Nuctech RT1003E User manual

RT1003E Liquid Security Inspector
Concept of Operations
for ECAC LEDS Test
CONOPS RT1003E V3.1
Dated 2014-11-19

TABLE OF CONTENTS
1Product profile........................................................................................................................1
2Technical characteristics........................................................................................................3
3Technical principle.................................................................................................................4
3.1 Technical theory of Raman spectroscopy.....................................................................4
3.2 Raman spectrums of common dangerous substances...................................................6
4System structure and function...............................................................................................6
4.1 Optical module..............................................................................................................7
4.2 Control subsystem ........................................................................................................7
4.3 Operator interface subsystem........................................................................................ 7
5Operation Manual ..................................................................................................................8
5.1 Power on.......................................................................................................................8
5.2 Sample Inspection......................................................................................................... 9
5.3 Inspection results........................................................................................................ 11
5.4 Power Off ................................................................................................................... 13
6Routine Care and Maintenance...........................................................................................14
7Points of note.........................................................................................................................16
8Precautions............................................................................................................................16
9Product configuration ..........................................................................................................16
9.1 Standard configuration................................................................................................16
9.2 Optional accessories ...................................................................................................17
10 RT1003E's technical specification.......................................................................................17

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1Product profile
NUCTECH®RT1003E Raman Liquid Explosive Detection System (LEDS) has been
designed and manufactured by Nuctech Company Limited for security inspection applications.
This version has been specifically designed with the requirements of airport security lanes in mind
since a single RT1003E can be located between, and accessed from, two adjacent lanes. In this
application it meets the requirements of the ECAC Type B Liquid Explosive Detection Systems
(LEDs)
The RT1003E uses Raman spectrum technology and identifies the material at the
molecular level. RT1003E can analyse most dangerous materials in most types of container and
identifies the threat material. The inspection process is simple, rapid (a few seconds) and the False
Alarm Rate is very low. These characteristics make the RT100E very efficient in airports for
security inspection of Liquids, Aerosols and Gels (LAGs).
RT1003E employs a two sided door to enclose the laser beam whilst providing easy access
from either side. This means it can be used for between two security inspection channels and
improving efficiency by minimising the distance the Security Staff have to move.
The outer appearance of the RT1003E is shown in Figure 1. Further details are shown in
Figure 2 to Figure 5.
Figure 1 RT1003E's outer appearance

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1LCD touch screen, 2Barcode scanner, 3 Printer
Figure 2 Operation Panel
1RJ45 network interface used for network transmission, 2Type B USB interface used for
equipment support, 3Power cord, 42-off TypeA USB interfaces used to connect external USB
devices such as a USB keyboard, mouse, or USB disk, 5 RS-232 interface used for peripherals
such as a printer; 6 Power switch.
Figure 3 Communication Interfaces and power supply connections
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1 Probe, 2 Platform where the substance to be inspected is placed, 3Handle to adjust height
Figure 4 Inside of the sample chamber
1Outer cover, 2 Inspection Chamber door; 3 Indicator light band
Figure 5 Outside of the sample chamber
The sample chamber comprises the optical probe, the height of which can be quickly and
easily adjusted to suit various containers, and a protection cover / door, which are designed to
ensure the safety of the Operator when the laser is active.
2Technical characteristics
RT1003E uses Raman spectroscopy to analyse the material being examined.
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The Raman spectrum of a material has 'unique fingerprint' type properties, and RT1003E
assesses these to identify the material
RT1003E provides nondestructive inspection of the material and does not destroy any of
the material.
With a fast inspection throughput capability the RT1003E can complete the analysis in a
few seconds. The next inspection can be carried out without any recovery interval being
required.
Thanks to its' capability and automatic spectrogram database updating function
RT1003E can inspect and analyze most common dangerous liquids, aerosols and gels and
analyze their composition. It can automatically update the spectrogram database according to
specific requirements of users to expand the inspection scope and enhance the range of
materials it can identify.
RT1003E provides a user-friendly Operator interface that comprises a 7-inch LCD touch
display and software interfaces designed with ergonomic considerations as a key driver. It
can store analysed data and has a wide range of data interface- options to export data and
integrate with other devices.
RT1003E does not use a radioactive or ionising source and is safe for Operators to use.
3Technical principle
3.1 Technical theory of Raman spectroscopy
When a substance is irradiated, some of the scattered photons change their energy. This
phenomenon is called inelastic scattering. It was first discovered by Indian physicist C.V. Raman
in 1928 and was named Raman scattering. The energy change of the inelastic scattering depends
on the molecular energy level of the irradiated substance. Different molecules have different
rotational and vibrational energy levels, therefore, Raman spectrums have fingerprint properties,
and molecules can be identified by analyzing the spectrum of Raman scattering light.
RT1003E has a large spectra library composed of Raman spectrum of dangerous liquids.
When a substance is inspected, it is irradiated by laser light and the Raman spectrum is collected.
Substances are identified by comparing their Raman spectra with those in the library.
The RT1003E's optical part comprises the following primary parts: (A) laser transmitter (B)
external light path and (C) spectrometer.

