Compact air
quality monitoring

Flexible at
point of interest

Modular configuration

airpointer® – air quality monitoring

The airpointer‘s modular design comprising a base unit, analyzing modules and sensor modules allows for a configuration according to different application requirements.

The airpointer‘s compact design enables it to be installed almost everywhere. Due to its optimized thermal management, the airpointer consumes less power compared to conventional monitoring stations.

The airpointer offers a choice of analysis modules using type approved reference methods for monitoring airborne pollutants (SO2, NO2/NOX, CO, O3, and PM) classified as relevant by the EU, the WHO, the US-EPA and further responsible organizations all over the world.

A fast optical system or an approved PM analyzer is used for monitoring PM.

The integrated data management systemrecords monitoring data of the airpointer‘s own analysis modules as well as various external third-party sensors.

An internal web server enables data retrieval by using any Internet connection. Data are available worldwide via access authorisation and can be presented in clearly arranged graphics. All parameters can be displayed locally or online.

airpointer base units

airpointer 2D – airpointer 4D – airpointer +PM

air quality monitoring system
  • airpointer 2D
  • airpointer 4D
  • airpointer +PM

2 of Pollutants Standard modules

Dimensions (H/W/D, w/o handle and sample inlets) 890/782/400 mm35/30.8/15.8 in.
Weight 65.8 kg/145.1 lbs
Power consumption* max. 670 W
Flow <2000ccm/min +2000 ccm/min for nephelometer
  • Construction:
    Well-isolated double aluminium constructionStandard monitoring modules on removable drawers
    Rugged, inconspicuous burglar-proof design
  • Standard equipment:
    Internal air conditioning and temperature control
    Maintenance door
    Cylinder lock (standard)
    Zero air supply
  • Operating temperature
    -20 °C/-4°F to +42 °C/108°F (optional heating for down to -40 °C/-40°F)
  • Options
    Various types of mounting bracketsWireless communication (GPRS, 3G,…)
    Sample gas conditioning (high relative humidity, high PM exposure)
    Integration of external devices and instruments (e.g. 4-20 mA, RS-232, Modbus via IP,…)
    Solutions to communicate with external data systems (e.g. TCP-IP, Modbus via IP, RS-232, 4-20 mA,…)
    Various base frames and handling devices for on-site operation (roadside, workshop, indoor, pickup truck, trailer,…)

4 of Pollutants Standard modules

Dimensions (H/W/D, w/o handle and sample inlets) 1120/782/400 mm
44.1/30.8/15.8 in
Weight 73.9 kg/162.9 lbs
Power consumption* max. 670 W
Flow <3000ccm/min +2000ccm/min for nephelometer
  • Construction:
    Well-isolated double aluminium constructionStandard monitoring modules on removable drawers
    Rugged, inconspicuous burglar-proof design
  • Standard equipment:
    Internal air conditioning and temperature control
    Maintenance door
    Cylinder lock (standard)
    Zero air supply
  • Operating temperature
    -20 °C/-4°F to +42 °C/108°F (optional heating for down to -40 °C/-40°F)
  • Options
    Various types of mounting bracketsWireless communication (GPRS, 3G,…)
    Sample gas conditioning (high relative humidity, high PM exposure)
    Integration of external devices and instruments (e.g. 4-20 mA, RS-232, Modbus via IP,…)
    Solutions to communicate with external data systems (e.g. TCP-IP, Modbus via IP, RS-232, 4-20 mA,…)
    Various base frames and handling devices for on-site operation (roadside, workshop, indoor, pickup truck, trailer,…)

2 of Pollutants Standard modules
Type approved PM10 or PM2.5 monitor (Thermo 5030 SHARP, Met One BAM1020)

