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Operation
Alarms Menu
NO, NO
2
Concentration
Min and Max NO, NO
Concentration Limits
3-70
Model 42i Trace Level Instruction Manual
auto calibration screens are visible only if the auto calibration option is
enabled and function the same way.
In the Main Menu, choose Alarms > Zero or Span Autocal.
●
, and NO
The NO Concentration screen displays the current NO concentration and
x
sets the minimum and maximum alarm limits. Acceptable alarm limits
range from 0 to 200 ppb and 0 to 500 μg/m
programmed as a floor trigger (alarm is triggered when the concentration
falls below the minimum value) or a ceiling trigger (alarm is triggered when
the concentration goes above the minimum value). If the NO
concentration goes beyond either the minimum or maximum limit, an
alarm is activated. The word "ALARM" appears in the Run screen and in
the Main Menu. The NO
same way.
In the Main Menu, choose Alarms > NO, NO2, or NOx
●
Concentration.
, and NO
The Minimum NO Concentration alarm limit screen is used to change the
2
x
minimum NO concentration alarm limits. The minimum and maximum
NO, NO
way.
In the Main Menu, choose Alarms > Select Concentration > Min or
●
Max.
ZERO AUTO CALIBRATION:
ALARM:
RESPONSE:
RANGE
AVG
DIAGS ALARM
and NO
2
NO CONCENTRATION:
ACTUAL
>MIN
MAX
MIN TRIGGER
RANGE
AVG
DIAGS ALARM
, and NO
concentration alarm limit screens function the same
2
x
OK
5.0
3
. The minimum alarm may be
concentration screens function the
x
62.7
0.0
200.0
CEILING
Thermo Fisher Scientific
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Troubleshooting
