Systems
Product Information [ MultiSpec® Raman ]
MultiSpec® Raman: Raman Spectrometer for Laboratory and Process
The Raman effect is caused by inelastic scattering when
from the excitation light. Energy transfers from the pho-
light interacts with molecules. Most of the incident light
ton to the molecule cause rotational or vibrational tran-
scatters elastically making a broadband source impracti-
sitions [Stokes] or transfer energy from the molecule to
cal. Thus for most common Raman techniques, a mono-
the photon [anti-Stokes]. Since the energy gained/re-
chromatic light source is used. The incident photon’s
leased corresponds to a molecule’s energy levels, this
energy changes in accordance to quantum mechanical
leads to characteristic fingerprints by which molecules
rules and can be detected as a shift in the wavelength
can be identified and quantified.
[ Raman has been proved to be useful analytic technique in a number of industries ]
❚ Chemical
❚ Forensics
❚ Pharmaceutical
❚ Biological
❚ Geological
❚ Nanomaterials
❚ Semiconductors
❚ Polymers
While in Laboratory applications a wide variety of systems
are available, the number of analyzers for use in process
environments was limited to a few.
Serving the market for 20+ years with spectrometer systems
for the UV-VIS and NIR wavelength region, including the
[ MultiSpec® Raman with Probe ]
modular software package MultiSpec Pro II, tec5 delivered
process proven spectrometer systems. Based on this experience, tec5 chose to close the gap to Raman spectrometer
systems with process capabilities.
© tec5 AG
[ Raman Spectrum ]
[ Features ]
❚Raman analyzer for process applications
❚ Short measurement time [depends on application]
❚Installation according to Laser class 1
❚ MultiSpec Pro II Raman process software
❚ 785 nm excitation wavelength
❚ Optional software process interfaces [OPC, Profibus, etc.]
❚ Temperature-stabilized laser source
❚ Optional software modules for chemometrics and data analysis
❚ Optical probes for different measurement setups
❚ Software development kits [SDKs] available
[liquids, solids, measurements through glass]
❚ Monitoring of Laser operating hours
❚ High-sensitive stabilized CCD detector
❚ 19” rack-mount standard
Systems
Product Information [ MultiSpec® Raman ]
[ System Design ]
MultiSpec® Raman Process Spectrometer System
As the spectral sensitivity of the measurement system is crucial for the applicability of this technique since only a small
portion of the incident photons are Raman shifted. Matching
the single components used of the instruments is essential.
Amongst them are the spectral efficiency of the polychromatic setup, the quantum efficiency of the detector, the
Laser Source
A temperature-stabilized semiconductor laser provides
50 – 500 mW of 785 nm excitation light. It is housed in a
plug-in cassette with a FC/APC fiber-optic output connector at the front panel of the laser cassette which allows an easy connection to a fiber-coupled Raman probe.
Spectrometer Module
The Raman system uses a high throughput, high-resolution
spectrometer with a sensitive TE-cooled scientific CCD array for detection. In conjunction with state-of-the-art electronics developed by tec5, it allows accurate measurements
Fiber-Optic Raman Probe
Being the forefront of the spectrometer system, the probe
accumulates the spectral information and confine it through
a set of lenses and filters and prepare it to be relayed in optical fibers to the measurement system. Aside from the optical
properties, which have been matched to optimize the power budget of the spectrometer system. In contact with the
sample is a Titanium/Saphire process tube, which features
high thermal, chemical and pressure resistance. Providing
information on the Laser state with a yellow LED and serving
as a bridge to the interlock loop, the probe can be adapted
to a number of measuring points.
fiber diameters used of the setup and finally the light source,
which is determining the accuracy of the Laser. Taken all this
factors into account, the spectrometer line MultiSpecwas
expanded by a new instrument which is readily available for
your application.
Four serial interlocks prevent the accidental activation of
the laser. A special circuitry supervises interlock status and
monitors life time of cassette and laser.
Two external interlocks can be adapted by the customer to
ensure safe operation of the system.
with unsurpassed dynamic range. The spectrometer input is
a standard SMA fiber-optic connector located on the front
panel of the MultiSpec Raman spectrometer cassette.
