ATM 221/D Aerosol Generator

Atomizer Aerosol Generator ATM 221/D for aerosolisation of suspensions

The ATM 221/D Atomizer Aerosol Generator serves for the generation of aerosols from liquids, especially from suspensions.

The generation of polydisperse aerosols with increased quantities of supermicron particles (≥ 1 µm) is typically done by dust generators. An elegant and more precise alternative to dry dispersion is the aerosolisation of suspensions with subsequent drying. In light of this, the ATM 221/D was especially developed for the calibration and validation of PM sensors.

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Standards

VDI 3491-2
CEN/TS 18086
CEN/TS 17660-2

Download topas-221D-ATM_productsheet-en-1.pdf

Benefits

removable dispersion unit for easy cleaning
operation of dispersion unit away from base station (e.g. within thermostats)
including magnetic stirrer for stabilisation and homogenisation of suspensions/solutions
additional ball valve for start-stop operation at adjusted operational pressure

FAQs

Principle

The aerosolisation of the aerosol substance (pure liquid, solution or suspension) is realised within the ATM 221/D by a special two-substance nozzle.

A lower pressure at the aerosol substance inlet is initiated when a gas flow passes the nozzle. This causes an aerosol substance supply into the nozzle and afterwards to its dispersion (Venturi principle).

Technical data

Parameter Title	Unit	Value
setting parameter	bar	pressure
setting range	bar	max. 6
setting resolution	-	ontinuously adjustable
setting method	-	manual
aerosol, volumetric flow rate	L/h	200 ... 750 (1 ... 6 bar)
aerosol, mass flow rate (aerosol substance)	g/h	1,3 ... 3,7 (DEHS); 0.010 ... 0.025 (10 wt.-% ISO A1, after drying)
operating medium, aerosol substance	-	liquids (DEHS, PAO, ...), solutions (NaCl, KCl, ...), suspensions (ISO A1, PSL, ...)
operating medium, aerosol substance - filling volume	mL	max. 400
operating medium, gas/air	-	dry, particle-free compressed air or pressurised inert gas
hose connector	mm	Ø 8 (outer diameter)
dimensions (w × h × d)	mm	250 × 300 × 200
weight	kg	4,7 (without magnetic stirrer 4,4)

Accessories

diffusion dryer (DDU 570/L, DDU 570/H)
ultrasonic desintegrator (UDS 751)
aerosol substance (DEHS)

ATM 221/D Aerosol Generator

ATM 221/D Aerosol Generator

Standards

Benefits

Applications

FAQs

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