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download orprint our technical andproduct information onour
extensive range ofmeasurement products.
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application.
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toenter keywords to be presented with a list ofdocuments containing
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Products available:Reference Gas Analysers
ML 9810 Ozone AnalyserThe Casella Monitor ML 9810 Ozone (O3)
Analyser is aU.V. photometer which accurately and reliably
measuresozone concentrations in ambient air.
Read More....
Think environment. Think Casella.
History GlossariesAir QualityApplicationsReference Gas
AnalysersGravimetric Particulate AnalysersReal-Time Particulate
AnalysersIndicative Multi-Gas AnalysersOdour
MonitoringCalibrationSoftwareEnclosures
EmissionsApplicationsMulti-Gas Stack AnalysersMercury
AnalysersSpecialist Analysers for:
Stack Emissions including MercuryVOCHydrocarbonBTEX
Natural Environment
ML 9820 CO2 Analyser
The ML 9820 family of analysers are based on gas
filtercorrelation spectroscopy whichprovides for accurate and
reliable measurements of CO2.
Read More....
ML 9830 CO AnalyserThe Casella Monitor ML 9830 Carbonmonoxide
(CO) Analyser is a Non-Dispersive Infrared (NDIR)photometer, which
uses Gas FilterCorrelation (GFC) to...
Read More....
ML 9841 Nitrogen OxidesAnalyserAdvanced design
chemiluminescenceanalyser providing accurate, reliableand efficient
monitoring of NO, NO2,and NOX.
Read More....
ML 9842 Ammonia AnalyserThe addition of an ammonia
thermaloxidizer to the Monitor Europe ML
9842 enables the measurement oflevels of ammonia in ambient
air.
Read More....
ML 9850 Sulphur DioxideAnalyserAn advanced design analyser
whichuses U.V. fluorescence technology tomeasure concentrations of
SO2accurately and reliably.
Read More....
ML 9850 HydrogenSulphide AnalyserThe addition of a hydrogen
sulphideand total reduced sulphur thermaloxidizer enables the
measurement oflow levels of hydrogen sulphide and...
Read More....
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Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
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product information on
our extensive range of
measurement products.
Choose your working
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on the link for your
application.
Alternatively our
database is searchable.
Simply click below to
enter keywords to be
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9810Ozone Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
FEATURES AND BENEFITS: MCERTS approved and fully compliant
with EN14625.
Small single glass cell reduces ozone loss.
No steering mirrors ensures exceptionalquality with reduced
cleaning and maintenance.
Low sample flow rate reduces contaminantimpact on expendable
items with reducedcost of ownership.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi-drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
Multi-drop RS232.Provides ease of storage and maintenance.
Drop-down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
MEASUREMENT PRINCIPLEThe Casella Monitor ML 9810 Ozone
(O3)Analyser is a U.V. photometer which accurately and reliably
measures ozone concentrations in ambient air.
Upon entering the pneumatic system, the gassample containing
ozone passes through aselective ozone scrubber which converts
theozone to oxygen. The sample, without ozone,passes through an
absorption cell where adetector measures the amount of 254nm U.V.
radiation absorbed. This reference measurement is defined as I0 and
its valueincludes any other gases and particulate matter which may
be present in the sample.
Upon completion of the reference measurement, the gas sample
containingozone bypasses the ozone scrubber andgoes directly into
an absorption cell. Thissample measurement of U.V. radiation with
ozone is defined as I.
The analysers microprocessor uses the Beer-Lambert relationship
to calculate theozone concentration using I0 and I.
The ozone concentration, automatically corrected for temperature
and pressurechanges, is displayed in ppm or mg/m3.Featuring a drop
down front panel for easyaccess includes a built-in data display
fortrends, averages, status and historical information in digital
and graphic format.
User selectable menu screens provide accessto all available
options and instrument setup.
The optimum measuring range is automatically selected for the
display and RS 232 outputs for each parameter.
Values are reported as floating point numbersavoiding range
selection and reporting.
