Why is my 5500sc AMC analyzer stuck in a 'measurement' mode without any progress?

Document ID

Document ID TE12836

Published Date

Published Date 02/04/2021
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Question
Why is my 5500sc AMC analyzer stuck in a 'measurement' mode without any progress?
Summary
5500 AMC stuck in measurement mode
Answer
When a 5500sc AMC analyzer seems to be stuck showing a 'measurement' message without any progress or new results it could be an indication the level sensor (also called a float sensor) on the sample holder isn't working properly.
 
The level sensor is used to stop incoming sample flow when the sample holder is full.  If this float sensor is faulty or not communicating properly the analyzer stays in a flush mode.  When the analyzer is stuck in flush the normal operation of the analyzer is halted and the display shows 'measurement' without any new results.  There is currently no warning for this float sensor or an analyzer stuck in a flush mode. 
If you suspect the level sensor may be causing the issue, watch the analyzer for at least 4.5 minutes to ensure if finishes the current cycle and updates the screen.  If the 'measurement' message doesn't change check to make sure the level sensor has the correct input configuration.

See the following articles for more information on the 5500 AMC float/level sensor   
How can I check that my 5500 AMC level sensor input is correct?
How do I troubleshoot a 'Sample Missing' error on my 5500 AMC analyzer?
How does the 5500 AMC measure sample flow rate?

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