Troubleshooting
AQUATRAN 3/38 Operator’s Manual
8-2
Revision G
MOCON, Inc.
Recovering from a Sensor Over-Range Condition
A severe over range condition will terminate the test sequence on both cells.
If you see a red Cartridge Status indicator (on the front of the instrument), the test has failed due to a
permeant sensor over-range condition. In addition to the red Cartridge Status indicator, an error indicator
may be displayed on the Home screen.
Examine the data on the Cell Status screen to determine the cause of the over-range condition. The Cell (or
Cells) that caused the over-range will be “Failed”. If the ReZero Cell failed due to an over-range condition all
active tests will be failed.
Possible causes may be:
•
The sample has a high transmission rate. To correct the problem testing can be done using a
lower water vapor concentration test gas or a foil mask.
•
The sample has pinholes, cracks or a poor-sealing surface.
•
The cartridge is installed and clamped but no barrier is present.
•
The o-ring seals on the top of the Test Cell are missing or damaged.
After correcting the cause of the malfunction restart the test on the failed cell (or cells).
Recovering from a Power Failure
The instrument software records data at periodic intervals. This data is used to assist in recovering from
power failures and instrument restarts.
If testing is interrupted after the instrument has restarted testing will resume from the point at which it was
interrupted.
