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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.tSFTextile Testing Instruments, Testing Equipment Manufacturer
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Structure>tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Built-in Atomizer Aerosol GeneratortSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Electrical IonizertSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Differential Mobility Analyzer (DMA)tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Electrical Mobility SpectrometertSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Condensation Particle Counter (CPC)tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Humidity ConditionertSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Data analysis softwaretSFTextile Testing Instruments, Testing Equipment Manufacturer
tSFTextile Testing Instruments, Testing Equipment Manufacturer
Features>tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; High stability atomizer aerosol generatortSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; High accuracy aerosol humidity conditionertSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Wide range, high resolution DMAstSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Patented dual-reservoir CPCstSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; DMS and SMS data analysis softwaretSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; User friendly user interface with touch screen displaytSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Automatic data loggingtSFTextile Testing Instruments, Testing Equipment Manufacturer
tSFTextile Testing Instruments, Testing Equipment Manufacturer
Application>tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Study of the hygroscopic growth of aerosols for accurate deliquescence and efflorescence measurements.tSFTextile Testing Instruments, Testing Equipment Manufacturer
middot; Other aerosol studies by the TDMA method.tSFTextile Testing Instruments, Testing Equipment Manufacturer
tSFTextile Testing Instruments, Testing Equipment Manufacturer
Technical Parameters>tSFTextile Testing Instruments, Testing Equipment Manufacturer
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 Weight |
100 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 Pressure |
800 to 1050 mbar absolute pressure |
Ambient Temperature Range |
10 to 35 ordm;C |
Ambient Humidity Range |
0-90% RH, non-condensing |
Polydisperse Aerosol Generation System |
Single-Jet Atomizer |
Stainless Steel Construction |
Pressure |
5 to 60 psig (5 to 415 kPa gage), controlled by manual pressure regulator |
Aerosol Flow Rate |
Typical 3 L/min @ 35 psig (240 kPa gage) |
Volume Mean Droplet Diameter |
about 2 micro;m (GSD 2.0) |
Aerosol Size Range |
10 to 2000 nm |
Aerosol Concentration |
107 particles/cm3 (typical for NaCl) |
Dryer |
Diffusion type (NafionR membrane requires dry comp. air, -20 ordm;C dew point) |
Humidity Conditioner |
Relative Humidity Control Range |
10 to 93% with user-selected set point in 1% intervals |
Flow Rate |
1 to 10 L/min |
RTD and Dew Point Accuracy |
plusmn; 0. 2 ordm;C |
RH Accuracy |
plusmn; 1.5% for chilled mirror sensor; plusmn; 2.5% for capacitive sensor |
RH control stability |
plusmn; 1.2% (typical) |
Response Time for 10% Delta;RH |
3 min (typical) |
Water Reservoir Heater Control |
25 to 50 ordm;C in 5 ordm;C intervals |
Saturator |
Nafionreg; Humidifier with DI water closed loop circulation |
Dryer |
Diffusion type (Drieritereg; desiccant) |
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