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Installation
June 2016
Section 2: Installation
2.1
Unpacking and inspection
Carefully remove all of the components from the packaging and verify them against the enclosed
packing list. Inspect all components for any obvious damage such as broken or loose parts. If you find
any components missing or damaged, notify your local Net Safety representative or the factory
immediately.
Recycling of packaging should be taken into consideration and disposed of in accordance with local and
national legislations/regulations.
2.2
Locate sensor
Prior to installing the sensor, a plan should be developed for placement of the sensor. Although there
are no absolute rules for determining the quantity of detectors or location of a sensor, the following
points should be considered when planning the installation.
Carefully locate the sensor in an area where gases may potentially accumulate, considering that
light gases tend to rise and heavy gases tend to fall and accumulate in low areas.
Use redundant systems to enhance protection and reliability.
Consider air movement patterns in the facility.
Consider the construction of the facility such as trenches where heavy gases or peaks where light
gases may accumulate.
Seek advice from experts knowledgeable about the target gas to be detected.
Refer to the regulatory publications that discuss guidelines for your industry.
Avoid placing the sensor where it may be exposed to splashing or direct water sprays. To protect the
sensor a splashguard may be required.
2.3
Direct mount or sensor separation
2.3.1
Sensor direct mount
The sensor can be directly attached to a Millennium II transmitter and placed in an appropriate location
for detecting the target gas, or the sensor can be separated and remotely mounted away from the
Millennium II transmitter. The sensor should be accessible for calibration and maintenance purposes.
The transmitter should be located where it is accessible and visible.
2.3.2
Sensor separation
If the sensor is to be remotely mounted from the transmitter, the sensor must be connected to a
certified junction box. In this case, the transmitter is typically located near eye-level for easy access and
the sensor is mounted where the gas is likely to accumulate.
2
Reference Manual
MAN-0091, Revision 8
Installation
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