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S PEC SHEET
IMACC Extractive Monitoring System
The IMACC Fourier Transform Infrared (FTIR) Extractive
Monitoring System is an industrial monitor for stacks, and process
applications utilizing infrared technology, giving real-time
measurements of up to 200 different gases including organics,
inorganics, acids, and volatile organic compounds.
DESCRIPTION AND PRINCIPLE
OF OPERATION:
THE MOST CUSTOMIZABLE AND HIGHLY
VALUED EQUIPMENT IN THE BUSINESS:
The IMACC FTIR Extractive
Monitoring System uses an
extraction line and pump that
pulls the air sample through an
internal cell in the accessory.
The system collects continuous
spectra of the sample,
analyzes it, and provides a
continuous readout of
concentrations.
IMACC FTIR Monitoring Systems employ a unique
design, incorporating a standard base unit with
additional monitoring accessories that allow
multi-functionality to suit both monitoring and
financial needs.
Notable Features:
Stable, rugged, industrialized system for CEM
or process monitoring
Simple, fully automatic operations for months
at a time
Accessories are snap on with “pin in place”
alignment
Monitors up to 50 compounds in real time
Full alarming capability by compound
Preprogrammed software with graphical
interface and display systems
Portable system for mobile use
The IMACC FTIR Extractive Monitoring
System comes with a standard base unit of
operation, with different accessories that allow
multiple monitoring configurations.
The standard base unit consists of:
Michelson interferometer with 0.125/cm
resolution “dash-pot” movement
Fully dynamic alignment system
Spectral range from 400/cm to 8000/cm,
with typical operation from 400 to 4000/cm
depending on compounds desired
ZnSe or KBr beamsplitter depending
on applications
AND THE MOST RUGGED:
IMACC’s FTIR Monitoring Systems maintain
optimum alignment in the harshest environments with
ease, standing up against rapid temperature changes
or the vibrations produced from near-by equipment.
USED WITH TRUST:
DETECTION LIMITS:
IMACC technology is found at major industrial,
petrochemical, and chemical facilities world-wide
and is used by the U.S. EPA and other research
institutions for emissions and air quality monitoring.
Detection limits are influenced by the sample and its contents. The detection limits can
change slightly with time as the sample stream changes composition. For every
system, IMACC provides detection limits for all the compounds of concern to the
particular facility. IMACC cell-based systems can achieve detection limits close to
noise limited values, particularly if some sample preparation is used.
FOR A VARIETY OF APPLICATIONS :
The extractive accessories can be used to monitor
multiple points of air quality concerns.
REPRESENTATIVE FTIR DETECTION LIMITS*
Stack gas monitoring: continuous emission
monitoring in stacks, vents, or abatement systems.
SPECIES
POINT SAMPLING
(ppmv*m)
32 m cell**
(ppbv)
Ammonia
.3
9
1, 3 Butadiene
.3
9
Carbon Tetrachloride
.2
6
Chloroform
.2
6
1, 4 Dioxane
.3
9
The system monitors “hot/wet.” As a result, all cell
accessories have an option for temperaturecontrolled heating of the cell and the extraction
line(s) so they can be operated at temperature up to
200C; this is necessary in saturate streams or for
high temperature streams. The accessory comes in
several different configuration
5cm, 10cm, or 15cm fixed path length cell
1m to 10m adjustable path length cell
4m to 32m adjustable path length cell
Custom 25m to 150m adjustable path length cell
Fromaldehyde
.8
25
Hydrogen Chloride
.5
13
Hydrogen Cyanide
.4
13
Isobutylene
.4
13
Isopropanol
1.0
31
Methylene Chloride
.8
25
Nitric Acid
.2
6.4
Ozone
.5
16
Phosgene
.2
6
Silane
.1
3
Styrene
.2
6
The cell and its feed lines are heated so all
measurements are made on a hot/wet basis.
Trichloroethylene
.3
9
1, 1, 1 Trichlorethelyne
1.0
31
Vinyl Chloride
.5
16
Process control: real-time monitoring of industrial
processes or gas streams with
continuous feedback and alarm systems.
FTIR EXTRACTION SYSTEM OFFERINGS:
*Requires the Mark V cooled detector
** Detection limit may involve water drying of the sample
32m adjustable
path length with
base cell.
SOFTWARE PACKAGE:
A complete, user-friendly Windows®-based control and display software package is
provided with every instrument. The graphical display packages produce a variety of
plots/displays in real-time including gas concentrations as a function of time, bar charts
of concentrations versus alarm levels, and correlation plots showing the relationship
between various detected compounds. The reporting software allows for generation of
custom tabular reports by the user.
Inside 32m
accessory cell.
FTIR SPECIFICATIONS:
The appropriate attachment is dictated by the sampling
to be done. The shorter fixed path length cells are used
for percent-level sampling with a detection limit in the
0.05% range, the 1-10m cell is used for ppm–level
monitoring with a detection limit in the 0.1 ppm range,
the 4-32m cell provides for monitoring the high ppm to
mid ppb range with a detection limit in the 30 to 50
ppb range, and the large 25-150m cell is used for very
low ppb level detection having a detection limit in the
1-2 ppb range. All accessories are interchangeable to a
single FTIR base unit.
Detection limits - low ppbv levels depending on target species, path length used, and
response time required
Dynamic range - ppb-levels to high percent
Response time - Typically 10 sec. to 1 min.
Calibration - None required but internal reference cell available
Output - Continuous analog 4-20 mA RS-232, RS 485, or LAN link
Environment - 0°C - +40°C ; 0 - 98% RH
PHYSICAL SPECIFICATIONS:
Base unit - 16” (l) x 20” (w) x 9” (h)
Extractive monitoring accessory - 5cm, 10cm, 10m and 32m cells internal to base
unit, all optionally heatable to 185C
Electronics - All versions of interface electronics are internal to base unit
Power - 120/220 VAC; 15 Amps current draw with heated cells
Options - Custom cells, heated extraction lines and cells, laptop computer for systems control
800 Paloma Drive, Suite 150
Round Rock, TX 78665
imacc-instruments.com
Robert Spellicy, Ph.D.
rspellicy@imacc-instruments.com
512-341-8189
Troy Boley, Ph.D.
tboley@imacc-instruments.com
770-883-7082