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Met One-BT-645 Benchtop Particle Counter

Benchtop Particle Counter BT-645 is a high-performance benchtop device designed for accurate real-time measurement of airborne particle mass concentration. It is suitable for laboratory, environmental, and continuous air quality monitoring applications.

  • Measures PM1, PM2.5, PM10, and TSP mass concentrations
  • Laser light-scattering technology for accurate real-time detection
  • Large data storage with flexible measuring intervals
  • Suitable for long-duration monitoring in laboratory and industrial environments

Description

Using forward light-scattering laser technology, it provides precise readings across multiple particle mass ranges, including PM1, PM2.5, PM10, and TSP, making it suitable for both research and industrial applications. With a large onboard data storage capacity and flexible measuring intervals, the BT-645 supports continuous monitoring and long-term data analysis. Its reliable long-duration battery operation ensures uninterrupted performance, whether in laboratories, production facilities, or environmental monitoring sites.

Designed for professional use, the BT-645 combines accuracy, versatility, and ease of operation, making it ideal for laboratory testing, environmental monitoring, process control, and continuous air quality surveillance.

 

Features

  • Multiple Mass Ranges (PM1, PM2.5, PM10 & TSP).
  • Durable Design
  • Real-time surveillance.
  • Sample history.
  • Data logging at Low Cost.
  • Air purge system.
  • Warranty of one year.

Specification

 
 

Operating Principle Forward light scatter laser nephelometer
Concentration Range 0 to 100 mg/m3   (0 to 100,000 µg/m3)
Sensivity 1 µg/m3
Accuracy 5% traceable to standard with 0.6 µm PSL
Measuring Time 1, 5, 10, 15, 30 and 60 minutes
Flow Rate 2 LPM
Light Source Laser diode, 5 mW, 670 nm
Power 14.8V Li‐ion (Lithium Ion) battery pack
Battery Life Over 10 hours connuous operaon
AC Adapter/Charger Li‐ion battery charger, 100 – 240 VAC, 50/60Hz to 16.8 V @ 1.8 A
Communicaons RS‐232, USB
Data Storage Over 5,000 samples
Display 4 X 20 LCD
Standards Meets ISO 21501-4
Keyboard 6‐key membrane type
Size Height = 4.25” (10.8 cm)     Width = 7.44” (18.9 cm)    Thickness = 3.25” (5.4 cm)
Weight 3.7 lbs (1.7 kg)
Operating Temperature 0˚C to +50˚C
Relative Humidity 90% (non‐condensing)
Storage Temperature -20° C to +60° C
Supplied User Manual    USB Cable Communicaons Soware (Comet)AC Adapter / Batttery Charger
Optional PM2.5 Sharp Cut Cyclone (SCC‐112)    PM10 Sharp Cut Cyclone (SCC‐110)     Custom Serial Cable  (PN 3228)

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Please fill in the request form below and one of our engineers will contact you to discuss your system requirements and if we can help, our typical response time is within 1 – 3 working day.