Chapter 2
Unpacking and Installation
Airnet II Particle Sensor Operations Manual
Page 2-5
Selecting a Location
When choosing the location for the Airnet II particle sensor(s), consider the following
to improve the utility of the unit.
Sample Point
– Position the particle sensor to ensure that the sampling probe is
pointed INTO the airflow you want to monitor.
• Accessibility
– The unit should be readily accessible for connecting and
disconnecting cables, and so on.
• Interference with existing equipment
– The unit should not interfere with access
to existing or known future equipment installations.
• Visibility
– The unit’s front and top panels should be visible from a reasonable
position.
• Mounting surfaces
– The proposed mounting surface should allow mounting
hardware to engage properly and should be of sufficient strength to support the
unit safely.
• Vacuum and purge tubing
– The unit should be located near appropriate sources
of vacuum and purge gas (if necessary).
• Cables
– The unit should be located near a source of grounded electrical power,
an Ethernet port, and any other devices it must communicate with. Cables should
reach from the unit to the connector without strain.
• Environmental conditions
– The unit should be located in an environment
consistent with its temperature, humidity, altitude, and other relevant
specifications.
• Electromagnetic interference
– The unit should be located away from strong
electromagnetic fields.
CAUTION
Do NOT
use the Airnet II particle sensor with sample tubing greater than six feet (1.8 M) long.
Lengths greater than six feet can cause the following negative effect:
• A decreased flow through the sample chamber, resulting in particle counts that are too low
Instead of using long tubing lengths, move the particle sensor closer to the sample point.
