• AII GPR-1200/3500

    Gemakkelijke tracering en meting van zuivere zuurstof
    De zeer nauwkeurige draagbare zuurstofanalysatoren van Analytical Industries zijn bedoeld voor toepassingen die op verschillende gedefinieerde meetpunten moeten worden gecontroleerd. Het GPR-3500-model heeft een compacte, robuuste behuizing en bevat roestvrijstalen onderdelen die in contact komen met de vloeistof, geïntegreerde debietmeters en naaldventielen. Het meet de zuiverheid voor inerte gassen, kooldioxide en zuurstof. De GPR-1200 compacte draagbare zuurstofanalyser voor sporen heeft een 4-wegklep die een gasmonster in de sensor opvangt. Dit maakt snellere zuurstofmeettijden mogelijk bij het verplaatsen van punt naar punt in een proces en beschermt ook sporenzuurstofsensoren tegen voortijdige uitputting als gevolg van blootstelling aan omgevingszuurstofniveaus om hun levensduur te verlengen. Dit alles zorgt voor een zuinige werking en lage eigendomskosten voor deze toonaangevende reeks draagbare zuurstofanalysers.
  • The air purifier CAP 15 and air purifier CAP 30 produces clean and hydrocarbon-free air out of normal compressed air. The Pt/Pd-catalyst convert by catalytical total-oxidation at 370°C all hydrocarbons inclusive methane (CH4) into carbondioxyde (CO2) and water (H2O). Hydrogen (H2) and carbonmonoxyde (CO) will be removed quantitatively.The produced air quality ist constantly free of hydrocarbons and better than sythetic air from gas bottles of class 5.0 (refering to organic components).On account of the high gas purity, the air purifier CAP 15/30 are used for FID-measuring systems as combustion air and as zero gas
  • ATEX in-situ oxygen analysers

    Ex-proof in situ zirconia oxygen analyzer for combustion control
    Ex-proof in situ zirconia oxygen analyzer for combustion control
    The oxygen measurement enables the control of burner fuel/air ratios to ensure combustion efficiency and process safety. Fuji Electric O2 Analyser is adapted to be installed in hazardous areas and to withstand critical environments as:
    • Refinery process heaters
    • Petrochemical reactor furnaces
    • Industrial large scale boilers
  • atmosFIR

    Multi-component FTIR gas analyser, measuring sub-ppm to low %Vol online
    atmosFIR is the successor to Protea's previous emissions monitoring FTIR systems, keeping all the features that users found valuable in achieving their measurement results, but offering the benefits of the new atmosFIR platform with increased portability, lower ownership costs and increased measurement performance. atmosFIR can be considered a simple multi-gas analyser for combustion gas measurements; indeed for some users that is all it will be and as such it provides a cost-effective and complete measurement system. However, for the expert user atmosFIR will offer all the benefits of FTIR, with hundreds of gas measurements, multiple analytical ranges, in-depth chemometric result diagnoses and dedicated on-board sampling system. With Protea's in-house chemometrics application support and 15+ year history of emission monitoring projects, atmosFIR offers the user the complete package for their monitoring needs. With long-lifetime VCSEL reference laser diode, unique cell design, and air cooled DTGS detector with 24-bit ADC, atmosFIR is a step-change in value and service lifetime for FTIR emission gas analysis.
  • atmosFIR CEM

    Continuous Emissions Monitoring FTIR
    atmosFIR CEM is a complete emissions monitoring system incorporating the atmosFIR 19” FTIR analyser. As completely hot and wet emissions measurement, atmosFIR CEM is ideal for complete measurement of multiple gases from applications such as incineration and power. A standard gas suite of NO, NO2, N2O, SO2, NH3, HCl, CH4, O2, CO2 and H2O is provided, but with the powerful FTIR analyser, further gases can be added easily in software. At the heart of system is the high-resolution, robust and proven FTIR spectrometer offering high signal throughput, low-noise and long lifetime of components. atmosFIR has been developed to incorporate the latest improvements and advantages in technology, The atmosFIR FTIR analyser contains an in-built sampling system and is designed for ppm-level emissions monitoring. The analyser can be used as a portable or bench-top unit as well as part of the installed CEM system.
  • atmosFIRt

