Bio-Rad ChromLab™ Software - Manual (Page 64)

3 | Setting Up NGC Chromatography Systems
62 | NGC Chromatography Systems and ChromLab Software
Connecting the Air Sensors
The system supports up to two air sensor modules and up to eight air sensors. The
air sensor module has a magnetic backing and can attach to the side of the NGC
instrument. Each module can contain up to four air sensors. The system detects the
number of air sensors that are attached to the instrument.
The air sensors can be set to detect air in lines connected to the system pumps to
detect end of buffer. They can also be set to detect air in lines connected to the
sample pump to detect end of sample.
Two air sensors are available that differ in their internal diameter.
 Large air sensors connect to 1/8" ID FEP tubing
 Smaller air sensors connect to 1/16" ID PEEK tubing
Note: The air sensor module accommodates both sizes simultaneously.
The air sensors can be inserted into the ports on the air sensor module. ChromLab
detects the presence or absence of air sensors in the module. If you have fewer
than four air sensors on the module, you must cover the unoccupied ports with a
protective blank cover that is provided with the module to prevent liquid from
entering into the module's electronic circuitry.
Caution: All air sensors connected to the air sensor module must be filled with
liquid and devoid of air. A connected air sensor that is not plumbed and primed
can trigger an air-bubble sensing event, which causes the pumps to stop and
the blue air sensor LEDs to turn on.