Thermo Scientific TVA2020, Инструкция по эксплуатации

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Display Menus
Alarm Levels
Thermo Fisher Scientific TVA2020 Instruction Manual 3-11
The three types of user configurable alarms are:
Table 3–2. Alarm Configurations
Alarm Type Description
STEL: The Short Term Exposure Limit alarm indicates that measurements
averaged over a running 15-minute interval have exceeded the set
alarm limit. Once this alarm is acknowledged, the letter S appears to
the right of the live measurement for the appropriate detector.
Low Ceiling: This alarm is a warning that a lowest level threshold has been
exceeded. Once acknowledged, the letter L appears to the right of the
live measurement for the appropriate detector.
High Ceiling: This alarm is a warning that a second, higher level, threshold has been
exceeded. Once this alarm is acknowledged, the letter H appears to
the right of the live measurement for the appropriate detector. The FID
maximum setting is 30000 ppm.
The three alarm messages appear on the instrument display as follows:
==== ALARM! ==== PID: 1039ppm S
STEL alarm level FID: 2180ppm S
alarm exceeded!
Exit=Clr Press char key
==== ALARM! ==== PID: 1039ppm L
Low ceiling FID: 2180ppm L
alarm exceeded!
Exit=Clr Press char key
==== ALARM! ==== PID: 1039ppm H
High ceiling FID: 2180ppm H
alarm exceeded!
Exit=Clr Press char key
Note
To display and change the alarm menus, the instrument must be ON
but does not have to be warmed up. ▲