Dimensions (H/W/D, w/o handle and sample inlets) 1200/782/615 mm
47.2/30.8/24.2 in.
Weight 110 kg/242.5 lbs
Power consumption* max. 1100 W
Flow  <2000ccm/min +16.7l/min for PM monitor
  • Construction:
    Well-isolated double aluminium constructionStandard monitoring modules on removable drawers
    Rugged, inconspicuous burglar-proof design
  • Standard equipment:
    Internal air conditioning and temperature control
    Maintenance door
    Cylinder lock (standard)
    Zero air supply
  • Operating temperature
    -20 °C/-4°F to +42 °C/108°F (optional heating for down to -40 °C/-40°F)
  • Options
    Various types of mounting bracketsWireless communication (GPRS, 3G,…)
    Sample gas conditioning (high relative humidity, high PM exposure)
    Integration of external devices and instruments (e.g. 4-20 mA, RS-232, Modbus via IP,…)
    Solutions to communicate with external data systems (e.g. TCP-IP, Modbus via IP, RS-232, 4-20 mA,…)
    Various base frames and handling devices for on-site operation (roadside, workshop, indoor, pickup truck, trailer,…)

Pollutants Standard modules

Pollutant Weight
NO/NO2/NOX Weight: 12.0 kg/26.5 lbs optional: span module
NH3 Only combined with NOX module
O3 Weight: 5.8 kg/12.8 lbs,optional: span module
SO2 (H2S) Weight: 8.5 kg/18.7 lbs,optional: span module; optional: H2S module
CO Weight: 9.0 kg/19.8 lbs,optional: span module

More sensor modules

  • Photoionisation detector (PID) for volatile organic compounds (VOC)
  • Nephelometer for indicative PM monitoring (PM10, PM2.5)
  • Meteorological sensors: wind direction, wind velocity, temperature, air pressure, relative humidity, precipitation, made by various manufacturers
  • Traffic data sensors: traffic count, made by various manufacturers
  • Noise sensors, made by various manufacturers
  • Electrochemical sensors for formaldehyde, ethane, chlorine…
  • For industrial applications, environmental hygiene, and indoor air quality monitoring (IAQ)
  • Sensors for monitoring indoor CO2 (IAQ)
  • Navigation system (GPS) for linking monitoring data with geographical data
air quality monitoring system

Personalize your airpointer

The airpointer is delivered in an unobtrusive design and can therefore blend in with its surroundings. By designing the front of the airpointer as you like you can purposely make it conspicuous or use it as advertising space.

air quality monitoring system

QA/QC

Many years of security, reliability and continuity
The airpointer has been developed by experts with field experience with special emphasis placed on data quality assurance. recordum quality management is certified for research, development and production in accordance to ISO 9001:2008 standards.
Only a minimum amount of maintenance is necessary to continuously guarantee the quality of the measurement data. The filter, absorbent and zero air cartridge should be checked regularly while the device is operating. The modules and electronics must be checked once a year. The airpointer is equipped with a large number of functions for controlling and maintaining operation, which are easy to use, clearly displayed, and quickly implemented.

Calibration
A span gas port in the maintenance door is provided for calibrating the airpointer with external span gas. The user does not have to open the front door thus leaving the temperature inside unaltered. The airpointer is calibrated using a graphic interface in the user menu, which displays the parameters to be calibrated in a concentration-time-diagram. Thus the user may evaluate stability of both measurement signal and span gas concentration. After calibration, the airpointer displays a message indicating whether or not the calibration was successful. The calibration data are saved and can be retrieved at any time.

Software
A user network connection (RJ45) located behind the maintenance door is provided for local operation and monitoring of all device functions. Extensive diagnostic functions included in the software are used to continuously monitor all key operating parameters and save them once a minute in the system data base for preventive fault detection and tracking the effect of faults on measurement data.
A separate program (watchdog) additionally controls correct operation and automatically repairs any faults that may occur. Changes of site, calibrations, faults and their remedies etc. can be entered in an electronic station logbook. You may further increase data security by using an automatic backup with the recordum portal independent of the airpointer.

Operational test
Each airpointer features internal zero air generation for automatic or manual zero point check of each module. You may individually select a zero point check or an automatic adjustment.

You may optionally check all gas ambient air analyzer modules individually using internal span gas generation and the following methods.

  • Ozone:
    An ozone generator generates a constant sample flow of ozone using a UV lamp.
  • Carbon Monoxide:
    Span is generated using a refillable calibration gas
    cylinder and an internal dilution system.
  • Nitrogen Dioxide, Sulfur Dioxide/Hydrogen Sulfide:
    A permeation tube contains the condensed airborne pollutant in liquid form and releases it at a constant high temperature (ensured by a controlled oven) via a membrane.