Extended Memory capacity is incorporated in all ML9800 series
analysers providingrecorded data to be downloaded on site
orremotely utilizing MECOMM utility software orany computer
terminal program.
SYSTEM INTEGRATIONAnalogue Output:Providing both 0-, 2-, 4-20mA
as well asselectable voltage output, stand alone as well as multi
analyser rack systems, interfacewith both data logger and recorder
acquisition units.
Digital Output:Utilising RS 232 port, data-status-controls
areutilised either as Multi-drop shared betweenanalysers or
directly with external acquisitionsystems. Various software
packages facilitateease of data manipulation.
ANALYSER BLOCK DIAGRAM
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product information on
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Simply click below to
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information?
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E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9810Ozone Analyser
Specification
Optional components 50 pin I/O PCA, sample pump, particulate
filter, charcoal scrubber (not 9830), external zero span valves,
rack slides.
Optional zero and span (i.z.s) modules Type:- Internal three
point Ozone/Span on calibration device.Repeatability:- span is
typical 3% of previous reading.
Range Display & digital output: Auto-ranging 0 to 20ppm.
Display resolution = 0.001ppmSerial output resolution = 1ppt
Analogue output: 0-full scale from 0-0.05 ppm to 0-20 ppm with
0, 5, and 10% offset (with optional 50-pin I/O board).
Auto-ranging Analogue output: 2 user-specified 0-full scale
range values.
USEPA designated range: Any full scale range between 0-0.05 ppm
and 0-1ppm.
Noise Measurement process: 0.25 ppb or 0.1% of concentration
reading, whichever is greater, with Kalman filteralgorithm
active.
Analogue interface: 0.25 ppb or 0.1% of analogue output full
scale, whichever is greater.
Sensitivity. Lower detectable limit Measurement process:
-
Measurement product finder
Welcome to
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measurement
product finder
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product information on
our extensive range of
measurement products.
Choose your working
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on the link for your
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database is searchable.
Simply click below to
enter keywords to be
presented with a list of
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Want more
information?
T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9820CO2 Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
FEATURES AND BENEFITS:
The ML 9820 uses a long life infrared (IR)source and advanced
materials in the gasfilter wheel for trouble free operation
andminimum maintenance.
Sample flow rate is variable and allows forfaster purge during
zero and span cyclesand faster return to sampling mode. Thevariable
flow rate enables the analyser toget more data points at steady
state zeroand span conditions.
Access through the front panel for routinemaintenance
operations, such as filterchanges, eliminates the need to remove
theinstrument from a rack or take the cover off.
The analyser accommodates all analoginterface requirements
without additionaloutput boards or voltage to current
converters.
Internal vacuum pump and built-in sampleinlet particulate
filter.
THEORY OF OPERATION
The ML 9820 family of analysers are basedon gas filter
correlation spectroscopy whichprovides for accurate and reliable
measurements of CO2.
Three separate full scale ranges provide coverage of a wide
variety of applications.The three analysers in the family are
the98201000-101 ranging from 0-3000 ppm,the 98201000-102 from
0-1500 ppm and the 98201000-103 from 0-750 ppm. Eachanalyser is
configured specifically for its operational range at the factory.
It is importantto specify the operational range at the time
ofpurchase.
The ML 9820 analysers measure theabsorption of infrared
radiation (IR) within a folded path measurement cell.
Infraredbroadband radiation is passed through arotating gas filter
wheel where one filter cellcontains CO2 and another cell contains
N2.When the IR radiation passes through theCO2 portion of the
wheel, all wavelengths atwhich CO2 can absorb are completelyremoved
from the radiation, leaving thosewavelengths that are unaffected by
CO2 tocreate a reference beam.
When IR radiation passes through the nitrogen portion of the
wheel, CO2-specificwavelengths are not removed from the radiation
and a measure beam, which will be attenuated by any CO2 in the
sample, iscreated. The rotation of the gas filter wheel, in effect
creates a beam which alternatesbetween reference and measure
phases.
