Access Sensor Technologies UPAS User Guide 57
– 6 = Preemptive shutdown after pumps exceeded maximum drive
power during a controlled sampling.
This ShutDownMode can be associated with a highly-restricted flow
path (such as from an extremely high PM-load on a sampling filter.
– 7 = Preemptive shutdown after sample air flow was blocked for >30
seconds.
This ShutDownMode is associated with a blocked inlet or outlet.
Acquiring / Sending Debug Files
1 Connect the mobile device to the UPAS via the App as usual.
2 Toggle the Normal Log button so it becomes Debug Log.
3 Start a run at a relevant flow rate (presently only 1 L/min inlets are
available).
4 Let the UPAS sample and log data for approximately five minutes and then
shut down.
5 Transfer the resulting log file via file transfer (though App) or by removing
the microSD card and transferring to computer.
6 Send the resulting log file to Access Sensor Technologies.
Email to: Support@accsensors.com.
Conducting a Diagnostic Test (DIAG#)
The UPAS Diagnostics Mode (also known as DIAG#) runs the UPAS through
diagnostic tests. It is a special diagnostic mode to gather data which Access
Sensors Technologies evaluates for troubleshooting purposes.
Diagnostic Mode is only for self-testing the UPAS. It is not appropriate for any
intentional air sampling as it shifts flow levels repeatedly. Do not use this mode
for air sampling!
Understanding DIAG# mode
– Diagnostic Mode is a special self-test mode in which the UPAS
automatically runs through a comprehensive battery of tests that
demonstrates the performance range and provides data for the
diagnosis of UPAS internal problems.
– There is only an initial user interaction with the UPAS needed in a
Diagnostic Mode test, after which the UPAS runs the Diagnostic Mode
sequence until intentionally powered off by the user.
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