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10
Chapter 2 Installation
Installation Environment
In order to ensure the optimal operation of the detector and the maximum flow of people, the following important
factors are taken into account to minimize the impacts made by different interference sources.
Large fixed or immovable metal objects should be at least 1m (40in) away from the detector (to detect large metal
objects). This has less impact on the sensitivity, but may make the detector more susceptible to vibration.
The ground should be flat, with strong support, to prevent vibration, especially when there are vibration metal
structures under the ground.
The large metal objects moving outside the detector shall be kept at least at a distance of 0.5-2m (20-79in) from
the detector to avoid false alarm. According to the size of the metal object, the distance between the required
moving metal object and the detector may different.
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