MSA FiveStar Specifications download pdf (Page 32)

OPERATION MSA

32 ALTAIR PRO - Operating Manual

Carry out the calibration as follows (also see Fig. 7and Fig. 8):

(1) Press the button.

 "

TEST" "GAS" "?" is displayed.

(2) Press and hold the button for 3 seconds.

 "

TEST" "CAL" is displayed.

 After 3 seconds, "

FAS" "?" is displayed which prompts the user to do a

fresh air equalisation.

(3) During the "

FAS" "?" display, press the button to do a fresh air equalisation.

If no fresh air equalisation is carried out, the instrument returns to

normal operating mode.

 During the equalisation, the hour glass and "FAS" are displayed.

 If the equalisation fails ("

ERR" display), the instrument returns to normal

operating mode after 5 s.

(4) If the equalisation is successful ("

OK" display), press the button and begin

the calibration.

 "

CAL" "?" is displayed.

(5) During the "

CAL" "?" display, press the button and start the calibration

mode.

 The value for the test gas in ppm is displayed.

(6) To change the value, press and hold the button, until the desired value is

set.

 The new value for the test gas in ppm is displayed.

The button can be held down to change in larger increments.

 After 3 seconds, the instrument returns to the calibration mode.

(6) Feed test gas into the instrument (possible test gases  Section 5.3).

Attention!

The concentration of the test gas used must match the stipulated

value in the "Test gases" table in Section 5.3 for the relevant

instrument.

Otherwise, the calibration is not carried out correctly. If there is a fault,

it can lead to serious damage to health or even to death.

 The gas value, hour glass and "CAL" are displayed alternately.

 If calibration is successful, after approx. 90 s "

OK" is displayed and the

instrument returns to normal operating mode after 5 seconds.

 If calibration fails, "

ERR" is displayed and the instrument returns to

normal operating mode after 5 seconds.

The current values were not changed.

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MSA FiveStar Specifications Page 32

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