Fine Particle Measurement

Dekati is a world leader in designing and manufacturing innovative fine particle measurement solutions. Our fine particle measurement instrument line includes instruments both for real-time monitoring and gravimetric sampling of <10 µm fine particles. Dekati has instrumentation available for particle number, mass and LDSA concentration measurements as well as particle size and size distribution measurements. Additional features of Dekati® Instruments include capability to measure partice charge state and possibility to analyse the particles for chemical composition after the real-time measurement. All our instruments use a single measurement technology throughout the entire specified particle size range from few nanometers up to 10 micrometers.

Aerosol Measurement

Requirements for an aerosol measurement instrument may vary depending on the measurement application and measurement location. All Dekati® Instruments are designed for field use and operation even in demanding environments. Many of our measurement instruments are suitable for direct measurement of high temperature aerosols, and together with our sample conditioning instruments we can offer complete measurement solutions for even up to 1200 °C sampling.

Real-time aerosol measurement

Dekati’s selection of real-time particle measurement instruments includes several instruments for particle concentration, particle size and size distribution monitoring. Compare our particle measuring systems below.

ELPI®+

HR-ELPI®+

HT-ELPI®+

MPEC+™

eFilter™ & DePS™

Measured concentrationNumber, chargeNumberNumber, chargeNumberCharge
Calculated concentrationMass, LDSAMass, LDSANumberMass, number, LDSA
Particle size range6nm-10µm6nm-10µm6nm-10µm23nm – 2.5 µm4nm-3µm,
lower cut adjustable 4-15nm
Size distributionYesYesYesNoNo
Number of particle size
classes
14100 or 5001411
Sample flow rate, lpm1010101.810-100
Max sample T, °C50*50*180*20050*
AdditionalSize classified particles collected for possible chemical analysisCan be used as an ELPI®+. Size classified particles collected for possible chemical analysisCan be used as an ELPI®+. Size classified particles collected for possible chemical analysisCombination of a sample conditioning system and a particle number sensor ePNC™Combination of two measurements; gravimetric filter holder and real-time measurement**

* Can be increased up to 600 °C when combined with Dekati® Sample Conditioning Instruments
** Not applicable for DePS

 

Gravimetric fine particle measurement

Cascade impactors are used to determine gravimetric size distribution of airborne particles. Dekati’s selection of cascade impactors includes four different impactors with different characteristics. All Dekati impactors are individually calibrated and manufactures of stainless steel to allow operation even in demanding environments.

DLPI+

HT-DLPI+

Dekati® PM10 Impactor

DGI

Particle size range16nm-10µm16nm-10µm< 10µm< 2.5 µm
Number of particle size
classes
141445
Number of impactor stagesFixedFixedAdjustableAdjustable
Sample flow rate, lpm101010 or 3050-100, adjustable
Max sample T, °C50*180*200*200*
Particle collection areaØ25 mmØ25 mmØ25 mm, smallest particle size fraction on Ø47 mm filterØ47 mm, smallest particle size fraction on Ø70 mm filter
AdditionalCan be upgraded to an ELPI®+/HT-ELPI®+/HR-ELPI®+Can be upgraded to an ELPI®+/HT-ELPI®+/HR-ELPI®+

* Can be increased up to 600 °C when combined with Dekati® Sample Conditioning Instruments