    Draagbare multigas FTIR gasanalyser voor emissiemeting
    atmosFIRt is the latest generation of FTIR gas analyser technology from Protea in a portable or mobile form. The atmosFIR system improves upon previous FTIR technology and represents one of the most cost-effective and flexible analytical products on the market today. At the heart of atmosFIR is a high-resolution, robust and proven FTIR spectrometer offering high signal throughput, low-noise and long lifetime of components. atmosFIR has been developed to incorporate the latest improvements and advantages in technology.
  • atmosFIRw

    Wall-mounted multigas analyser for ambient air and process monitoring
    atmosFIR is the latest generation of gas analyser technology from Protea. The atmosFIR system improves upon previous FTIR technology and represents one of the most cost-effective and flexible analytical products on the market today. atmosFIRw has been designed to give a complete measurement system with embedded touchscreen controller. At the heart of atmosFIRw is a high-resolution, robust and proven FTIR spectrometer offering high signal throughput, low-noise and long lifetime of components. atmosFIRw has been developed to incorporate the latest improvements and advantages in technology, including:
    • Low cost of ownership and maintenance
    • Robust and light, including the latest in fabrication materials
    • atmosFIR combines an FTIR analyser with an in-built sampling system and embedded PC controller for a complete system
  • The heated sampling system is a combination of a heated sample line and a heated sample filter. The sample line is 500mm long; the filter element can be replaced very quick with the bayonet lock. Beside the very precisious and constant regulation of the line and filter temperature, there is a separate controll point fort he temperature at the filterinlet, where you have an information of the exhaust gas temperature. Also the calibration gas (prewarmed) can directly connected with the unit. The thermocouple is available as PT 100 or NiCrNi.
  • Backwash M1

    Filter Model iFiD
    The heated prefilter model iFiD Filter Backwash M1is a samplegasfilter which can flushbacked with an electronic solenoid valve. This valve can controll the pressure air (flushbackair) and the sample gas. The filter is very stable with the temperature level you preselect, and also in permanent use. In permanent use the maximum temperature is 200°C. The temperature is regulated in a range of +-1%.
  • Backwash M2

    Filter iFiD
    The heated prefilter model iFiD Backwash M2 is a samplegasfilter which can be flushbacked. The filter is very stable with the temperature level you preselect, and also in permanent use. In permanent use the maximum temperature is 200°C. The temperature is regulated in a range of +-1%.
  • CraNOx II

    NO, NO₂, NOₓ, O₃ - 1 ppb – 1’000 ppb
    SupremeLine Trace Gas Analyzer With CraNOx II, ECO PHYSICS is launching the second generation of its high-end measurement solution in the ppb and ppt range. The new system is smaller and more sophisticated, as it now has the power to calculate the photostatic equilibrium by means of the integrated ozone analyzer. The CraNOx II system is capable of simultaneously measuring NO, NOX, NO2 and O3. Furthermore, it can be expanded to assess NOY and NH3 concentrations.
  • Draagbaar systeem APS

    Draagbaar gasconditioneringssysteem

    The portable system is suitable for variable, discontinuous and continuous operation. The components built into the system can be used for standard applications. For special requirements please ask us for other solutions.

    The heated sample line is to be mounted at the gas measuring inlet terminal inside the portable case. A ball-valve can be fitted to the inlet terminal of the portable system in order to calibrate analyser(s) with check gas.

    The amount of flow is determined by a sample gas diaphragm pump. The sample gas pump AMP 11P is activated automatically by means of an excess temperature contact on the cooler.

    Optional flow meters with integrated needle valve are available. The flow meters are built-in as the electronic controller and are visible from outside when the carrying case is closed. This unique microprocessor controlled Peltier cooler is a powerful designed dew point stabiliser. The dew point is set at 4°C but can be changed at any value between 1°C and 15°C. The gas cooler is equipped with an innovative heat exchanger system.

  • Draagbare Gasmonstername Probe APP

    met verwarmd filter (180°C)

    Due to various acid dew points at various applications the probe is heated up to 180°C.

    A filter element of 150mm is integrated, suitable for most applications up to 1g dust/m3. A significant advantage is that this filter is replaceable without dismounting the probe. With the filter element of 150mm length this probe is suitable for most applications up to 1g dust/m3; with the blow-back function dust loads of up to 10g/m3 can be handled.

