Calibration cylinders supplied by SCOTT INSTRUMENTS contain 25 PPM H2S 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
Cl2 = 5.0 ppm ClO2 = 5.0 ppm Cl2 HCN = 10.0 ppm
H2S = 25 ppm NH3 = 25 ppm
NO2 = 5.0 ppm PH3 = 1.0 ppm SO2 = 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 |
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