MSA altair 4x - Page 19

MSADescription
ALTAIR 4X
20
GB
TWA calculation examples:
1 hour exposure of 50 ppm:
4 hour exposure of 50 ppm and 4 hour exposure of 100 ppm:
12 hour exposure of 100 ppm:
Time Display
Current time appears on the display in a 12 hour format by default.
A 24-hour format can be selected using MSA Link.
Date Display
Current date appears on the display in the format: MMM-DD-YYYY.
Last cal page
Displays the device last successful calibration date in the format:
MMM-DD-YYYY
Cal due page
Displays the days until the device's next calibration is due [user selectable].
Motion Alert Activation
To activate or deactivate the Motion Alert feature, press the  button while the
Motion Alert Activation page is displayed. When the Motion Alert feature is active,
the Motion Alert symbol [ chapter 2.3] will flash every 3 seconds. The device will
enter pre-alarm when no motion is detected for 20 seconds. This condition can be
cleared by moving the device.
After 30 seconds of inactivity, the full Motion Alert alarm is triggered. This alarm can
only be cleared by pressing the  button.
[1 hour x 50 ppm] + [7 hours x 0 ppm]
= 6.25 ppm
8 hours
[4 hours x 50 ppm] + [4 hours x 100 ppm]
= 75 ppm
8 hours
[12 hours x 100 ppm]
= 150 ppm
8 hours
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