Environmental Devices HAZ-DUST Air Particle Monitor PM10 | 0.1-50µm | Infrared

• Calibration Standard CS-101

• Calibration Guide Paper 

• AC ADAPTER 

• Carrying Case 

• Misc Supplies/Tools etc. 

HAZ-DUST is a passive real time aerosol monitor that utilizes optical light scattering to continuously sense a population of particles as they transverse the sensing chamber. This nephelometric technique is based on the principles of near forward light scattering, at a 45 to 90 degree angle, of electromagnetic radiation in the near infrared. The radiation scattered by airborne particles is detected by means of a silicon photo cell and particle concentration is directly proportional to its signal output. Signal processing is performed by lock-in synchronous electronic circuitry which enhances performance by canceling detector noise
and drift. All electronic circuitry is housed in an RFI protective case.  Power is provided
by a high-energy rechargeable nickel cadmium battery that allows for operations
of 8 hours or greater.

CALIBRATION

Calibration is performed using a representative test dust whose specifications are listed in Table 1. When aerosolized to factory calibration standards, the mean mass diameter (mmd) equals 10 micro-m +/-0.5 micro-m and a log-normal size distribution. The calibration aerosol has a 50% cutpoint at a 10 micro-m particle aerodynamic diameter, which has applications for both EPA and OSHA particulate air monitoring. The 10 micro-m cutpoint is consistent with the ACGIH Particle Size-Selective Sampling Criteria for Thoracic Particulate Mass. ACGIH defines TPM as those particles that are likely to be deposited anywhere within the lung airways (tracheobronchial) or gas exchange (alveolar/respirable) region.  The 10 micro-m cutpoint is also consistent with the EPA PM10 reference method for ambient particulate air monitoring.

SPECIFICATIONS

Optical Principle:Near Forward IR light scattering
Electromagnet Radiation: 10mW Infrared pulsed
LED at 880nm
Linear Measurement range: 0.01 to 200mg/m3
Precision: 0.2% of full scale at 37oC
Noise Level: +/-0.005mg/m3
Time Constant: 8 seconds
Particle Size Range: .1-50 micro-m
Operating Temperature: 0-50oC
Storage Temperature: -20-60oC
Linear Signal Output: 0-1V
Alarm Output: 85dB
Power: Rechargeable NiCd Battery
Battery Charge Time: 12-15 hours
Dimensions: 23x10x5 cm
Weight: 1.4kg

Unit has been power-tested and is reading within acceptable range | See photos for details