Ampcontrol Pty Ltd
– ABN 28 000 915 542
GG2 DETECTOR USER MANUAL
GG2B011 Version 3
– June/19
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 20 of 39
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Using the unit in a manner that exceeds its electrical, functional or physical specifications, or in a way
that is contrary to its operating restrictions, may result in equipment malfunction or loss of performance
The unit must be powered within the specified voltage range.
The installation of the unit must be carried out by suitably trained and qualified personnel.
Identification labels fixed to the unit must not be damaged, removed or covered before, during or
after installation.
The installation is to be in accordance with the relevant installation Standards/Codes of Practice.
Modifications must not be made to any part of the unit. Modifications to its construction will render
the unit non-compliant.
Complete and accurate records of the installation must be kept as part of the site installation.
Confirm the Intrinsically Safe parameters of the GG2 Detector, cables and power supply are
suitable for the application.
Ensure that the Conditions of Safe Use, listed in the certificate, are adhered to.
4.3 Installation Guidelines
4.3.1 Mounting Location
To ensure continued reliable operation of the GG2 Detector, the following should be considered when
mounting the unit:
Select a suitable central location for mounting with good access. The location should be as clean
and dry as practicable and at a temperature as close to 20°C as practicable.
Mount the sensor unit in a position that reduces the risk of mechanical damage.
Mounting should be to a vertical surface, pointing downwards, allowing for easy wiring access
and subsequent servicing.
It is essential that the sensor be positioned to take into account the expected flow of the gas to be
measured.
Allow sufficient space under the sensor for fitting of calibration cups or accessories.
Ensure to account for the relative density to air of the gas that is being detected.
NOTE
Customised gas panels and systems are also available as well as
sample draw panels. These can be designed specifically to your
gas sensing needs.
For more information call customer service on
1300 267 373
4.3.2 Relative Density of Gas Type
The relative density or buoyancy of the gas or vapour with respect to air determines its propensity to
rise or fall when released into the atmosphere.
Gases or vapours with buoyancy less than air will tend to rise from the source of release.
Conversely, gases or vapours heavier than air will tend to fall and accumulate in concentrations over
long periods of time. Normal air movements in and around such gas concentrations will have the
inevitable effect of producing zones of highly toxic mixtures.
This knowledge of the characteristics of the gas assists when determining the location of the gas
sensor. See Table 5 for gas density values.
For this reason, the detector should be installed in a location that is most suitable for the type of gas
being detected. The services of a Risk Assessment Engineer or specialist should be used if additional
assistance is required in selecting the position of, or the number of sensors required for the application.