    Calibration gas can be injected directly into the probe through the calibration gas connection according to EN14181 (regulation for calibration of emission monitoring systems) that enables calibration gas feeding via the filter element of the gas sample probe. The use of the optional high-flow check valve type APP 200 is recommended.

    The portable gas sample probe series APP is a perfect completion to the Ankersmid portable gas conditioning system series APS 303/313. Both devices can easily be connected together by the Ankersmid heated sample line type AHL205/025 with the incorporated innovative Quick-Lock System which guarantees a fast and reliable connection.

    Using this heated line the probe's electrical power is then fed to the probe via the feed line integrated within the sample line. To avoid cooling-down and condensation of sample gas in the extraction area, the heated sample probe tube type AST 301 is available.

  • Fuji Electric Extractive Gas Analyzers for process control and continuous measurement of stack emissions. Their QAL1 certification guarantees high performance and regulatory and normative compliance. Reliable and precise, their design quality guarantees 24-hour operation in difficult environments such as smoke from industrial chimneys. Robustness reduces maintenance costs and increases the availability of boilers and equipment. Extractive measurement consists of taking a gas flow from the chimney or the gas pipe via a sampling probe and conveying it to the gas analyzer. The gas is sampled, treated in order to ensure optimal conditions for gas measurement.
  • FDS 15

    real-time measurement (PM10 or PM2.5)

    Optical sensor for continuous measurement and monitoring of fine dust contents indoor and outdoor.

    • optical sensor for continuous measurement and monitoring of fine dust concentrations (PM10, PM2.5)
    • smart, robust, network-capable
    • simple unit design
    • installation without any special tools
  • FDS 17

    simultaneous real-time measurement of PM10/ TSP and PM2.5
    • optical sensor for continuous, simultaneous measurement and control of fine dust contents PM10/TSP and PM2,5
    • patented zero point control by electrostatic precipitator
    • smart, robust, network-capable
    • simple unit design
    • installation without any special tools
  • FDS 17 m

    Simultane real-time meting van PM10 & PM2.5
    • simultaneous real-time measurement of PM10 & PM2.5
    • based on optical sensor, active suction & patented electrostatic precipitator for zero point setting
    • flexible use - indoors & outdoors -
    • portable case with offline power supply by power bank
    • including data logger for storage of measuring values
  • FDS 18

    Real-time measurement of PM2,5 
    • real-time measurement of PM2,5
    • Monitoring of fine dust concentrations in ambient air and/or at workplaces
    • optical sensor including fitting with clip system, therefore easily exchangeable
    • active and automatic zero point setting
    • active air suction
    • Integrated pre-separator for particles > 2,5 µm
    • noiseless operation
    • network-compatible
  • FID 1230 IH

    The flame-ionization-detector 1230 IH for continuous high temperature (400°C) monitoring of THC

    High-Temperature Analyzer for Exhaust gas measurement

    The flame-ionization-detector 1230I-H can measure the sum of total hydrocarbon concentrationin applications like cold starts of engines (down to–40°Cambient temperature), inwoodburning systems and also at engine test units (especially oil-and gasburners, airplaneengines etc.) Our high temperature heated lines with a operation temperature of 400°C are made additionally for measurements of highboiling hydrocarbons. For the sample-gas pickup we have built some prefilters who are able to hold back the tar compounds.
  • FID 1230 Module

    Vlam-Ionisatie-Detector 1230 Module voor continue monitoring van CxHy

    19" rack version Flame-Ionisation Detector FID 1230

    The Flame-Ionisation-Detector FID1230 Module measures Total Hydrocarbons in a wide range of applications like catalytic - and thermal oxidiser plants, waste gas processing plants, room and environmental air, solvent recovery plants and vehicle exhaust gases. The monitoring is continous with a high accuracy. Because of the module system, there is an optimal configuration for every measurement-task under profit aspects possible. All modules can be fit in at any time.
  • FID 1230 NMHC

    Methane only / CxHy monitoring system (Change-over switch)
    Methane only / Total Hydrocarbon THC monitoring system (Change-over switch) The 19” Flame-Ionisation-Detector (FID) 1230NMHC measures with its built-in NMHC-Cutter the methane concentration (methane only) and after switching to THC in a wide range of applications like stack gas emissions monitoring, ambient air monitoring, thermal reactor and combustor emissions monitoring and also vehicle exhaust gases. The monitoring is continous with a high accuracy, sensitivity and stability.
  • FID 2000 MP

