6.7 ALARM SETPOINT MENU
The “ALARM SETPOINT” can be adjusted by the user in the ALARM SETPOINT menu within the following ranges:
CO | = 5 to 250 ppm |
Cl2 | = 0.1 to 10.0 ppm |
ClO2 = 0.10 to 2.00 ppm HCN = 0.1 to 50.0 ppm H2S = 5 to 100 ppm NH3 = 5 to 100 ppm NO2 = 0.2 to 5.0 ppm O2 LO = 0.0 to 21.0% O2 HI = 21.0 to 25.0% PH3 = 0.10 to 5.00 ppm SO2 = 0.5 to 20.0 ppm
Very low oxygen alarm settings are useful when the instrument is used to verify nitrogen purging. On leaving the setpoint function or on subsequent power on, the user will be prompted to verify the safety of abnormally low settings
To enter the ALARM SETPOINT menu, depress the “SELECT” pushbutton in the menu selection screen as described in Section 6.2 above. One of the following ALARM SETPOINT menu screens will appear:
| <gas> ALARM SETPOINT | |
For Toxic Gases | HI ALARM = <_> ppm | |
| CHANGE | OK |
| ALARM SETPOINT | |
For O2 | HI ALARM = 23.5% | |
| LO ALARM = 19.5% |
|
| CHANGE | OK |
The setpoint shown is the factory default setting. If acceptable, depress
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