Fine Particle Measurement Instruments

Real-time measurement

Dekati’s selection of real-time particle measurement instruments includes several instruments for particle concentration, particle size and size distribution, and particle charge level monitoring.

ELPI®+

HR-ELPI®+

HT-ELPI®+

eFilter™ & DePS™

BOLAR™

Measured concentration Number, charge Number Number, charge Charge Bi-polar charge
Calculated concentration Mass, LDSA Mass, LDSA Mass, number, LDSA
Particle size range 6nm-10µm 6nm-10µm 6nm-10µm 4nm-3µm, lower cut adjustable 4-15nm 0-11.57µm (@60 lpm)
Size distribution Yes Yes Yes No Yes
Number of particle size
classes
14 100 or 500 14 1 5
Sample flow rate, lpm 10 10 10 10-100 30-90
Max sample T, °C 50* 50* 180* 50* 35
Additional Size classified particles collected for possible chemical analysis Can be used as an ELPI®+. Size classified particles collected for possible chemical analysis Can be used as an ELPI®+. Size classified particles collected for possible chemical analysis Combination of two measurements; gravimetric filter holder and real-time measurement** Size classified particles collected for possible analysis to get charge/mass ratio.

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

Gravimetric measurement

Gravimetric impactors are used to determine gravimetric size distribution of airborne particles. Dekati’s selection of gravimetric 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 range 16nm-10µm 16nm-10µm < 10µm < 2.5 µm
Number of particle size
classes
14 14 4 5
Number of impactor stages Fixed Fixed Adjustable Adjustable
Sample flow rate, lpm 10 10 10 or 30 50-100, adjustable
Max sample T, °C 50* 180* 200* 200*
Particle collection area Ø25 mm Ø25 mm Ø25 mm, smallest particle size fraction on Ø47 mm filter Ø47 mm, smallest particle size fraction on Ø70 mm filter
Additional Can 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