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Calibration cylinders supplied by SCOTT INSTRUMENTS contain 25 PPM
H
2
S or 50 PPM CO. To use another certified concentration, depress the left
pushbutton below the “CHANGE” command. The one of the following screens
will be displayed:
<gas> SENSOR
For Toxic Gases SPAN CALIBRATION
GAS = <_> ppm <CALGAS>
UP DOWN
Factory preset span calibration gas values:
CO = 50 ppm
Cl
2
= 5.0 ppm
ClO
2
= 5.0 ppm Cl
2
HCN = 10.0 ppm
H
2
S = 25 ppm
NH
3
= 25 ppm
NO
2
= 5.0 ppm
PH
3
= 1.0 ppm
SO
2
= 10 ppm
If you select the “UP” pushbutton, for example, one of the following screens
will display with the number value flashing:
<gas> SENSOR
For Toxic Gases SPAN CALIBRATION
GAS = <_> ppm <CALGAS>
UP SET
When the desired value has been reached depress the “SET” pushbutton
and the “CHANGE/OK” screen will appear again. Select the “OK” pushbutton
and one of the following screens will display:
<gas> SENSOR
For Toxic Gases SPAN CALIBRATION
INJECT <_> ppm <CALGAS>
EXIT