The user may track at all times the results of the internal operational test that are saved in the airpointer database.

Filter changing
The filter holder is also located in the vicinity of the maintenance door. The filter holder features a glass plate to check the cleanliness of the filter and if it is properly seated. An optional extended lifetime filter with a greater volume extends the intervals between filter changes.

analysis modules

  • Nitrogen Oxides
  • Ozone
  • Sulfur
  • Carbon Monoxid
  • Additional Sensors
nox monitoring

What is Nitrogen Oxide?

The nitric oxide (NO) molecule is quite reactive and unstable. In ambient air, it reacts with oxygen to form the toxic nitrogen dioxide (NO2).

Where does Nitrogen Oxide come from?

Nitrogen oxide is mainly an unwanted by-product of fuel combustion at high temperatures. Cars and power plants are the main sources of nitrogen oxide.

 What are the effects of Nitrogen Oxide?

Nitrogen oxide causes a multitude of symptoms, primarily in the lungs but also in other organs such as the spleen and liver. Additionally, nitrogen oxide is jointly responsible for acidification and over-fertilisation of soil and water. Gaseous nitrogen oxide may become particulate ammonium nitrate. This contributes to large-scale PM (PM2.5, PM10) pollution. During the summer, nitrogen oxide and hydrocarbons cause formation of ground-level ozone and destruction of the ozone layer.

Measurement Principle:
Chemiluminescence (EN14211)

Nitric oxide in sample gas reacts with ozone to form nitrogen dioxide. This reaction results in electrically excited molecules. These molecules release their excess energy by emitting photons, which are measured by a photomultiplier tube. The airpointer NOX module is equipped with a delay loop to measure NO and NO2 from the same sample.

Zero Air Supply Check and Span Point Check

Zero air supply is part of the standard equipment so that a zero point check may be carried out automatically (e.g. daily).
An internal NO2 source for a regular span point check is available as an option.

Measured Compound Nitrogen Oxides NO/NO2/NOX
EU Directive / USEPA Procedure Chemiluminescence (EN14211)
Measurement principle Chemiluminescence
Range Dynamic, up to 20 ppm
Zero noise 0.2 ppb RMS
Lower detection limit 0.4 ppb
Zero drift (24 hours) < 0.4 ppb
Span drift (24 hours) +/- 1% of reading > 100 ppb
Response time < 60 seconds
Precision 1% of reading or 1 ppb (whichever is greater) @ < 500 ppb ±1% of reading >100 ppm
Linearity +/- 1% of reading >100ppm
Sample flow rate 1000 ml/min
Weight 12.0 kg/ 26.5 lbs

o3 monitoring

What is Ozone?

Ozone (O3) is a highly toxic corrosive substance and a common pollutant. In low concentration it is a normal component of ambient air. Highly concentrated it is an aggressive irritant gas and at ground level it affects humans and nature.

Where does Ozone come from?

Ozone is formed in the atmosphere by reaction of nitrogen oxides, hydrocarbons, and sunlight. Ozone protects us in higher air layers (stratosphere) from harmful UV radiation. At ground level, higher ozone concentrations form only by other pollutants (ozone precursor chemicals) and sunlight. Nitrogen oxides and volatile organic compounds are the main precursors. Furthermore, methane and carbon monoxide (CO) contribute to the global formation of ozone. Insolation promotes the formation of ozone. High ozone concentrations thus occur mostly at midday and in the afternoon. Major sources of ozone are the chemical processes caused by industry and traffic as well as electrical current of television sets, computers, photocopiers, and electric motors (using brushes).

What are the Effects of Ozone?

Ozone causes above all respiratory ailments such as respiratory syndromes, changes in pulmonary function, increased respiratory sensitivity, and inflammation of the respiratory tract. Ozone additionally destroys the foliage of trees and other plants (photooxidation), thus aggravating the environment.

Measurement Principle:
UV absorption (EN 14625)

A beam from a high-energy UV lamp is directed through a tube filled with sample gas. Absorption effected by ozone is measured with a detector at the end of the tube.

