INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 52)

46 ISP-074-576-P1D 46
Instrument Status
The instrument status is shown on the left of the first line of the status display. Each
status has a priority assigned to it. If more than one status is in effect, then the
status with the highest priority is displayed until the condition is corrected or until the
option is turned off. Table 1 is a list of the possible system alerts.
Table 1. System Alerts
2020ppbPRO
Display Description
Zero Air Error Zero gas too high
Span Gas Error Span gas too low
Pump Error Pump fault
UV Lamp Error UV lamp fault
Blocked Filter Blocked sample inlet filter
Low Battery Icon Low battery
Data Log Full Data memory full
The Unit is
Communicating with
the PC Instrument communicating with PC
Instrument Over
Range Sample concentration over instrument
operating range
Alarm + R Icon Real time concentration alarm
Alarm + T Icon TWA concentration alarm
Alarm + S Icon STEL concentration alarm
System Alerts and Alarms
While operating the instrument, system alerts can occur. To accurately identify the
source of the alarm, each type of alarm has been given a unique status.
In addition to the status, the 2020ppbPRO also has an audio alarm and an alarm
LED. To conserve power, the 2020ppbPRO alternates between the LED and audio.
Different alarms are identified by the frequency at which the 2020ppbPRO alternates
between the audio and LED; Peak alarm is 5 times per second, STEL alarm is 2.5
times per second, and TWA alarm is 1.25 times per second.