The alternating beam is passed through amultipass absorption
cell (white cell) whereCO2 is monitored by measuring the
attenuation of the measurement beam.
Since both the reference and measurephases of the beam have the
same source,detector, and optical path, only the amount of CO2 in
the sample cell can effect the difference in intensity between the
two phases. This methodology results in an instrument that is very
insensitive to interferentgases, fluctuations in the IR source,
vibrationand accumulation of dust on the optics.
The final concentration of CO2 corrected for temperature and
pressure changes, is displayed in units of parts per million (ppm)
ormilligrams per cubic meter (mg/m3).
EXHAUST
ZERO AIR10-15 PSI0.5 SLPM
SAMPLE
ZERO
SPAN
AIR
VALVEMANIFOLD
PRUGE AIR
OUTLET INLET
VARIABLE SPEEDPUMP
FLOW CONTROLMODULE
SOURCEMODULE
PARTICULATEFILTER
MEASUREMENTCELL)
)
) (
LEGEND
= PNEUMATIC
= ELECTRICAL
-
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measurement
product finder
resource.
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product information on
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Simply click below to
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9820CO2 Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
Specification
Ranges: Display: Autoranging 98201000-101, 0-3000
ppm.98201000-102, 0-1500 ppm.98201000-103, 0-750 ppm.Resolution =
0.01 ppm.Analog output: 0-full scale from 0-100 ppm to 0-full scale
with 0, 5 and 10% offset. Autoranging between 2 user-specified full
scale values.
Noise (RMS): Measurement Process: 1 ppm or 0.1% of concentration
reading, whichever is greater; with Kalman filteractive. Analog
output: 1 ppm or 0.1% analog output full scale, whichever is
greater.
Lower Detectable Limit: Measurement Process:
-
Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
Search, download or
print our technical and
product information on
our extensive range of
measurement products.
Choose your working
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on the link for your
application.
Alternatively our
database is searchable.
Simply click below to
enter keywords to be
presented with a list of
documents containing
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9830Carbon Monoxide Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
FEATURES AND BENEFITS: MCERTS approved and fully compliant
with
EN14626.
Long life infrared (I.R.) source and advancedmaterials in gas
filter wheel provide troublefree operation with low
maintenance.
12 volt D.C. internal operation provides safeserviceability with
low power consumption.
Low sample flow rate reduces contaminantimpact on expendable
items with reducedcost of ownership.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi-drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
Multi-drop RS232.Provides ease of storage and maintenance.
Drop-down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
MEASUREMENT PRINCIPLEThe Casella Monitor ML 9830 Carbonmonoxide
(CO) Analyser is a Non-DispersiveInfrared (NDIR) photometer, which
uses GasFilter Correlation (GFC) to measure low concentrations of
CO accurately and reliably.
Infrared broadband radiation is passedthrough a rotating gas
filter wheel where halfof the wheel contains CO and half
containsnitrogen. When the IR radiation passesthrough the CO half
of the wheel, all wavelengths at which CO can absorb arecompletely
removed from the radiation, leaving those wavelengths that are
unaffectedby the CO to create a reference beam.When IR radiation
passes through the nitrogen part of the wheel, CO-specific
wavelengths are not removed from the radiation and the measure
beam, which willbe attenuated by any CO in the sample, iscreated.
The rotation of the gas filter wheel, in effect, creates a beam
which alternatesbetween reference and measure phases.
The alternating beam is passed through a multi-pass absorption
cell (White Cell) where CO is monitored by measuring theattenuation
of the measurement beam. Sinceboth the reference and
measurementbeam have the same source, detector, andoptical path,
only the amount of CO in thesample cell can affect the differences
in intensity between the two phases.
The methodology results in an instrument that is very
insensitive to interferent gases,fluctuations in the IR source,
vibration, contamination and accumulation of dust on the
optics.
