MSA ALTAIR 5X Manual De Uso página 22

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:
Monochromatic display
TWA
-
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.
TWA calculation examples:
1 hour exposure of 50 ppm:
(1 hour x 50 ppm) + (7 hours x 0 ppm)
4 hour exposure of 50 ppm and 4 hour exposure of 100 ppm:
(4 hours x 50 ppm) + (4 hours x 100 ppm)
12 hour exposure of 100 ppm:
(12 hours x 100 ppm)
This page can be de-activated through MSA Link software.
Date Display
Current date appears on the display in the format: MM-DD-YY.
Last cal page
Displays the device last successful calibration date in the format: MM-DD-YY. This page can be de-
activated through MSA Link software or the SETUP - CAL OPTIONS page.
Cal due page
Displays the days until the device's next calibration is due (user selectable). This page can be de-acti-
vated through MSA Link software or the SETUP - CAL OPTIONS page.
Discoverable Mode page
Allows the user to put the device into Bluetooth discoverable mode in order to pair with another device.
This page can be deactivated through the SETUP - INSTRUMENT OPTIONS page.
WARNING
8 hours
8 hours
8 hours
ALTAIR 5X/ALTAIR 5X IR
Color display
= 6.25 ppm
= 75 ppm
= 150 ppm
Description
US
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