For different samples and measurement scenarios different
probes have been designed:
To measure through an optical process window, a probe with
a focal length of 7.5 mm is available. The immersion probe
with 1.5 mm focus features a smaller penetration depth of the
focal beam so it may be used in translucent or opaque liquids. We supply also a probe with parallel beam to measure
solids. The 3 mm beam diameter is perfectly used to measure a specific area of the sample with only one shot. With
this probe the need for multiple measurement points is no
longer necessary and reduces the analysis time extremely.
[ Raman Probe – LED + Interlock Connector ]
Systems
Product Information [ MultiSpec® Raman ]
Laser Installation according to Class 1
High output power of the laser diode, which are required for
an efficient data acquisition process in Raman spectroscopy
limit the applicability of most systems. With the holistic approach of tec5, an installation according to laser class 1 is at
Laser
your fingertips. The Laser interlock is monitoring every connection point from the laser source via optical fiber cables,
the probe and the measurement volume.
Laser
Status
LED
Spectrometer
Optical fibers
Interlock
signal
Laser
Status
LED
Probe
Interlock
signal
Process
[ Class 1 Laser Installation ]
[ Software and PC Interfaces ]
MultiSpec® Pro II Raman Process Package
tec5’s spectroscopy software MultiSpec Pro II is available in
a Raman version that features wavenumber scaling and other specific tools to adapt the software to the requirements
of Raman measurements. The tools include intensity correction, optional background spectrum subtraction and allows
the use of the peak detection and data export functionality
of the MultiSpec Pro II software. Thus, automated process
control by Raman spectroscopy is immediately available and
easily configurable for standard applications.
[ MultiSpec® Pro II
Result View ]
The MultiSpec Raman is equipped with an Ethernet interface
for use in Ethernet or Gigabit Ethernet networks. The unit is
also available with a HiSpeed USB interface.
Process Communication
The MultiSpec systems can be equipped with an OPC interface or various add-on I/O-boards [4 – 20 mA, digital I/Os,
Profibus] for process communication to transfer results
and status information [e.g. system error, system warning,
out-of-range signal] to a process control system. Additionally, a remote control from an SPS or DCS is available to
trigger maintenance measurement cycles or to stop continuous data aquisition.
[ MultiSpec® Pro II Raman Package ]
Systems
Product Information [ MultiSpec® Raman ]
[ Technical Data ]
Laser Excitation Source
Laser Type
Fiber coupled, stabilized multimode diode laser
Wavelength
785 nm
Output Power
50 - 500 mW, adjustable
Output Connector
Laser Class
FC-APC with 105 µm core diameter
3B [Class 1 Installation possible]
Interlocks
4 [Key Switch, Probe Connected, and 2 external]
Spectrometer Section
Spectral Sensor
Diode array simultaneous spectrometer [no moving parts]
Detector Type
High dynamic range, scientific TE-cooled CCD detector
Spectral Range
300 – 3100 cm
Resolution
5 cm-1 typ.
Integration Time
3 ms – 10 min [typ.]
Fiber Probe
Probe Material [in contact with sample]
Focal Plane
Titanium / Sapphire [brazed]
1.5, 7.5 and none [parallel beam] from front window
Length of Fibers
5 m [standard], other lengths available on request
Temperature Range
5-180°C
Pressure Range
-1 - 100 bar [without Flange]
Interlock
Connector on the probe body
Laser Status
LED, yellow
Miscellaneous
Power Supply
110 / 220 V; 50 / 60 Hz
Weight
Operating Temperature
132.55 x 448.90 x 375.5
12 – 15 kg
5 °C – 35 °C
[ Alternatively, a user may take advantage of software development kits provided for the modular product range to fully
program for any application. ]
Headquarters
tec5 AG | In der Au 27
61440 Oberursel, Germany
T. +49.(0)6171.97 58-0
[email protected] | www.tec5.com
MultiSpec® is a registered trademark of the tec5 AG.
www.tec5uk.com | www.tec5usa.com
tec5_PI_Systems_MultiSpec Raman_e_2014|09
Dimensions [mm ]
3