The final concentration of CO, corrected for temperature and
pressure changes, is displayed in ppm or mg/m3. Featuring a
dropdown front panel for easy access includes abuilt-in data
display for trends, averages, status and historical information in
digital and graphic format.
User selectable menu screens provide accessto all available
options and instrument setup.The optimum measuring range is
automatically selected for the display and RS232 outputs for each
parameter. Values arereported as floating point numbers
avoidingrange selection and reporting. ExtendedMemory capacity is
incorporated in all ML9800 series analysers providing recorded
datato be downloaded on site or remotely utilizingMECOMM utility
software or any computerterminal program.
SYSTEM INTEGRATIONAnalogue Output:Providing both 0-, 2-, 4-20mA
as well asselectable voltage output, stand alone as wellas multi
analyser rack systems, interface withboth data logger and recorder
acquisitionunits.
Digital Output:Utilising RS 232 port, data-status-controls
areutilised either as Multi-drop shared betweenanalysers or
directly with external acquisitionsystems. Various software
packages facilitateease of data manipulation.
ANALYSER BLOCK DIAGRAM
-
Measurement product finder
Welcome to
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measurement
product finder
resource.
Search, download or
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product information on
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Simply click below to
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9830CO Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
Specification
Optional components 50 pin I/O PCA, sample pump, particulate
filter.External Zero/Span (EZS) Value manifold kit.Internal S/S
valve for pressurised external span calibration source.
Range Display & digital output: Auto-ranging 0 to
200ppm.Display resolution = 0.01ppmSerial output resolution =
1ppt
Analogue output: 0-full scale from 0.1 ppm to 0-200 ppm with 0,
5, and 10% offset (with optional 50-pin I/O board).
Auto-ranging Analogue output: 2 user-specified 0-full scale
range values.
USEPA designated range: Any full scale range between 0-5 ppm and
0-100ppm.
Noise Measurement process: 0.025 ppm or 0.1% of concentration
reading, whichever is greater, with Kalman filteralgorithm
active.
Analogue interface: 0.025 ppm or 0.1% of analogue output full
scale, whichever is greater.
Sensitivity. Lower detectable limit Measurement process:
-
Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
Search, download or
print our technical and
product information on
our extensive range of
measurement products.
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9841Nitrogen Oxides Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
FEATURES AND BENEFITS: MCERTS approved and fully compliant
with EN14211.
Single-channel design for simplified operation and maximum
reliability.
NO and NO2 measurements from the samesample stream. No
misleading artefacts dueto stream switching.
Built-in Perma Pure drier eliminates replacement of drying
agents.
Chopperless design removes need toreplace belts or motors.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi-drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
Multi-drop RS232.Provides ease of storage and maintenance.
Drop-down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
MEASUREMENT PRINCIPLEThe Casella Monitor ML 9841 NitrogenOxides
Analyser is an advanced designchemiluminescence analyser providing
accurate, reliable and efficient monitoring of NO, NO2, and
NOX.
It incorporates a single-channel design forsimplified and
maximum reliability. Unique tothe ML9841 is the measurement of NO
andNOX from the same common sample volumeensuring that there are no
misleading artefacts due to stream switching.
A single reaction chamber and photomultipliertube (PMT) measure
the chemiluminescence(light) produced by the reaction between NOand
OZONE.
A common measurement sample is alternately switched either
through or around a NO2 to NO converter (heatedmolybdenum). Thus,
the instrument alternately measures NO and NOX ( NO +NO2 = NOX )
from the same sample volumeand the difference between the two
readingsprovide an accurate computed NO2 valueeven in
traffic-intensive locations.
NOX, NO, NO2 concentrations are correctedfor temperature,
pressure and flow changesand can be displayed in ppm or mg/m 3.
Featuring a drop down front panel for easyaccess includes a
built-in data display fortrends, averages, status and historical
information in digital and graphic format.
User selectable menu screens provide accessto all available
options and instrument setup.
The optimum measuring range is automatically selected for the
display and RS 232 outputs for each parameter.
Values are reported as floating point numbersavoiding range
selection and reporting.
