Maritime Emission Monitoring Analyzer (Infrared Spectrometry based)0 pages

BAGGI BA-MEM
Maritime Emission Monitoring Analyzer
(Infrared Spectrometry based)
The BAGGI BA-MEM is part of the BAGGI BASE®
Instruments Series. They are the result of combining
the latest state-of-theart-technology with over
50 years of industry
experience.
The BA-MEM analyzer
is able to monitor
continuously the
emissions from large
diesel engines, either
fixed or onboard ships.
The sensors are tested
against extensive
physical disturbances, including vibrations (IECD 68).
The BA-MEM is a Combustion Emission Monitoring
system able to meet the requirements of both
customers and Environmental Authorities worldwide.
The measurements performed by the infrared sensor
for assessing the quality of the Exhaust Gas Cleaning
Systems are typically:
• SO2 (0 – 500 ppm)
• CO2 (0 – 10 %)
• NOx (0 – 1500 ppm)
The analyzer operates upon the single beam dual
wavelength infrared technology where pulses of two
specific wavelengths are transmitted through the
sample cell in the stack mounted sensor. The
‘measure’ pulse is partially absorbed by the gaseous
component to be measured, while the ‘reference’
pulse is relatively unaffected. A total of 8 wavelengths
are available and in some circumstances reference
wavelengths are shared. This allows up to 6 gas
concentrations to be measured simultaneously (e.g.
NO, SO2, CO, CO2, H2O). The specific wavelengths
used are application dependent.
As shown in the figure, the analyzer (sensor) is
located directly inside the stack, avoiding the need of
extracting a sample from the stack. This eliminates
the necessity of costly sample handling systems, but
more importantly the analysis is performed on an

TDSCS00402AR0_BAMEM

unmodified and truly representative gas sample. The
analyzer executes the algorithms for calculating the
gas concentrations and includes temperature and
pressure probes for
their automatic
compensation.
When requested, an
additional dedicated
sensor can be
mounted into the
stack for O2
measurement.
The system is
completed by the
Control/Verification
unit, made by the
BASE® Series
embedded computer and the related actuators. The
Control/Verification unit runs an application software
for:
• collecting the measurement values from the
sensor(s);
• archiving the results in standard CSV format;
• presenting a graphical user interface (GUI) to the
Operator;
• transmitting remotely the information via current
loops, relay signals, serial lines and WiFi;
• verifying the zero setting of the system by filling
the sample probe with clean and dry
instrument air;
• verifying the span setting by filling the sample
probe with certified span gas;
• purging the sample cell with instrument air.
The Control/Verification unit is available also in ATEX
certified versions.
This rugged system is designed for low maintenance:
only a single annual check is recommended. The
typical life of the Infrared source is four years.

page 1

B.A.G.G.I . SrL – V.le Campania,29 20133 Milano Italy – Tel. +39 02715547 – Fax +39 027490571 – baggi@baggi.com