    Analytical section heated on 200°C
    The Flame-Ionisation-Detector (FID) 2000 MP measures the concentration of Total Hydrocarbons in a wide range of applications like all kind of emission control, catalytic- and thermal oxidiser plants, waste gas processing plants, room and environmental air (immissions), solvent recovery plants and vehicle exhaust gases. The monitoring is continous with a high accuracy.
  • FID 2000MP SHED

    Connection for 4 calibration gases

    Mini/Micro-SHED

    The Flame-Ionisation-Detector (FID) 2000 MP measures the concentration of Total Hydrocarbons in SHED-chambers of different sizes. For applications beginning of 2,5m3 we recommend to measure in a heated circular system to get a response time near to real changes of concentration in the chamber. For smaller chambers, we have developed a special FID-analyzer with a sample flow of 12ml/min. These two types of analyzers optimizethe air change rateover the extraction rate.
  • FID 2010 NMHC

    Draagbare Methaan/CxHy Analyser

    Methaan/THC Analysator

    De draagbare verwarmde FID 2010 NMHC van TESTA meet met zijn ingebouwde NMHC-cutter de methaanconcentratie (alleen methaan) en na overschakeling op een ander kanaal ook de THC in een breed scala aan toepassingen zoals bewaking van schoorsteengasemissies, bewaking van omgevingslucht, monitoring van thermische reactor- en verbrandingsemissies en ook uitlaatgassen van voertuigen. De monitoring is continu met een hoge nauwkeurigheid, gevoeligheid en stabiliteit. Alle componenten die in contact komen met het monster worden volledig verwarmd op 200°.
  • FID 2010 T

    Draagbare Vlam-Ionisatie-Detector FID 2010T voor continue monitoring van CxHy - Classic Line

    Total Hydrocarbon Analyser

    The Flame-Ionisation-Detector 2010 T measures Total HydroCarbon (THC) in a wide range of applications like catalytic- and thermal oxidiser plants, waste gas processing plants, room and environmental air, solvent recovery plants and vehicle exhaust gases.By it`s little weight and it`s compact dimensions, he is especially made for daily changing measuring points or shorttime measurings campains.
  • FID 3001W

    Analytical section heated on 300°C

    Wall mount Flame-Ionisation-Detector 3001W

    The Flame-Ionisation-Detector 3001W measures Total Hydrocarbons in a wide range of applications like catalytic - and thermal oxidiser plants, waste gas processing plants, room and environmental air, solvent recovery plants and vehicle exhaust gases. Because of its swingable housing, there is an easy installation and optimal accessibility guaranteed. This wallmounted analyser is a compact, robust weatherproofed version. The environmental protectionmode is IP65.
  • The heated prefilter model iFiD Filter is a gasfilter for the high temperature applications who need a permanent temperature up to 300°C. The filter is very stable with the temperature level you can preselected. In permanent use the maximum temperature is 300°C. The temperature is regulated in a range of +-1%.
  • The filterinlet model iFiD Filter is a flashbackable filterunit for all heated Testa Samplegasfilters. The filter is usable for exhaust gas from engines as well as for emmission measuring tasks.
  • Microventuri based continuous monitoring of flue gas flow rate, pressure and temperature
    Designed for tough industrial applications with highly dusts loaded fl ue gas.
  • Flue Gas Humidity Monitors Delta-O2

    In-situ or extractive O2 + H2O monitors
    Continuous measurement of humidity in highly dusts loaded flue gas through dry and wet zirconia oxygen measurements. In-situ or extractive O2 + H2O monitors depending on the application. Perfect for combustion control of biomass boilers : industrial boilers, district heating.
    O2 DRY  -  O2 WET -  H2O
  • GMD 12

    Gravimetrisch meetsysteem
    • intelligent system for isokinetic dust and fine particles measurements in exhaust air ducts and stacks
    • acquisition of all necessary gas boundary parameters (humidity of the sample gas, velocity in exhaust gas channel, temperature, pressure)
    • pivotable graphic display for more convenient operations
  • GMD 13

    Gravimetrisch meetsysteem
    • patented world innovation: Sampling and weighting in one system on site!
    • intelligent system for isokinetic dust and fine particles measurements in exhaust air ducts and stacks
    • acquisition of all necessary gas boundary parameters (humidity of the sample gas, velocity in exhaust gas channel, temperature, pressure)
    • pivotable graphic display for more convenient operations
  • GPR 1600/2600/3100

