

Chemical Technology • May 2015
36
Complete the grid
so that every row
across, every column
down and every 3x3
box is filled with the
numbers 1 to 9.
That’s all there is to
it! No mathematics
are involved. The grid
has numbers, but
nothing has to add up
to anything else. You
solve the puzzle with
reasoning and logic.
For an introduction to
Sudoku see http://
en.wikipedia.org/
wiki/Sudoku
Solution
for SUDOKU
104
SUDOKU NO. 105
Chemical Technology
is the only publication in Africa for chemical
engineers focusing on all unit operations in a comprehensive way
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etc
The Africa Automation Fair 2015 took
place from 5 – 7 May 2015 at The Dome,
Northgate, Gauteng. As a showcase for
industrial control technologies, it is one of
the biggest, most comprehensive shows of
this type held in the southern hemisphere.
On Tuesday 5 May, ‘ChemTech’ at-
tended a Laser Technology breakfast at
the Africa Automation Fair as guests of
Endress+Hauser. Laser technology is seen
as a “real solution for industrial online gas
applications”. The company has recently
strengthened its analytics business on
a broad scale. SpectraSensors, a global
leader in laser-based gas analysis with
absorption spectroscopy, became part of
the Endress+Hauser Group in 2012 and
the following year, Kaiser Optical Systems,
a pioneer in the field of RAMAN spectros-
copy, was acquired.
Both companies will continue to operate
as independent competence centres, but,
because advanced analysis technologies
are fast, reliable and highly precise and
require no expendable materials and no
special environmental conditions, they
are cost-effective and low maintenance,
thus driving down operational expenses.
SpectraSensors’ gas analysers are de-
signed for process control and monitoring
applications and the RAMAN instruments
from Kaiser Optical systems are used in
production as well as in the lab.
To tell us all about the technologies were
visitors to South Africa, Koen Roelstraete,
Director of International Sales at Spectra-
Sensors, and Dr Peter van Vuuren, respon-
sible for worldwide business development
for the laser-based Optograph Process RA-
MAN analyzer product line manufactured
by Kaiser Optical systems Inc.
After a welcome by Rob MacKenzie,
Managing Director of Endress+Hauser, Mr
Roelstraete gave us an historical overview
of the
Tunable diode laser absorption spectroscopy(TDLAS) technology which
delivers fast and accurate gas analysis
measurements. The products are used
in natural gas production, transport, stor-
age, distribution, gas processing, refining,
petrochemical, and specialty and bulk gas
production. The analyzers measure Mois-
ture (H
2
O), Carbon Dioxide (CO
2
), Hydrogen
Sulfide (H
2
S), Ammonia (NH
3
), Acetylene
(C
2
H
2
), Oxygen (O
2
). The headquarter is
located in Houston, Texas with production
facilities in Rancho Cucamonga, California.
For more information on the company and
the offering please visit
www.spectrasen- sors.com.
Kaiser Optical Systems, Inc’s principal
products include Raman sensors and in-
strumentation and advanced holographic
components for spectroscopy, telecom-
munications, astronomy and ultra-fast
sciences. Off-the-shelf and customized
solutions for end-users and OEMs are
available. The special qualities of the
Optograph chromatograph are that no
valves, columns, carrier gas or instrument
air are required. For more information on
the company and the offering please visit
www.kosi.com.
Acquisitions reinforce the position of
the Endress+Hauser Group and expand
its fields of activities as well as support-
ing clients with solutions and services for
industrial process engineering. Related
companies expand the company’s product
range with know-how in areas of lab-ana-
lytics, and advanced analyser systems for
liquids, solids and gases as well as energy
consulting and sensor technologies.
For more information,
contact Kgomotso
Makhobela, Endress+Hauser, on tel +27 11
262 8000, or email
info@za.endress.comEndress+Hauser showcases their laser technology