and tubing for five minutes
before attempting a calibration. After a successful calibration, flush
the flow control regulator and tubing with 100% Nitrogen for five
minutes. Store the flow control regulator in the desiccated bag
included in Calibration Kit 54 or equivalent dry container.
INITIAL Calibration
When a new sensor is placed in the Ultima Gas Monitor, an INITIAL
Calibration must be performed. When a new sensor is placed in the
Ultima X Gas Monitor, an INITIAL Calibration is also recommended.
This procedure enables the unit to gather data about the sensor to
make accurate decisions for the CHANGE SENSOR function and the
CAL FAULT function to work properly. Additionally, INITIAL Calibration
should only be used when a regular calibration will not clear a fault
condition due to use of incorrect cal gas or other similar situation.
Initial calibration is accomplished by:
• pressing the ZERO and CALIBRATE buttons simultaneously on
the Ultima Calibrator
• pressing and holding the SPAN button on the Ultima Controller
• The Controller display shows "Do Init Cal 1=y"
• Press 1 while pointing the Controller at the Ultima/Ultima X
Series display.
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