商品介紹

(1). Scanning Electrical Mobility Spectrometer (SEMS)***掃瞄式氣膠粒徑分佈監測儀***

BMI has developed an advanced Windows®-based real time software with a
graphical user interface to simplify the SEMS operation.  
 
The core software enables rapid time scanning of the spectrometer voltage to
select  a  broad  size  range  of  particles  in  time  sequence,  allowing  the        
condensation particle counter to measure the number size distribution - how
the concentration of particles varies with particle size. This is a fundamental
measurement  in  the  field  of  air  quality  research  and  industrial  nanoparticle
monitoring.
 
The  measurement  accuracy  is  enhanced  through  a  key  innovation  in  the  
scanning software that addresses the effects of desmearing, multiple charging,
and the DMA transfer function. 

(2). Mixing Condensation Particle Counter (MCPC) ***快速混合型微粒計數器***

(2). Mixing Condensation Particle Counter (MCPC) ***快速混合型微粒計數器***

The MCPC grows particles rapidly through the turbulent mixing of particle and butanol-saturated flows. Benefits include:

• Ultra-fast response

• Detects particles as small as 5 nanometers

• Extremely compact and light-weight

(3). Humidified Tandem Differential Mobility Analyzer (HTDMA) ***增濕型氣膠成長因子監測儀***

The HTDMA allows size-resolved measurements to be made of the water
uptake properties of aerosols.  This information is critical for understanding how
particles act as cloud condensation nuclei and how particles grow and deposit  
within the human respiratory system.  HTDMA data have found important      
applications in research on the climate impacts of aerosols.

Fully automated and easy-to-use software allows the user to configure the
HTDMA to step through a pre-selected series of monodisperse dry particle sizes
with multiple RH’s tested at each size.  The cycle may be repeated automatically  
for as long as desired.

A built-in calibration system that introduces known chemical composition  
particles into the HTDMA may be purchased as an option to validate operation.

(4). Particle into Liquid Sampler Head (Model 4000) ***水洗式氣膠收集器PILS***

The economical PILS Head and Steam Generator is ready to interface with your liquid handling system and collect samples for analysis of multiple water soluble inorganic
or organic species.  
 
Key Features:  
 Quantitative sampling efficiency and field tested
 Rapid water soluble composition data
 Easily integrated with user’s Ion Chroma-tography or other analysis system
 Suitable for ground based sampling or laboratory experiments

(5). AEROSOL GENERATION SYSTEM ***氣膠產生系統***

Our atomizer-based Aerosol Generation System produces particles of known chemical composition and diameter size range. Features include:

• Syringe pump with a broad range of liquid flow rate control

• In-line dryer to remove particle-bound water

• Dilution chamber for diluting high concentration atomizer output

(6). Aerosol Neutralizer Body ***氣膠電荷中和器***

Key Features:

Sample flow rates: 1-5 lpm
Total particle concentrations: up to 50,000/cc
Charge neutralizer performance has been validated against other commercial    neutralizers
Structure: Stainless steel tubing with high vacuum brazed construction 
Compact Design: 9”L x 1.25” diameter
Easy disassembly for cleaning and/or Polonium-210 source installation
Design can be easily adapted for mounting of other components (heaters, vapor sources, chillers, EM grids) 

(7). Impactors ***衝擊式微粒粒徑篩選器***

Impactors are designed for different particle diameter cut sizes and various flow rates.  

Our Impactors may be purchased with or without differential pressure sensors to
measure air low and to provide a warning of jet clogging. 

(8). Laminar Flow Elements (LFE) ***層流板式流量量測元件***

Laminar Flow Elements (LFEs) are designed to measure flow rates between 0.03 and 20 lpm. 

LFEs may be purchased with or without differential pressure sensors. 

(9). Two-Way Flow Splitters ***一對二分流管***

Our Two-Way Flow Splitters are useful for careful division of particle-laden sample
flows.  Each consist of 2” long legs and a 45° angle between the two exit tubes.  

(10). Isokinetic Inlet System ***等動力採樣入口系統***

Inlets are offered with or without isokinetic flow control, where the sample flow rate is automatically controlled to match the ambient air speed.   
Performance is validated through wind tunnel testing and computational fluid dynamics modeling. 
  
Key Features:

Fully automated, hands-off operation
Transmission efficiency > 95% for particle diameters <6µm
Wind tunnel tested and validated
Inlet manifold designed to suit customer’s sampling needs
Aerodynamic, twin-diffuser prevents turbulent boundary layer separation
Removal of diffuser turbulent boundary layer through passive pumping
Proper accounting for attack angle through flexible mounting design
Low power blower to draw and actively control 150 lpm sample flow 
(up to 50 lpm of air flow for instruments)
Sample pick-off ports for a user-specified number of instruments
De-Iced Diffusers and inlet aerodynamic shroud
Pitot tube for ambient velocity measurements and isokinetic flow control
Flow rate, pressure and temperature measurements of sample flow
Integrated data system to control operation, record all parameters and provide 1 Hz serial output data stream
Control electronics, keyboard, mouse & monitor conveniently packaged into two rack mountable enclosures 
Inlet control software

(11). Counterflow Virtual Impactor Inlet System ***逆向流式虛擬衝擊器***

The CVI inlet is offered with automatic flow control, where the cloud droplet cut size is kept constant by changing the counterflow rate. Performance is validated through wind tunnel testing and computational fluid dynamics modeling.

 Key Features:

Fully automated, hands-off operation
Droplet cut sizes between 5 and 40µm
Wind tunnel tested and validated
Inlet manifold designed to suit customer’s sampling needs
30 lpm of aerosol sample flow available to instruments
Counterflow rate software adjustable between 30 and 60 lpm to vary cloud droplet cut size
Ground-based operation possible using integrated wind tunnel
Proper accounting for attack angle through flexible mounting design
De-Iced inlet aerodynamic shroud
Pitot tube for ambient velocity measurements
Flow rate, pressure and temperature measurements of sample and add flows
Low power blowers to draw and actively control the 30 lpm sample flow and 60 to 90 lpm add flow
Integrated data system to control operation, record all parameters and provide 1 Hz serial output data stream
Control electronics, keyboard, mouse & monitor conveniently packaged into two rack mountable enclosures