
small power plants, small gas turbines
food industry steam boilers
cogeneration heat and power engines (CHP)
bio methane and methane boilers
waste incinerators, ovens and kilns
ethanol and palm oil plants and more
industrial heaters and dryers
SWG 100 - CEM - Instrument main features are:
field replaceable, plug & play pre-calibrated sensors
very compact industrial design, for up to 6 gas simultaneous measurement
use low cost but reliable electrochemical cells for O2, CO, NO, NO2, SO2
and infrared module (NDIR) for CO2 measurement
advanced sample gas preparation for fast and reliable measurements
flexible platform can be used for various combustion applications
direct and continuous/discontinuous measurement, with pressure and temperature
compensation of all main flue gas parameters
external measurements (temperature, pressure, etc.) by reading of ext. standard signal
simple installation, ready to run delivery and easy to maintain
Sample gas inlet with heated or
unheated gas sampling line
EC cells for O2/CO /NO/NO2/SO2
with cut-off and purge for CO cell
outputs 4 channel 4-20 mA,
RS485 and 2x alarm relays
90-240 Vac 47-63 Hz / 90 W
ventilation fan with alarm
The complete, ready to use emissions analyzer SWG 100 CEM is the low cost solution
to be used with a wide variety of industrial emissions monitoring applications:

The MRU continuous emission monitoring analyzer SWG 100 CEM, is designed for use in the harsh industrial
environment of different combustion sites, where flue gas emissions must be continuously monitored.
The analyzer can be installed in outdoor or indoor locations, can sample dry or wet flue gas, pressurized or
low pressure flue gas, even from a long distance sampling point.
The analyzer system can be configured with different gas sampling probes and sampling lines to optimize the
Basic analyzer for wall or rack mounting, IP54 protection, aluminum
cabinet with anti-corrosive red structural lacquer and fan ventilation
Condensate separator and automatic condensate draining pump
Monitored ambient air ventilation, with alarm display for fan rotation failure
Sample gas pump and internal sample flow
monitoring with alarm in case of filter clogging
Solenoid valve for auto-zero with ambient air and
for auto-calibration with span gas
1/8” threads for all sample gas, zero gas and
calibration gas inlets, fittings for DN6/4mm tube
3.5” TFT color, backlit display and keyboard,
password protected operation
RS485 digital data transfer (Modbus RTU)
Universal power supply 90 - 240 Vac /47-63 Hz / 90 W
O2 measurement with long-life EC cell
CO measurement with protected EC cell using
cut-off solenoid valve and air purging pump
NO measurement with EC cell
NO2 measurement with EC cell
SO2 measurement with EC cell
CO2 measurement using infrared (NDIR) module
Thermoelectric gas cooler (Peltier) with constant dew point
and automatic condensate draining pump
Heated gas sampling probe model HD, with ceramic filter
and back-purge, for flying ash type flue gases
Heated gas sampling probe model HD-GW, with
quartz glass wool filter for acid mist flue gases
Unheated gas sampling probe model LD, for clean
combustions, using in-situ sintered metal filter
Heated gas sampling lines, from 5 to 75 m length, with temperature
regulation by analyzer or by internal thermostat, with single or
Module with 4 channel analog outputs/inputs 4-20 mA,
with 2x “fail safe” alarm relays
Converter module of RS485 into Profibus
Cabinet heater for freeze protection

DATA SUBJECT TO CHANGE WITHOUT NOTICE
Negligible with automatic zeroing
Less 0.2 % of range per month
Calc. NOx = 1.05*NO (if NO2 is not measured)
All emissions relevant mg/Nm3; user selectable O2 referencing
Combustion efficiency (fuel type depending), heat loss, dewpoint
HMI human machine interface
3.5” TFT color and backlit display
Keyboard and password protected operation
I/O module with 4channel, analog out 4-20 mA, floating, max. load 500 R
and 2 alarm relays, potential free contacts 24 Vdc/5 A
SD-card for data and event logging
RS485 digital interface (Modbus RTU)
DIN-rail RS485 / ProfiBus converter
Gas sampling probe HD, heated ceramic filter with back-purge, or gas sampling probe HD-GW,
heated quartz wool filter, or gas sampling probe LD, non-heated with in-situ sintered filter
Heated or non-heated DN4/6 mm PTFE sampling line
Thermoelectric gas cooler (Peltier type) with const.+5 °C dewpoint
Teflon particulate filter, internal Viton hosing
Controlled and regulated gas sampling pump
Constant gas sample flow of 50 l/h
Sample inlet pressure: -200 mbar to + 200 mbar
Sample venting: atmospheric pressure
Aluminum with anti-corrosive structural painting
27.55" x 23.61" x 8.26" (700 x 600 x 210 mm) ( H x W x D ) for wall or rack mounting
+5°C…+45°C standard, +5°C…+55°C with Vortec cooler, -10°C…+45°C with cabinet heater
Indoor or outdoor (rain and sun shade is mandatory user scope of supply)
Continuous, monitored fan ventilation
Cabinet Vortec cooler (requires 0,5m3/min clean and dry compressed air)
Universal 90 - 240 Vac / 47 - 63 Hz / 90 W (300 W with cabinet heater)
MRU Instruments, Inc.
Houston, Texas 77044
Tel.: (832) 230 - 0155
Fax: (832) 230 - 1553
info@mru-instruments.com
www.mru-instruments.com