Recovering From A Sensor Over-Range Condition; Recovering From A Power Failure - Ametek mocon AQUATRAN 3/40 Operator's Manual

Troubleshooting
Symptom:
Comment:

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 Cell Status indicator (next to a Test Cell Clamp\Unclamp button), the test has failed due to
a permeant sensor over-range condition. In addition to the red Cell 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.
•
The sample has pinholes, cracks or a poor-sealing surface.
•
The Test Cartridge is not installed, not clamped or no barrier is present.
•
The O-ring seals on the side 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.
9-2
Abrupt changes in display readings or long-term cyclic oscillations.
Unwanted data fluctuations observed during a test cycle may be caused by abrupt
changes in the carrier gas flow rate. Such a transient symptom can be produced by a
temporary restriction in any gas line, or gas usage by another system.
AQUATRAN Model 3/40 Operator's Manual
Revision D MOCON, Inc.