Label inDescriptionPart
ÄKTA avant 150ÄKTA avant 25
Q9Q9Quaternary valve3
V9H-IBV9-IBInlet valve B4
NANAIntegrated air sensor (behind the
plug)
5
A1 to A7A1 to A7Inlet ports of Inlet valve A6
Q1 to Q4Q1 to Q4Inlet ports Q1-Q4 of Quaternary
valve
7
A and BA and BOutlet ports from Quaternary valve
to Inlet valve A and Inlet valve B
8
Function of Inlet valve A and Inlet
valve B
Inlet valve A and Inlet valve B enable automatic changing between different buffers and
wash solutions, and can be used to generate gradients by mixing buffer from Inlet valve
A and buffer from Inlet valve B.
The air sensors integrated in Inlet valve A and Inlet valve B can be used to prevent intro-
duction of air into the pumps and columns. For information on how to change settings
and parameters for the use of air sensors, see Chapter 5 Operation, on page 155.
The Run Data for air sensors shows the status of the air sensor. If an alarm is triggered
and then acknowledged, the Run Data will be reset to No Air even if there still is air in
the sensor. When the flow starts another alarm will go off if air is still present.
Air sensor sensitivity
The air sensor sensitivity can be set to two values. Normal is used to detect when a
buffer or sample vessel is empty. High is used to detect small air bubbles.
UsageAir volume detectedParameter
ÄKTA avant 150ÄKTA avant 25
Detect empty
buffer/sample ves-
sels
100 μl30 μlNormal (default)
ÄKTA avant User Manual 29035184 AE 65
3 Standard instrument modules
3.4 Inlet valves
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