Extended Memory capacity is incorporated in all ML9800 series
analysers providingrecorded data to be downloaded on site
orremotely utilizing MECOMM utility software or any computer
terminal program.
SYSTEM INTEGRATIONAnalogue Output:Providing both 0-,2-, 4-20mA
as well asselectable voltage output, stand alone as well as multi
analyser rack systems, interfacewith both data logger and recorder
acquisition units.
Digital Output:Utilising RS 232 port, data-status-controls
areutilised either as Multi-drop shared betweenanalysers or
directly with external acquisitionsystems. Various software
packages facilitateease of data manipulation.
ANALYSER BLOCK DIAGRAM
-
Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
Search, download or
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product information on
our extensive range of
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Simply click below to
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Want more
information?
T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9841Nitrogen Oxides Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
Specification
Optional components 50 pin I/O PCA, sample pump, particulate
filter, charcoal scrubber (not 9830), external zero span valves,
rack slides.
Optional zero and span (i.z.s) modules Type:- Internal
Permeation Oven.Output:- Single span point based on permeation tube
selected.Repeatability:- span is typical 3% of previous
reading.
Range Display & digital output: Autoranging 0 to 20ppm.
Display resolution = 0.001ppmSerial output resolution = 1ppt
Analogue output: 0-full scale from 0-0.05 ppm to 0-20 ppm with
0, 5, and 10% offset (with optional 50-pin I/O board).
Autoranging Analogue output: 2 user-specified 0-full scale range
values.
USEPA designated range: Any full scale range between 0-0.05 ppm
and 0-1ppm.
Noise Measurement process: 0.25 ppb or 0.1% of concentration
reading, whichever is greater, with Kalman filteralgorithm
active.
Analogue interface: 0.25 ppb or 0.1% of analogue output full
scale, whichever is greater.
Sensitivity. Lower detectable limit Measurement process:
-
Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
Search, download or
print our technical and
product information on
our extensive range of
measurement products.
Choose your working
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application.
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Simply click below to
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Want more
information?
T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9842Ammonia Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
The addition of an ammonia thermal oxidizerto the Monitor Europe
ML 9842 enables themeasurement of levels of ammonia in ambientair.
A highly efficient thermal oxidizer is able toconvert over 95% of
ammonia with minimalimpact on analyzer performance. The
MonitorEurope ML 9842 Ammonia Analyser is anadvanced design
chemiluminescenceanalyser providing accurate, reliable and
efficient operation.
FEATURES AND BENEFITS
Single channel design for simplified operation and maximum
reliability.
NO and NO2 measurements from the samesample stream. No
misleading artefacts dueto stream switching.
Built-in Perma Pure drier eliminates replacement of drying
agents.
Chopperless design removes need toreplace belts or motors.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi Drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
multi-drop RS232.Provides ease of storage and maintenance.
Optional 12 V.DC Power operation for battery or solar power.
Drop-Down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
The ML 9841 uses a single-channel designfor simplified operation
and maximum reliability. A single reaction chamber and
photomultiplier tube (PMT) measures thechemiluminescence (light)
produced by thereaction between NO and Ozone. The measurement
sample is alternately switchedeither through or around a NO2 to NO
converter (heated molybdenum). Thus, theinstrument alternately
measures NO and NOx(NO plus NO2 = NOx). The differencebetween the
two readings provides a computed NO2 value.
Within the ML 9841 we have introduced acarefully designed and
optimised 'true-timesample handling procedure' which ensuresthe
sample for NO and NOx analysis isalways carried out on the same air
sampleand that there are no misleading artefacts dueto stream
switching. This also eliminates theneed for any mathematical
correction as isnecessary in other competitive units.
The final concentration of NO and NO2, corrected for temperature
and pressurechanges, are displayed in units of parts permillion
(ppm) or milligrams per cubic meter(mg/m3).
A large built-in graphics data display isdesigned to present
trends, averages, statusand historical information in digital and
graphic format. User selectable menu screensprovide access to all
available options andinstrument set-up.