    Percent and PPM O2 Monitoring in Bulk Gases
    Ons assortiment zuurstofanalysatoren is ontworpen om gas te bewaken dat wordt geproduceerd of gebruikt in industriële processen waar zuurstofspoor van lage deeltjes per miljoen tot pure O2 nauwkeurig moet worden gemeten. Door gebruik te maken van de hoogwaardige galvanische zuurstofsensoren van AII zijn deze geavanceerde instrumenten eenvoudig te gebruiken met een gemeenschappelijke HMI en menustructuur voor het hele bereik. Operators hoeven slechts één instrument te leren voor meerdere gasanalysetoepassingen bij verschillende zuurstofniveaus. Verkrijgbaar als bench-, 19 "rack-, panel- en wandmontage voor flexibele installatie.
  • GPR-1000/1100/2000/ 3500 MO

    Voor steekproeven ter plaatse van PPM tot 100% zuurstof
    Deze robuuste draagbare instrumenten zijn geschikt voor sporen zuurstofmetingen van 0,1 ppm tot zuiverheid toepassingen bij 100% zuurstof en delen dezelfde geavanceerde sensortechnologie als de online proces zuurstof analysatoren, waardoor u kunt vertrouwen op hun betrouwbaarheid en nauwkeurigheid. Het concept van Analytical Instruments, waarbij dezelfde HMI en menustructuren worden gebruikt voor draagbare en online analysers, maakt het voor operators uiterst eenvoudig om beide soorten instrumenten op hun locatie te gebruiken zonder dat er extra training nodig is.
  • Heated Prefilter

    Model iFiD Filter XL
    The heated prefilter model iFiD FIlter XL is a samplegasfilter for the high temperature applications with a permanent temperature of 300°C. The filter is very stable with the temperature level you preselect, and also in permanent operation. In permanent use the maximum temperature is 300°C. The temperature is regulated in a range of + 1%.
  • Heated solenoid valve

    for SHED chamber

    Modell iFiD SHED

    The heated solenoid-valve prevents dilution or increase of the measurement gas concentration by giving up zero gas as well as test gas during or before the shed test measurement.
  • The heated transferline is made of a stainless steal tube with soldered heater. This construction is unique in relation to other lines and is guarantee for a very good heattransfer. Especially in cases of alternating process temperatures, the sample temperature can stabilized at preselected level. A Low-Cost-Version is available with simple teflon hose.
  • Hydrogen Analysers

    Thermal Conductivity Gas Analyser ZAF and ZAFE
    Reliable process control for furnaces, metal industry, semiconductor and gas separation. The analyser continuously measures the concentration of gases such as H2, He, and Ar with high stability. It is also available in a version for hazardous areas (for countries outside the European Union): ZAFE certified Ex NEPSI.
  • iFID Dual

    Continuous monitoring of two parallel channels

    19" RackFlame-Ionisation-Detector iFiD Rack for continuous monitoring of 2 channels parallel

    The stationary Flame-Ionisation-Detector iFiD Dual is designed for measuring at two points with one unit. This saves money in comparison to a 2 unit solution. The channels are separated from each other and so you can permanently measure high and low concentrations paralell without switching procedure.
  • iFID Mobile

    Draagbare Vlamionisatiedetector voor continue CxHybewaking

    Draagbare Vlamionisatiedetector

    De vlamionisatiedetector (FID) meet de totale koolwaterstofconcentratie in industriële en laboratoriumomgevingen. Door zijn lichtgewicht en compacte afmetingen is hij speciaal gemaakt voor dagelijks wisselende meetpunten of kortstondige metingen.
  • iFiD NMHC

    The stationary Flame-Ionisation-Detector
    The stationary Flame-Ionisation-Detector (FID) iFiD NMHC measures with its built in NMHC Cutter the methane concentration and parallel in a second channel also the THC in a wide range of applications like stack gas emissions monitoring, ambient air monitoring, thermal reactor and combustor emissions monitoring and also vehicle exhaust gases. The monitoring is continous with a high accuracy, sensitivity and stability. All components which come in contact with sample are fully heated at 200°.
  • iFiD NMHC Mobile

