ZK-D3180
User Manual
Copyright©2021 ZKTECO CO., LTD. All rights reserved
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10
3.3
Installation Site
The following section describes the requirements of the installation environment.
3.3.1
Stationary Metallic Items
The detector must be installed away at 1m from the stationary metallic items such as
aluminum alloy/stainless-steel windows, doors, etc. to prevent false alarms and affecting the
sensitivity of the detector.
3.3.2
Portable Metallic Items
The portable metallic objects must be kept away at 2 meters from the detector to avoid false
alarms.
3.3.3
Floor Vibration
The installation floor must be flat and fixed to avoid false alarm from the movement of the
people walking through the detector.
3.3.4
Electromagnetic Radiation and Interference
Since the detector uses Bilateral receiver technology, the detector must be installed away at a
distance of at least 1 meter from the sources of electromagnetic radiation or electromagnetic
interference. The parameters that define the distance are determined by the installation
environment and the parameters vary for different installation environments.
The sources of electromagnetic radiation and electromagnetic interference are given below:
Electrical Control Box, Radiofrequency equipment, Interphone, High Power Motor, Power
Transformer, Ac Power Lines, Thyristor Control Circuit (High Power Switching Power Supply,
Inverter Welder), Engine, Motor, etc.
3.3.5
Parallel Installation
When two detectors are installed parallel to each other, the distance between two detectors
must be greater than 50cm. When three detectors are installed parallel to each other, the
distance between each detector must be greater than 80cm. They must operate at a different
frequency to avoid interference. The distance varies according to the actual working
environment, it is not recommended to mount three detectors in parallel, the frequency can
be adjusted according to the environment.
