MSA Ultima Instruction Manual page 4

explosion may occur. If such a location must be monitored,
use an explosion-proof Ultima Gas Monitor model.
7. The Ultima IR combustible 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 should never be
used to monitor for hydrogen gas.
Failure to follow the above can result in serious personal
injury or death.
" CAUTIONS
1. As with all gas monitors of these types, high levels of, or long
exposure to, certain compounds in the tested atmosphere
could contaminate the sensors. In atmospheres where an
Ultima Gas Monitor may be exposed to such materials,
calibration should be performed frequently to ensure that
operation is dependable and display indications are accurate.
2. The Ultima Gas Monitor must not be painted. If painting is
done in an area where a Monitor is located, care must be
exercised to ensure that paint is not deposited on the
sintered, metal flashback arrestor in the inlet fitting of the
Ultima Gas Monitor, if so equipped. Such paint deposits
would interfere with the diffusion process, whereby a sample
of the atmosphere being monitored diffuses into the Monitor.
3. The only absolute method to ensure proper overall operation
of an Ultima Monitor is to check it with a known
concentration of the gas for which it has been calibrated.
Consequently, calibration checks should be included as part
of the routine inspection of the system.
4. Protect the Ultima Gas Monitor from extreme vibration. Do
not mount the sensing head in direct sunlight as this may
cause overheating of the sensor.
Failure to follow the above can result in injury, product
damage and/or an unsafe condition.