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Figure 6 Optical part
The entire inspection process of RT1003E generally includes excitation, collection, optical
filtering, spectrum splitting, examining and analyzing functions.
Excitation:
The laser transmitter emits laser light, which passes through the filter to remove the
background radiation and is then focused on the substance to be examined.
Collection:
After the substance is irradiated, the incident photons are scattered by the molecules of the
substance. The scattered light includes Rayleigh scattering whose wavelength is the same
with that of the incident light and Raman scattering whose wavelength is different from that
of the incident light. Part of the scattered light is collected by lens and collimated.
Optical Filtering:
The collected and collimated scattered light will pass through a specially coated lens which
filters out the Rayleigh scattering. The Raman scattering will pass through the lens.
Spectrum splitting:
On entering the spectrometer, the filtered Raman scattering light is diffracted by the grating
of the spectrometer into with different wavelengths which are received by different pixels of
the Charge-coupled Device (CCD).
Examining and analyzing:
The CCD can turn optical signals into electronic signals. By analyzing electronic signal
intensity on different pixels, the CCD can obtain the light signal intensity and then obtain the
Raman spectrum of the substance. By comparing the peak position and intensity of the
Raman spectrum collected with those of spectrums in the database, the device can analyze
whether the substance is dangerous and which category it is.

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3.2 Raman spectrums of common dangerous substances
Figure 7 Raman spectrums of common dangerous substances (relative data, for explaining
the theory only)
4System structure and function
Overall the RT1003E can be considered as composing the optical module, the machine control
subsystem and the Operator interface subsystem.

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Control system
Touch screen
Display screen
Light band
Door
Power switch
Laser Spectrometer
External light path
Inspected
object
Optical
module
Battery
(optional)
Control signal Control signal Spectral data
Laser Signal light
Laser Signal light
Figure 8 System structure and functions of inspection section
4.1 Optical module
The optical module is the critical part of RT1003E and is described above.
4.2 Control subsystem
The control subsystem has the following functions: supplying power for the laser transmitter
and spectrometer; running the operating system and software; controlling the laser transmitter and
spectrometer; collecting and analyzing spectrum signals from the spectrometer; controlling the
touch display, indicator lights, buzzer and fans.
4.3 Operator interface subsystem
The subsystem is designed to provide the Operator-machine interaction, give warnings and
send the user's operations on the touch display or alarm confirm button to the control subsystem.
The light band is used to indicate the result of the analysis. The LCD is also an important
Operator-machine interface as it also gives the inspection results and show all prompts/additional
information, as shown in Figure 9 (typical data).

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1 Counter; 2 Alarm counter; 3 Inspect result name; 4 Advanced Function; 5Detail Button; 6
Inspection result; 7 Battery status (option); 8 Buzzer; 9 Time
Figure 9 Software Interface
5Operation Manual
5.1 Power on
As shown in Figure 10, insert the power line into the power socket. Turn on the RT1003E by
pressing the power switch. The RT1003E will then perform a self-test.
Figure 10 Power supply and power switch
When the start-up process is finished, the equipment enters into the ready state, as shown in
Power line
Power switch
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