Zero Air Supply Check and Span Point Check

Zero air supply is part of the standard equipment, so that a zero point check may be carried out automatically (e.g. daily).
An internal ozone generator for a regular span point check is available as an option.

Measured Compound Ozone O3
EU Directive / USEPA Procedure UV photometry (EN14625)
Measurement principle UV photometry
Range Dynamic, up to 20 ppm
Zero noise 0.25 ppb RMS
Lower detection limit 0.5 ppb
Zero drift (24 hours) < 1 ppb
Span drift (24 hours) ±1% of reading or 1 ppb (whichever is greater)
Response time < 30 seconds
Precision 1 ppb
Linearity +/- 1% of reading > 100 ppb
Sample flow rate approx. 1000 ml/min
Weight 5.8 kg/12.8 lbs,

SO2 monitoring

Sulfur Dioxide

What is Sulfur Dioxide??

Sulfur dioxide (SO2) is an acid-forming, colorless, foul-smelling and toxic gas.

Where does Sulfur Dioxide come from?

SO2 mainly comes from burning coal and heavy fuel oil.
Major sources are firing systems in energy business, in industry, and small-scale heating systems that use poor quality sulfurous oil or coal.

What are the Effects of Sulfur Dioxid?

Sulfur dioxide may cause humans to suffer from headaches, nausea, reductions in pulmonary volume, increases in breathing resistance, and symptoms such as wheezing, chest tightness, and shortness of breath. Sulfur dioxide is one of the major „acid rain“ precursors which compromises ecological systems such as forests and lakes as well as it accelerates corrosion of buildings and monuments. Sulfur dioxide may reduce visibility as part of smog.
Furthermore, particulate sulfate adds to large-scale PM (PM2.5, PM10) pollution.

Measurement Principle:
UV Fluorescence (EN14212)

Sample gas is lighted with an UV lamp, which causes the SO2 molecule to absorb energy. The absorbed energy is emitted as a light pulse (photon) which is measured with a photo multiplier.

Zero Air Supply Check and Span Point Check

Zero air supply is part of the standard equipment, so that a zero point check may be carried out automatically (e.g. daily).
Internal SO2 sources for a regular span point check are available as an option.

Measured Compound Sulfur Dioxide SO2 and Hydrogen Sulfide (H2S)
EU Directive / USEPA Procedure UV Fluorescence (EN14212) – for SO2
Measurement principle UV Fluorescence
Range dynamic, up to 10 ppm
Zero noise 0.25 ppb RMS
Lower detection limit 0.5 ppb
Zero drift (24 hours) < 1 ppb
Span drift (24 hours) ±1% of reading >100 ppb
Response time < 90 seconds
Precision 1% of reading or 1 ppb (whichever is greater)
Linearity ±1% of maximum >100 ppb
Sample flow rate 500 ml/min
Weight 8.5 kg/18.7 lbs,

Hydrogen Sulfide

What is Hydrogen Sulfide??

Hydrogen sulfide (H2S) is a highly toxic and corrosive, nauseously smelling gas.

Where does Hydrogen sulfide (H2S) come from?

H2S is a gas that results from biodeterioration and biodegradation. Major sources are refineries, furnaces, pulp and paper industry, gasworks, coking plants, sewage plants, and biogas plants

What are the Effects of Hydrogen Sulfide?

H2S destroys the body’s own hemoglobin and paralyses oxygen transport in blood. When it comes in contact with mucous membrane, it converts to form alkaline sulfides and causes eye, nose, throat and lung irritations. Its high acidity makes H2S a corrosive gas and may cause damage to electronic components.

Measurement Principle:
Thermal conversion to SO2

SO2 is scrubbed from the sample gas. H2S is thermally converted to SO2 and measured by UV fluorescence. Equipped with an H2S module the airpointer measures only H2S or only SO2 or both cycling with a minimum switching time of five minutes.

Zero Air Supply Check and Span Point Check

Zero air supply is part of the standard equipment, so a zero point check may be carried out automatically (e.g. daily).
Internal H2S sources for a regular span point check are available as an option

CO monitoring

What is Carbon Monoxide??

Carbon monoxide (CO) is an extremely toxic gas resulting from incomplete combustion of carbon and carbonaceous products.

 Where does Carbon Monoxide come from?

