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MiniCapt® Mobile Operations Manual
Chapter 1
: Introduction
Warning and Alarm Systems
Flowrate Monitoring Alarm
The system checks to see if the difference between the working flow and the ideal flow
(25 LPM, 50 LPM or 100 LPM) is within tolerance. At 20% difference, the instrument will
turn off and not continue to sample.
Audio and visual alarms are indicated until cleared by the user. The alarm is also
recorded in the sample data.
Battery Charge Monitoring Alarm
When the MiniCapt Mobile is operated via battery power (i.e., power not supplied from
the line current), the battery charge is checked in real time.
Two checks are used by the sampler to detect a discharged battery. A discharged
battery will cause a visual indication and an alarm.
•
The first battery check occurs when the instrument is started.
This helps to avoid sampling with a battery that is insufficiently
charged.
•
The second battery check occurs regularly during the sampling.
Whenever the battery charge drops outside the 10% tolerance
the system provides a warning, but will continue to sample. If
ignored, the sample may terminate and shut the system off.
The use of EEPROM (a resident data memory with non-volatile memory) ensures that
no data stored in memory can be changed, altered or lost by an inefficient battery or
by the complete absence of the battery.