    The stationary Flame-Ionisation-Detector

    19" RackFlame-Ionisation-Detector iFiD Rack for continuous monitoring

    The stationary Flame-Ionisation-Detector (FID) iFiD RACK is designed for stack monitoring, process control and also for VOC measurement. The whole gaspath is heated to 300°C and so we can speak from a Hightemperature-FID.
  • iFiD Rack

    19" rack vlamionisatiedetector voor continue CxHy bewaking

    19" Rack vlamionisatiedetector voor continue CxHy bewaking

    De stationaire vlamionisatiedetector (FID) iFiD Rack is ontworpen voor stack monitoring, proces controle alsook voor VOC meting. Het volledige gaspad is verwarmd op 300°C, vandaar we kunnen spreken van een hoge temperatuur FID.
  • iFID Shed

    19" Rack Flame-Ionisation-Detector iFiD SHED for continuous monitoring

    19" Rack Flame-Ionisation-Detector iFiD SHED for continuous monitoring

    The stationary Flame-Ionisation-Detector (FID) iFiD SHED was designed as a 19" Rackunit. This analyzer is designed to measure volatile organic compounds in different sized SHED-chambers. The device is available in a bypass circuit version and an extraction version. The special advantage of the extraction version is a sample flow of only 12-15ml per minute. The whole gaspath is heated to 200°C and with its unique Pyrolysis cleaning system you can clean easily and save service costs.
  • iFID Wall

    Outdoor Vlamionisatiedetector iFiD voor continue CxHy bewaking

    Outdoor Flame-Ionisation-Detector iFiD Mobile for continuous monitoring

    The stationary Flame-Ionisation-Detector (FID) iFiD Wall is made for rough conditions and field installations. This unit measures the Total Hydrocarbon concentration especially in heavy industrial environment or freeair installations with small weatherprotection. The stainless steelhousing with a protection class IP65 gives the analyser a strong shelter all year long.
  • In-situ zirconia oxygen gas analysers

    Fast response (4–7 seconds)
    Optimization of combustion efficiency and compliance with environmental standards Ideal for combustion control in boilers, incinerators and furnaces. Lowering CO₂, SOx, and NOx emissions while saving energy This oxygen analyser is used to continuously measure oxygen concentration in combustion exhaust gas of industrial boilers or furnaces, and is ideally suited for combustion management and control, such as garbage incinerators and smallest to largest sized boilers, as combustion controllers, achieving a significant energy-saving effect.
  • LabAnalyzer 254

    0.01 ppb ... 10 ppb (10 ng/l to 10 µg/l)
    Rapid mercury determination in the laboratory
    • Firmly adjusted optical system not requiring any adjustment
    • Short analysis times
    • Low reagent consumption
    • Automatic zero adjustment
    • For analyses according to DIN 38406-12 / EPA 7470A / EPA 7471A)
    • Measuring range: 0.01 ppb ... 10 ppb (10 ng/l to 10 µg/l)
    • Hg trap: Mercury vapors cannot escape into the lab
    • Upgradable to VM-3000 Mercury Vapor Monitor
  • LaserDust

    Compacte optische in-situ stofmonitors
    LaserDust™ Medium Path (MP), Long Path (LP) en Extra Long Path (XLP) monitoren zijn compacte, optische stofmonitors voor echte continue in-situ meting van stofconcentratie of opaciteit. De monitoren zijn ontworpen voor metingen over pijpen, schoorstenen en kanalen met typische padlengtes van 0,5 – 10 m. LaserDust™-monitoren gebruiken een zender/ontvangerconfiguratie om de stofconcentratie langs de optische zichtlijn te meten. Onze echte contactloze benadering is superieur aan stofmeters van het punttype. Met innovatieve lasertechnologie combineert de LaserDust™ twee meetprincipes in één instrument.
    • Bij lage stofniveaus werkt het met voorwaartse strooilichttechnologie: Het invallende laserlicht wordt verstrooid door stofdeeltjes en verzameld op een solid-state sensor voor stofkwantificering. Deze zeer gevoelige modus maakt detectiegrenzen van < 0,5 mg/Nm3 mogelijk en wordt niet beïnvloed door stofafzetting op de vensters.
    • Bij hoge stofniveaus meet de LaserDust™ de doorlaatbaarheid of opaciteit: Lichtabsorptie door stofdeeltjes wordt opgevangen door een 2e sensor.
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