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Humidified Tandem Differential Mobility Analyzer

Description:The Humidified Tandem Differential Mobility Analyzer (DMA) system has two differential mobility analyzers and a humidification section in between. Aerosol from the ambient atmosphere or from the built

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Humidified Tandem Differential Mobility Analyzer

Product Details

The Humidified Tandem Differential Mobility Analyzer (DMA) system has two differential mobility analyzers and a humidification section in between. Aerosol from the ambient atmosphere or from the built-in aerosol generator can be classified by the first DMA to produce a monodisperse aerosol for size analysis by the second DMA to determine the growth in particle size as a function of relative humidity.

Structure

· Built-in Atomizer Aerosol Generator

· Electrical Ionizer

· Differential Mobility Analyzer (DMA)

· Electrical Mobility Spectrometer

· Condensation Particle Counter (CPC)

· Humidity Conditioner

· Data analysis software

Features

· High stability atomizer aerosol generator

· High accuracy aerosol humidity conditioner

· Wide range, high resolution DMAs

· Patented dual-reservoir CPCs

· DMS and SMS data analysis software

· User friendly user interface with touch screen display

· Automatic data logging

Application

· Study of the hygroscopic growth of aerosols for accurate deliquescence and efflorescence measurements.

· Other aerosol studies by the TDMA method.

Technical Parameters

Overall Specifications of the Model 1040XP HTDMA*
Aerosol Generator (Part 1 of system)460 mm (H) x 610 mm (D) x 525 mm (W)
Part 1/Part 2 Total Weight100 lbs (45 kg)/ 140 lbs (60 kg)
Power Requirements (Part 1)115 or 230 VAC, 50-60 Hz, single phase, 250 W max, 160 W steady
Humidity Conditioner/Spectrometer (Part 2)460 mm (H) x 610 mm (D) x 525 mm (W)
Power Requirements (Part 2)100- 240 VAC, 50-60 Hz, single phase, 500 W max, 400 W steady
Operating Aerosol Pressure800 to 1050 mbar absolute pressure
Ambient Temperature Range10 to 35 ºC
Ambient Humidity Range0-90% RH, non-condensing
Polydisperse Aerosol Generation System
Single-Jet AtomizerStainless Steel Construction
Pressure5 to 60 psig (5 to 415 kPa gage), controlled by manual pressure regulator
Aerosol Flow RateTypical 3 L/min @ 35 psig (240 kPa gage)
Volume Mean Droplet Diameterabout 2 µm (GSD< 2.0)
Aerosol Size Range10 to 2000 nm
Aerosol Concentration> 107 particles/cm3 (typical for NaCl)
DryerDiffusion type (NafionR membrane requires dry comp. air, -20 ºC dew point)
Humidity Conditioner
Relative Humidity Control Range10 to 93% with user-selected set point in 1% intervals
Flow Rate1 to 10 L/min
RTD and Dew Point Accuracy± 0. 2 ºC
RH Accuracy± 1.5% for chilled mirror sensor; ± 2.5% for capacitive sensor
RH control stability± 1.2% (typical)
Response Time for < 10% ΔRH< 3 min (typical)
Water Reservoir Heater Control25 to 50 ºC in 5 ºC intervals
SaturatorNafion® Humidifier with DI water closed loop circulation
DryerDiffusion type (Drierite® desiccant)


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