ZK-D4330 (TP Version) 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
Metallic Items
The detector must be installed at a distance of 1 m from the fixed metallic items such as
aluminum alloy/stainless-steel windows, doors, etc. to prevent false alarms which may
affect the sensitivity of the detector. Also, the portable metallic objects must be kept at least
2 m away from the detector to avoid false alarms.
3.3.2
Floor
The installation floor must be flat and rigid to avoid any shake from the movement of the
people walking through the detector.
3.3.3
Electromagnetic Radiation and Interference
Since the detector uses Bilateral Receiver technology, it must be installed at a distance of at
least 1 m away from the sources of electromagnetic radiation or electromagnetic
interference as it may affect the sensitivity of the detector. The parameters that define the
distance are determined by the installation environment and it varies for different
installation environments.
The sources of electromagnetic radiation and electromagnetic interference can be
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.
3.3.4
Parallel Installation
No. of detectors installed parallelly
Distance between the detectors
2
> 10 cm
3
> 30 cm
4 or more
> 50 cm
NOTE:
The detectors must operate at a different frequency to avoid interference. The
distance varies according to the actual working environment.
