MSA Ultima XI Instruction Manual page 3

General Warnings and Cautions
1. The Ultima XI Infrared Gas Monitors described in this manual
must be installed, operated and maintained in strict accordance
with their labels, cautions, warnings,instructions, and within the
limitations stated. Verify that the class, group, and temperature
ratings of the equipment agree with the actual classification of
the location.
2. The Ultima XI Infrared Gas Monitor is designed to detect gases
or vapors in air. It can also measure the concentration of gases or
vapors in steam or inert or oxygen-deficient atmospheres. .
3. Use only genuine MSA replacement parts when performing any
maintenance procedures provided in this manual. Failure to do so
may seriously impair instrument performance. Repair or alteration
of the Ultima XI Infrared Gas Monitor, beyond the scope of these
maintenance instructions or by anyone other than authorized MSA
service personnel, could cause the product to fail to perform as
designed.
4. The Ultima XI Infrared Gas Monitor detects the presence of most
combustible gases by identifying the difference in the amount of
infrared light energy absorbed during the presence of these gases.
This monitor, however, does NOT detect the presence of hydrogen
gas and must never be used to monitor for hydrogen gas.
5. The standard Ultima XI Infrared Gas Monitor does not detect the
presence of acetylene gas. The presence of acetylene gas will
desensitize sensor performance. Custom-built acetylene sensors
are available through your MSA representative.
6. CSA performance Certification to standard C22.2 No. 152 is valid
only when the instrument is calibrated on methane per the
instruction manual.
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