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PAP 610

Process Aerosol Photometer PAP 610 for analysis of particle mass concentration in aerosols, best for oil mist characterisation during blow by testing

The Process Aerosol Photometer PAP 610 was developed from Topas for measurements of mass concentration in blow-by aerosols, where the concentration is determined in-situ.
Process Aerosol Photometer PAP 610, front view Process Aerosol Photometer PAP 610, front view
This measuring instrument is an addition to the Gravimetric Measurement System GMS 141 which is also provided by Topas and used for calibrating the PAP 610.
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  • high time-resolution transmittance measurement with 2 wavelengths
  • temperature compensation of electronic assembly
  • simple cleaning of process windows
  • meatable measurement chamber (maximum temperature limited by a safety temperature limiter)
  • seals of FKM/FPM (oil- and temperature-resistant)
  • software PAPWin for calibration, configuration and data acquisition


  • transmittance measurement of oil aerosol for crank case ventilation in combustion engines
  • concentration monitoring of aerosol generators on oil mist test stands (SPT 140)
  • in-line monitoring of aerosol separators (oil mist separator testing)
  • monitoring of mean particle size of submicron aerosols

A highly concentrated aerosol passes through an extinction of light arrangement and causes a light decrease of the incident light in propagation direction.

It may be shown that is possible to draw conclusions about the concentration and mean particle size of the aerosol by measuring light decrease for two different wavelengths.

A direct indicator for the particle size is the extinction ratio.

Parameter title Unit Value
measurand(s) - light transmission
measuring range, concentration g/m³ 0,02 - 3
power supply, signal processing - 12 V DV; 100 mA (power supply viar USB)
power supply, heater - 230 V AC; 50 ... 60 Hz; 1 A
hose connector, inlet/outlet mm 28 (nominal diameter)
wave length of lightsource nm 470 (blue), 875 (infrared)
dimensions (w × h × d) mm 76 × 76 × 576
weight kg 6,0
  • Ruppel S, Schatz D, Wöhler M, Elsäßer A. Optimization of oil mist separation within the complete crankcase ventilation system Heavy-Duty-, On- und Off-Highway-Motoren 2016. Proceedings 0 (2017) 0, 241-259
  • Sauter H, Mathiak D, Müller J, List S Kurbelgehäuseentlüftung - direkte Messung von Ölaerosolen MTZ - Motorentechnische Zeitschrift 73 (2012) 0, 140-145

Silimar products

GMS 141

GMS 141 gravimetric sampling system of oil concentrations at Blow-By oil mist separators

Gravimetric Measurement System GMS 141, front view
detail view

BBT 143

BBT 143 test system for the characterisation of the oil content in blow-by gases at engine test systems

Blow-By Test System BBT 143, front view
detail view

PAP 612

Process Aerosol Photometer PAP 612 for analysis of particle concentration in aerosols, extinction/scattering light for twi wavelength, best for blow by testing

Process Aerosol Photometer PAP 612, front view
detail view