Carbon monoxide is mainly a product of incomplete combustion of fuel and propellants. Major sources are traffic, industry and smoking indoors.

What are the Effects of Carbon Monoxide?

CO as pollutant is especially significant because of its toxic effect to humans (damaging hemoglobin). Furthermore CO plays a significant role for photochemical generation of ground-level ozone on a global scale.
A certain concentration may reduce the amount of oxygen received by a person’s brain. The person may lose conscience or suffer permanent brain damage caused by lack of oxygen. Carbon monoxide may also contribute towards global warming.

Measurement Principle:
NDIR Gas Filter Correlation (EN14626)

An infrared source beam is directed through a chamber filled with sample gas. Carbon monoxide absorbs this light. A photo-detector measures the emanating decrease.

CO Scrubber Check and Span Point Check

A „CO scrubber“ (catalytic converter) removes CO from the sample, so a zero point check may be performed automatically (e.g. daily).
An internal CO source for a regular span point check is available as an option.

Measured Compound Carbon Monoxide CO
EU Directive / USEPA Procedure NDIR gas filter correlation (EN14626)
Measurement principle NDIR gas filter correlation
Range Dynamic, up to 1000 ppm
Zero noise 0.02 ppm RMS
Lower detection limit 0.04 ppm
Zero drift (24 hours) < 0.1 ppm
Span drift (24 hours) ±1% of reading >10 ppm
Response time < 60 seconds
Precision ±0.1 ppm
Linearity ±1% of reading < 1,000 ppm
Sample flow rate approx. 500 ml/min
Weight 9.0 kg/19.8 lbs

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Additional airpointer Sensors

Apart from the already installed modules the airpointer offers capabilities for implementing additional sensors and external instruments using the high performance airpointer data recording. These sensors are integrated via Ethernet, RS-232 or analog interfaces. Additional sensors are mounted outside or inside the airpointer depending on the space available.

The airpointer continuously manages and controls measurement data via a web based user interface. The high-performance airpointer features can be used for each additionally implemented sensor. This includes data recording over a period of several years, data backup and faster data access via the recordum portal, data download for local analyses and more.

 

Road traffic and public places

  • Noise level
  • Pedestrian counts
  • PM sampling
  • PM monitoring
  • Navigation systems (GPS)
  • UV radiation

 Indoor air quality

  • Carbon monoxide (CO2)
  • Oxygen (O2)
  • Relative humidity
  • Temperature
  • Light intensity

 Industrial hygiene

  • Toxic gases
  • Volatile organic compounds (VOC)

Particulate Matter

What is Particulate Matter??

PM10 and PM2.5 are not single components but the mass concentration of all ambient air particles with an aerodynamic diameter smaller than 10 µm (PM10) or 2.5 µm (PM2.5).

Where does Particulate Matter come from?

Thresholds of these pollutants are frequently exceeded, especially in areas with strong vehicle traffic air pollution. This leads to an increased public awareness of PM issues.
Particulate matter comes from diesel exhaust particles, tire wear, brake dust, and swirling road dust generated by vehicle traffic.

What are the Effects of Particulate Matter?

PM2.5 and PM10 have a short-term effect on the cardiovascular system. Evidence of a direct relation between the number of heart attacks and PM concentration has been substantiated. For instance, a long-term effect of PM pollution is the potential to carry and hold toxic compounds in the respiratory system. Particles in lungs and bronchia weaken the immune system.

Measurement Principle:
Nephelometry

The airpointer PM module uses nephelometry, the proven optical method of measurement. A sample heater minimizes the effects of humidity. The module uses a light-scattering photometer with a near-IR LED, a silicon detector hybrid preamplifier and a reference detector. The scattered light is proportional to PM concentration.

Size selection

A TSP inlet is part of the standard equipment of the PM module. Simply change the optionally available size-selective inlets to measure PM10 or PM2.5

Measured Compound Particulate Matter
EU Directive / USEPA Procedure Particle collecting and gravimetric analysis
Measurement principle Nephelometry
Range Dynamic, up to 2,500 µg/m³
Zero noise
Lower detection limit < 1 μg/m3
Zero drift (24 hours) < 1 μg/m3
Span drift (24 hours) ±1% of reading
Response time < 60 seconds
Precision 1 μg/m3
Linearity
Sample flow rate 2 l/min
Weight

airpointer +pm

The airpointer +PM can be equipped with an approved PM analyzer. Furthermore, you may connect the airpointer to an external PM analyzer by using the available interfaces. Thus you may as well use the airpointer’s advantages especially within data recording and data transfer for measuring PM.

