MSA ALTAIR 5X PID Operating Manual page 22

15 minute exposure of 35 ppm:
(15 minutes x 35 ppm)
15 minutes
10 minute exposure of 35 ppm and 5 minutes exposure of 15 ppm:
(10 minutes x 35 ppm) + (5 minutes x 5 ppm)
15 minutes
This page can be de-activated through MSA Link software.
Time Weighted Average (TWA page)
If the TWA alarm activates, leave the contaminated area immediately; the ambient gas concentration
has reached the preset TWA alarm level. Failure to follow this warning will cause over-exposure to
toxic gases and persons relying on this product for their safety could sustain serious personal injury
or death.
This page shows the average exposure over 8 hours since the device was turned ON or since the TWA
reading was reset. When the amount of gas detected is greater than the eight-hour TWA limit:
-
Alarm sounds
-
Alarm LEDs flash
-
"TWA ALARM" message flashes.
To reset the TWA Readings:
(1) Access the TWA page.
(2) Press the button.
The TWA alarm is calculated over an eight-hour exposure.
= 35 ppm
= 25 ppm
WARNING
ALTAIR 5X PID
Description
US
22