how to deal texas hold em,blackjack 21 game,run 21 card game,DIGITAL DUST MONITOR MODEL 3443

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  • Measures aerosol concentrations corresponding to PM10.
  • The intake isolates the aerosol sample so that the optics chamber is kept sterile for improved reliability and low maintenance.
  • This measures 0.1 to 10µm particle size aerosol contaminants such as fumes, dust, smoke and mists.
  • Battery-operated, data-logging, light-scattering laser photometer that gives you real time aerosol mass readings.
  • Suitable for clean office settings well as harsh industrial workplaces, construction and environmental sites, and outdoor applications.

  • Measures PM 10 particle matters, such as dust, fumes, and smoke
  • Real time and long term measurements of dust concentration
  • Compact and lightweight unit
  • PC interface with USB and software for downloading data to your PC
  • Analog output controls other devices
  • Data logging up to 100,000 measurements and displays MIN / MAX / AVG and Timing graph for review
  • Complete with rubber protector, shoulder strap, data processing software, USB cable, AC adaptor, 2 pcs LCD protective sheet, rubber cap, 2 pcs filter
  • Calibration certificate

  • IAQ Investigations
  • Industrial Hygiene
  • Occupational Health & Safety
  • Contamination Exposure Monitoring
  • Manufacturing Process Control

Measurement Specifications
Measuring Method Light Scattering Method
Measuring Object Airborne Particle Matter 0.1 to 10 µm
Measuring Range 0.001 to 10.0 mg/m3
Accuracy +/- 10% of reading
General Specifications
Light Source Laser diode
Data Logging 100,000 data and time stamped measurements
Interface USB
Output O to 1 V, Pulse, Alarm
Power Supply 6 AA batteries or AC adapter
Dimensions W 6.4″ x H 4.3″ x D 2.4″ (162 x 109 x 60mm)
Weight 2.9 lbs. (1.3 kg)
Warranty 1 year
What’s Included Meter, Operation manual, Data processing software, USB cable, AC adapter, Rubber protector, LCD protective sheet, Shoulder strap, Filter, NIST TRACEABLE CALIBRATION certificate

When our laser hits the PM, light scattering occurs. The 3443 collects the amount of scattering light and calculates the mass concentration in proportion to the luminescence. The mass concentration is based on the density of PM, thus gravimetric sampling is required if the density is unknown.

PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope. Particle pollution includes:

  • PM10 : inhalable particles, with diameters that are generally 10 micrometers and smaller; and
  • PM2.5 : fine inhalable particles, with diameters that are generally 2.5 micrometers and smaller.
    • How small is 2.5 micrometers? Think about a single hair from your head. The average human hair is about 70 micrometers in diameter – making it 30 times larger than the largest fine particle.
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A dust monitor measures the mass concentration of particulates in the air. This is typically expressed in milligrams of particulates per cubic meter of air. This makes the dust monitor very useful for monitoring substances that could negatively impact a person’s health.

We have two different types: a light-scattering monitor model 3443 (the industry standard) and a piezobalance monitor model 3521.

There are two key differences between the units. The first is that the light scattering model 3443 requires a K-factor to accurately report the mass concentration of particulates, while the piezobalance model 3521 does not. The second key difference is that model 3443 is suitable for long-term monitoring while the piezobalance model 3521 needs to be cleaned every hour to function correctly. The piezobalance monitor is also capable of measuring oil mist for specialized applications.

In order to accurately report on the mass concentration of particulates that it has measured a light-scattering particle counter needs to know the density of the particulates at the measuring site. Without this the unit will still count particulates, but it cannot accurately gauge the concentration in the air. To obtain the factor it is necessary to obtain a gravimetric sampling of the particulates at the measurement site. This is done by collecting particulates in a special sample container and then sending it to a lab for analysis.

Yes, all our instruments come with a NIST TRACEABLE CALIBRATION certificate.

Annual calibration is recommended to ensure accuracy. However, this can vary based on how often the dust monitor is used and the environments it’s used it. Also, some companies have an SOP in place that specifies how often the instrument will need to be serviced. More specifically, regulatory compliances may dictate the calibration interval.

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