3
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INSTALLATION ENVIRONMENT
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1. Stationary Metallic Items
When installing the WTMD, it should stay away from the stationary or fixed bulk
metal items 2 meters; otherwise it will affect the sensitivity and cause false alarm.
Metal items such as: aluminum alloy / stainless steel doors and windows, with
reinforced wall, etc.
2. Movable Metallic Items
The big metal items can be moved, should stay away from the device about 5 meters
to avoid false alarm. Especially install the detector at factory gate or ground floor,
need to pay attention to the effect of rolling gate, iron security doors, elevators and
cars on the detector.
3. Floor Vibration
The floor should be flat and fixed, to avoid false alarm after installation by the
movement of people walking or moving and shaking of metal objects.
4. Electromagnetic Radiation And Electromagnetic Interference
Because the device uses bilateral transceiver technology, therefore, any
electromagnetic interference sources and electromagnetic radiation source are not
allowed to close the device, the recommended distance is 1~2 meters. The parameters
of the distance are determined by the installation environment, and different
installation environments with different parameters.
The electromagnetic interference sources and electromagnetic radiation sources as
following:
Electrical Control Box, Radio Equipment, Interphone, Electronic Computer And
Peripheral Equipment, Video Monitor, High Power Motor, Power Transformer, Ac
Power Lines, Thyristor Control Circuit (High Power Switching Power Supply,
Inverter Welder), Engine, Motor etc.
5. Side-By-Side Using(more than 2 pieces WTMD)
When installing the WTMD side by side more than 2 pieces, there will be a
certain degree of influence between each WTMD, it is related to the distance and the
frequency between WTMD. The distance between 2 WTMDs can not be less than
50cm. Specific distance parameters according to the actual environment and the
selection of the work frequency to adjust.
6.
Can not install the device in windy place. It would cause of false alarm if the
device would slight swing in the wind.
