11
3
INSTALLATION
Before proceeding to install the device read the warnings and instructions in this section and in the paragraph
‘
Installation, use and safety information
’ carefully. Please note that
Turnstiles.us
is not responsible for any
damage that may result from installations that do not follow these guidelines.
3.1 Preliminary layout inspection and positioning
General Rules
Transit requirements
The Metal Detector will be positioned, according to the requirements
dictated by the transit, in such a way as to allow the maximum flow of people and observance
of the rules for installation.
Minimum distances - Electrical and mechanical compatibility
Move any possible source
of electrical/electronic interferences in general away from the metal detector probe: the
distance depends on the type and power of the device and on the setting of the Metal
Detector. The following examples describe some relevant aspects related to the presence of
an X-Ray Unit installed close to the Detector.
Choosing the installation place according to the equipment protection degree
.
Standard and Anti-Vandalism configuration: indoor applications.
Weather resistant configuration: this configuration can be applied in
outdoor sheltered installation where occasional rain can occur.
IP65 configuration This configuration can be applied in outdoor sheltered
permanent installations or outdoor non-sheltered short-term installations
(single event entrance).
3.1.1
Examples of possible sources of interference
TX
RX
2
4
1
3
D2
D1
11
9
8
7
6
12
D3
10
4
5
Typical Layout of Access Point equipped with an X-Ray Unit
Recommended minimum distance
Sensitivity Level/
Object Size Class
D1
Radiating source
(ex.: CRT monitor, switch-
mode power supply)
D2
Large fixed metal mass
(ex.: X-Ray Unit, metal
furniture, metal wall)
D3
Large moving metal mass
(ex.: metal door, metal cart)
Large Object Size
60 cm (2 ft)
40 cm (1.3 ft)
100 cm (3.3 ft)
Medium Object Size
100 cm (3.3 ft)
70 cm (2.3 ft)
150 cm (5 ft)
Small Object Size
150 cm (5 ft)
100 cm (3.3 ft)
200 cm (6.6 ft)
All numeric distances indicated in this paragraph are indicative and depend on the detection
performance
required by the specific application and on the nature or extent of the source of interference.
The X-ray unit is in the immediate vicinity of the MD and may provide several sources of
interference:
-
the monitor (electrical interference)
-
the conveyor belt motor (electrical interference)
-
the mechanical components of the conveyor belt (mechanical interference). Example:
metal side-panel not firmly fixed.
The higher the required security level is, the stronger the influence of the above mentioned
sources might be.
1 MD centring with respect to the X-ray unit
Centre the MD with respect to the X-ray unit, as illustrated in the figure.
303-670-1099