The ML 9841 automatically selects the optimum measuring range
for the display and RS232 outputs for each parameter.Values are
reported as floating point numbers, making range selecting and
reporting unnecessary. The instrumentincludes an
analogue-over-range feature that,when enabled, automatically
switches the analysers analogue output to a pre-selectedhigher
range.
-
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+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9850Sulphur Dioxide Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
FEATURES AND BENEFITS: MCERTS approved and fully compliant
with EN14212.
Long life zinc lamp, as U.V. source, interference free from
water vapour.
Chopperless design removes need toreplace belts or motors.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi-drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
Multi-drop RS232.Provides ease of storage and maintenance.
Drop-down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
MEASUREMENT PRINCIPLEThe Casella Monitor ML 9850 Sulphur Dioxide
(SO2) Analyser is an advanced design analyser which uses U.V.
fluorescence technology to measure concentrations of SO2 accurately
and reliably.
The ML 9850 depends on the fluorescentradiation produced by the
SO2 moleculeswhen excited by U.V. radiation. The excitationU.V.
radiation is measured by the referencedetector and the fluorescent
radiation ismeasured by a photomultiplier tube (PMT).The two
measurements are compared byratio in a classical dual channel
technique tocompensate against the effects of variation insource
intensity, optical contamination, andcommon PMT drift
characteristics.
Aromatic hydrocarbons are removed by aunique kicker that uses
differential partialpressure technique to selectively remove
aromatics across the permeable membrane,without influencing the SO2
sample. The finalconcentration of SO2 is corrected for temperature
and pressure changes and can be displayed in ppm or mg/m3.
Featuring a drop down front panel for easyaccess includes a
built-in data display fortrends, averages, status and historical
information in digital and graphic format.
User selectable menu screens provide accessto all available
options and instrument setup.
The optimum measuring range is automatically selected for the
display and RS 232 outputs for each parameter.
Values are reported as floating point numbersavoiding range
selection and reporting.
Extended Memory capacity is incorporated in all ML9800 series
analysers providingrecorded data to be downloaded on site
orremotely utilizing MECOMM utility software or any computer
terminal program.
SYSTEM INTEGRATIONAnalogue Output:Providing both 0-, 2-, 4-20mA
as well asselectable voltage output, stand alone as well as multi
analyser rack systems, interface with both data logger and recorder
acquisition units.
Digital Output:Utilising RS 232 port, data-status-controls
areutilised either as Multi-drop shared betweenanalysers or
directly with external acquisitionsystems. Various software
packages facilitateease of data manipulation.
ANALYSER BLOCK DIAGRAM
-
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product information on
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measurement products.
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application.
Alternatively our
database is searchable.
Simply click below to
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relevant links.
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T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9850Sulphur Dioxide Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
Specification
Optional components 50 pin I/0 PCA, sample pump, particulate
filter, charcoal scrubber (not 9830), external zero span valves,
rack slides.
Optional zero and span (i.z.s) modules Type:- Internal
Permeation Oven.Output:- Single span point based on permeation tube
selected.Repeatability:- span is typical 3% of previous
reading.
Range Display & digital output: Autoranging 0 to 20ppm.
Display resolution = 0.001ppm Serial output resolution = 1ppt.
Analogue output: 0-full scale from 0-0.05 ppm to 0-20 ppm with
0, 5, and 10% offset (with optional 50-pin I/O board).
Autoranging Analogue output: 2 user-specified 0-full scale range
values.
USEPA designated range: Any full scale range between 0-0.05 ppm
and 0-1ppm.
Noise Measurement process: 0.25 ppb or 0.1% of concentration
reading, whichever is greater, with Kalman filteralgorithm
active.
Analogue interface: 0.25 ppb or 0.1% of analogue output full
scale, whichever is greater.
Sensitivity. Lower detectable limit Measurement process:
-
Measurement product finder
Welcome to
the Casella
measurement
product finder
resource.