Measurement Principle:
Beta Ray Attenuation

Beta ray attenuation is a radiometric measurement. The particles are deposited on a filter belt and exposed to beta radiation. Varying beta absorption during sampling defines the mass of the deposited particles.

Measured Compound Particulate Matter
EU Directive / USEPA ProcedureMeasurement principle  Particle collecting and gravimetric analysisBeta ray attenuation
 Radiation source  14C (Carbon14) 60 µCi ±15 µCi, half-life of 5730 years
 Range  Dynamic, up to 1.000 mg/m³
 Lower detection limit (24 hours)  < 1 μg/m3
 Zero drift (24 hours)  < 1 μg/m3
 Resolution  0.1 µg/ m3
 Sample flow rate  16.7 l/min

recordum operation system

We serve the perfect software for your needs:

Setup

Recordum OS setup

Setup is used for settings in general. Here you may enable or disable the various modules and change units such as ppb and µg/m³.

Time Diagramm

Time Diagramm

One to six parameters are displayed in a clearly arranged graphic. Zoom function allows for detailed viewing.

Report

Report recordum OS

Reports may be defined and automatically created. The results are converted to pdf or xls files.

Download

Download recordum OS

All parameters can be downloaded easily and quickly to your PC. You may configure the default selection of parameters and use Excel for further processing for example.

airpointer applications

Reliable point of interest monitoring

Ambient air quality with regard to health-harming substances also has to be considered on a small scale, because local microclimatic conditions may create an air quality considerably differing from a large-scale approach. Health hazards caused by a momentary pollutant concentration increase indicate the necessity of point of interest monitoring.

The airpointer is the ideal tool for monitoring combustion process gases and volatile emissions.

air quality monitoring system

airpointer in industry and traffic

Because of its high flexibility, the airpointer is the ideal tool for monitoring CO, O3, H2S, SO2, NO/NO2/NOX and PM. The traffic data sensor is one of many add-on sensors, which may be added quickly and simply. It enables measuring the number of vehicles and their average speed. Resulting data may be recorded and clearly displayed, for example in combination with nitrogen oxide and PM data.

Road traffic-related monitoring with the airpointer. Data may be used as control signals for a traffic management system.

air quality monitoring system

airpointer at hot spots and indoors

The airpointer measures areas where people frequently stay and poor air quality affects the health of the individual. Mainly highly frequented places as shopping street, traffic junctions or parks and sports grounds with an intense traffic-related air pollution require reliable measurement data because thresholds will often be exceeded.

People spend more than 80% of their time indoors. Frequently, indoor air quality is not better than outdoors. Therefore, continuous indoor air quality monitoring is essential considering that the health of young or elderly people or people in poor health above all suffers rapidly under poor indoor air conditions.

The airpointer provides reliable measurement data at highly frequented locations. Air quality monitoring at schools, public buildings, shopping malls, and airports (Indoor Air Quality / IAQ).

Measuring where necessary

Mobile operation – It is often necessary to measure briefly at different sites. The compact design of the airpointer makes it the ideal tool for mobile operation. The airpointer ensures flexible air monitoring while using the required reference measurement methods. The airpointer can be quickly transported by car or trailer to the measurement site where it is needed.

Permanent installation

The airpointer is typically mounted on a pole (or a wall if necessary). Permanent installation is necessary when continuous monitoring over an extended period is required. The airpointer is lifted to the designated position with a crane and mounted with appropriate mounting brackets. It can be relocated within a minimal amount of time.

We can generally choose
what we want to eat and drink
and where we want to be,
but not the air we breathe

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recordum Messtechnik GmbH

Phone: +43 [0] 2236 22571 0
Street: Triester Strasse 14 Haus 1/ Top 403
City: 2351 Wiener Neudorf
State: Austria

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