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F-701-20 Ambient Air Dust Concentration Monitor

Ambient air particulate monitor to detect TSP, PM10 or PM2.5 in ambient air for use in industrial or governmental ambient air monitoring networks.


Ambient air particulate monitor to detect TSP, PM10 or PM2.5 in ambient air for use in industrial or governmental ambient air monitoring networks.


  • Determination of dust mass concentration in ambient air independent of matter
  • C-14 method, no measurable decrease in activity
  • Lowest radioactivity of all beta gauges, usable without license for handling radioactive substances acc. to governmental regulations
  • Automatic zero point correction
  • Sample gas flow, stabilized 1m³/h
  • Suction of a constant sample gas flow rate independent of ambient temperature and pressure
  • Repeated sampling on the same spot
  • Collected dust sample available for component analysis, e.g. heavy metals
  • RS-232 interface and analog output, status signals

Your Benefit

  • Certified for official ambient air particulate matter monitoring
    Type approved according to EN 15267-3 for PM2.5 or PM10, sample inlets available according to EN12341:2014 and TSP VDI2463, compatible with sample inlets according to US NAAQS 40CFR p.50
  • Easy set-up
    Install and instantly start accurate measuring: Accurate factory pre-calibration, gravimetric calibration only needed if required by law
  • Broad functional range
    One device for all sorts of particulate matter: Maintenance-free and drift free source allows material independent measurement of PM 2.5 or PM10 or TSP
  • Compatible with existing air Quality networks
    Device can be time synchronized, common interfaces are available
  • Low filter tape consumption
    Smart filter tape consumption optimization: Filter spots are used up to 24 times per day depending on the measured particulate matter conditions
  • Remote data access
    Device stores measuring data and status, errors and parameters for at least nine months and can show them on display or grant access via RS232 interface
  • Reliable monitoring
    Automatic control functions and relative measurement compared with clean filter spot always ensure reliable and extremely stable daily mean values


  • Ambient air-monitoring network for particulate matter monitoring
  • Mobile immission measurement vehicle
  • Dust measurement in OSH
  • Indoor dust measurements
  • Dust sampling for analysis of heavy metals and other components
  • Long-term background studies of the immission dust exposure
  • Dust monitoring and sampling in contaminated areas and storage facilities
  • Dust measurement of diffuse emission of building sites or deposits (such as coal)
  • Dust in intake and exhaust ducts

Technical Data

Measurements dust concentration in ambient air
TSP, PM10, PM2.5
Dust concentration 0 … 100 µg/m³ to 0 … 10 mg/m³
Temperature at sample inlet -20 … +50°C (-4°F to +122°F)
Ambient air pressure 800 … 1300hPa
Operating temperature for the analyser 0 … +40°C (+32 … +104°F), non-condensing
Compliances European Directive 2008/50/EC of the European Parliament and of the Council on ambient air quality and cleaner air for Europe from May, 21st 2008
VDI 4202-1 2004-2008
VDI 2463 TSP Inlet
EN 12341 PM10 Inlet
EN 14907 PM2.5 Inlet
US EPA NAAQS 40 CFR Part 50 PM10/ 2.5 Inlet
Certificates CE, GOST R, Pattern Approval PRC
Announcement on the Standard Federal Bulletin for the ability of measuring equipment for continuous ambient air monitoring of PM10 (12.09.2006) and PM2.5 (17.06.2014), QAL1 certified acc. EN 15267 (PM2.5, PM10)

Measuring principle direct determination of particulate matter deposited on filter tape by help of radiometric detection system
Type extractive analyser for ambient air, sample is succed through TSP or PM10 or PM2.5 separator and deposited on filter tape
Radiation source encased C14 radiation source,
activity < 450kBq (< 12,5µCi)
Detector Geiger-Müller tube
Sample system TSP inlet (VDI 2463)
PM10 inlet (EN12341/ NAAQS 40 CFR, part 50 or EN12341:2014)
PM2.5 inlet (EN14907/ NAAQS 40 CFR, part 50 or EN12341:2014)
suction tube
Operation touch screen, German or English
Accessories temperature sensor
absolute pressure sensor
probe heater with temperature sensor
filter tape printer and cover foil for preparation of dust component analysis
roof penetration
Filter material glass fibre filter (free of heavy metals), retention = 99.95% at 0.3µm particle diameter
Filter tape length 30m, 45m (98ft, 148ft)
Measurement value output/ interface 2x 4-20mA analog output,
RS 232, also for Gesytec protocol (Bayern/Hessen)
Response time semi-continuous principle, response time depends on settings of cycle time and sample counts SC (number of cycles per spot)
SC: 1 – 24, cycle time: 1/4h – 24h, selectable
Sample flow rate 1000l/h (16,667l/min), max. deviation +/-2%, controlled
Detection limit < 1 µg/m³
Availability > 95%
Measurement data base 9 months

Power supply 230 V, 50/60 Hz, 2.9 A
115 V, 50/60 Hz, 5.8 A
Measuring output 2 x 4-20mA, max. 500 Ohm
1 x RS 232
Relay output 8 x relay output, max. load 24V, 0.5A
Input 3 x input for external dry contact
Dimensions (HxWxD) approx. 320 x 482 x 530 mm (12.6 x 19 x 20.9”)
19″ rack, 7HU or tabletop unit
Protection IP20
Weight approx. 31 kg (68lbs)



Product overview ambient air monitoring / DE (2 MB)
Product overview ambient air monitoring / EN (2 MB)


Product brochure F-701-20 / DE (389 KB)
Product brochure F-701-20 / EN (383 KB)

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