Oxygen Measurements; Warning - MSA ALTAIR Pro H2S Manual De Operación

• Enter a Low alarm sequence.
• The STEL alarm can be silenced for five seconds by pressing
the TEST button while it is still in alarm
• The STEL alarm is non-latching and will reset when STEL
reading falls below the STEL setpoint
• The STEL value can be cleared. (See FIGURE 2-5 for details.)
• The STEL alarm can be disabled using FiveStar LINK
Software. The latest software version can be downloaded from
the MSA webpage (www.msanet.com).
4. If the TWA (Time Weighted Average) reading reaches or exceeds
the TWA alarm setpoint:
• The instrument will:
• display and flash "LO" and "ALARM" on the LCD
• Enter a Low Alarm sequence.
• The TWA alarm can be silenced for five seconds by pressing
the TEST button while it is still in alarm
• The TWA alarm is latching and will not reset
• The TWA value can be cleared. (See FIGURE 2-5 for details.)
• The TWA alarm can be disabled using FiveStar LINK Software.
• Refer to the instrument during Test mode for factory-set alarm
setpoints.
If a toxic or oxygen gas alarm condition is reached while
using the instrument as a personal or area monitor, leave the
area immediately: the ambient condition has reached a pre-
set alarm level. Failure to follow this warning will cause over-
exposure to toxic gases, which can result in serious person-
al injury or death.

Oxygen Measurements

• The ALTAIR Pro Detector can be purchased to measure the
concentration of oxygen in an atmosphere.
• The value displayed is percent by volume of oxygen in the
atmosphere.
• High and Low alarm setpoints can be configured to alarm in
any combination of oxygen:
• enrichment (greater than 20.8%) or

! WARNING

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