Search, download or
print our technical and
product information on
our extensive range of
measurement products.
Choose your working
environment and click
on the link for your
application.
Alternatively our
database is searchable.
Simply click below to
enter keywords to be
presented with a list of
documents containing
relevant links.
Want more
information?
T: +44(0)1234 847799
F: +44(0)1234 841490
E: [email protected]
Think environment. Think Casella.Tel: +44(0)1234 847799 Fax:
+44(0)1234 841490 Email: [email protected]
Casella, Regent House, Wolseley Road, Kempston, Bedford, MK42
7JY, United Kingdom
ML 9850Hydrogen Sulphide Analyser
History
Glossaries
Air QualityApplications
Reference Gas Analysers
Gravimetric Particulate Analysers
Real-Time Particulate Analysers
Indicative Multi-Gas Analysers
Odour Monitoring
Calibration
Software
Enclosures
EmissionsApplications
Multi-Gas Stack Analysers
Mercury Analysers
Specialist Analysers for:
Stack Emissions including Mercury
VOC
Hydrocarbon
BTEX
Natural Environment
The addition of a hydrogen sulphide and totalreduced sulphur
thermal oxidizer to theMonitor Europe ML 9850 Sulphur
DioxideAnalyser enables the measurement of low levels of hydrogen
sulphide and total reducedsulphur in ambient air. A highly
efficient oxidiser is able to convert over 95% hydrogensulphide
with minimal impact on analyzer performance. The Monitor Europe ML
9850Sulphur Dioxide (SO2) Analyser is anadvanced design analyser
which uses ultraviolet (UV) fluorescence technology to measure
concentrations of SO2 accuratelyand reliably.
FEATURES AND BENEFITS
Long life zinc lamp, as UV source, interference-free from water
vapour.
Chopperless design removes need toreplace belts or motors.
On-board data storage provides data backup and remote analyser
data downloadfor analysis, reports and archives.
Multi Drop RS232 allows connection of several analysers to
logger or direct toremote P.C./Software via modem.
Self diagnostics and full remote controlincorporated via
multi-drop RS232.Provides ease of storage and maintenance.
Optional 12 V.DC Power operation for battery or solar power.
Drop-Down front panel for quick and easyaccess to
consumables.
Internal or external pump for on-site flexibility.
The ML 9850 measurement processdepends on the fluorescent
radiation produced by the SO2 molecules when excited by UV
radiation. The excitation UVradiation is measured by the reference
detector and the fluorescent radiation ismeasured by a
photomultiplier tube (PMT).The two measurements are ratioed in a
classical dual channel technique to compensate against the effects
of variation insource intensity, optical contamination, andcommon
PMT drift characteristics.
Aromatic hydrocarbons are removed by aunique 'kicker' that uses
differential partialpressure technique to selectively remove
aromatics across the permeable membrane,without influencing the SO2
sample.
The final concentration of SO2, corrected for temperature and
pressure changes, is displayed in units of parts per million (ppm)
or milligrams per cubic meter (mg/m3).
A built-in graphics data display is designed topresent trends,
averages, status and historicalinformation in digital and graphic
format.
User selectable menu screens provide accessto all available
options and instrument set-up.
The ML 9850 automatically selects the optimum measuring range
for the display and RS232 outputs for each parameter.Values are
reported as floating point numbers, making range selecting and
reporting unnecessary.
The instrument includes an analogue-over-range feature that,
when enabled, automatically switches the analysersanalogue output
to a pre-selected higher range.
Applications:
History:
Glossaries:
Indicative Multi Gas Analysers:
Gravimetric Particulate Analysers:
Real Time Particulate Analysers:
Odour Monitoring:
Software:
Mercury Gas Analysers:
Enclosures:
Multi Gas Stack Analysers:
Specialist Analysers:
Search:
Calibration:
ML 9810:
ML 9830: ML 9841: ML 9842: ML 9850: ML 9850 Hydrogen Sulphide:
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