Welch Allyn MicroTymp Operating Instructions Manual page 13

The memory location indicated does not contain any data.
The test cannot proceed because desired pressures within the ear
have not been achieved. This occurs when:
the tip is not completely sealed in the ear canal.
l
the tip becomes dislodged during a test.
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the ear canal volume is abnormally large
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above 2.5~~ the OPEN
To alleviate this condition:
reposition the tip.
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use a different tip.
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increase pressure against the ear.
l
NOTE: If a leak condition occurs after -100 daPa pressure is
reached, the pattern will be displayed with a Save the Data Symbol.
BLANK MEMORY
LEAK
symbol will appear).
12
2cc but I 23x;