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产品名称:
Particle Counter
产品型号:
Met One 227A/227B
产品展商:
MetOne
关注指数:3750
产品文档:
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Met One 227A/227B HandHeld airborne Particle Counters
Features
■ 0.5 micron at 0.1 CFM (227A)
■ 0.3 micron at 0.1 CFM (227B)
■ User-selectable second channel
■ battery operation
■ Weighs only 0.97kg
Particle Counter
的详细介绍
The Met One 227 Handheld Airborne Particle Counter features the sensitivity
of larger instruments and easy handheld operation. Weighing only two
pounds, the 227 features a 0.3 micron sensitivity (227B) or a 0.5 micron
sensitivity (227A), and uses reliable laser diode technology.
The Met One 227 counts two sizes of particles; the second size is userselectable.
Configure sample times from one second up to 24 hours. To make
the most of its portability, the 227 features several counting modes for quick
analysis of cleanroom conditions.
Concentration mode: Gives a continuously updated approximation
of the number of particles per liter or cubic foot.
The approximation is based on a user-selectable
sample period of one to ten seconds.
Auto mode: Automatically takes a specified number of samples
and stops, allowing unattended operation.
Average mode: Calculates the average, minimum, and maximum
count after a specified number of samples.
Beep mode: Sounds a beep each time it counts a specified
number of particles.
To protect cleanrooms, the Met One 227 contains an exhaust filter. The
pump and sensor are turned off when the battery charge drops below a safe
operating level, maintaining power to preserve data stored in memory.
Print results to a remote printer or download data to a computer or
facility monitoring system. Use PortAll Version 2 software with the 227
to schedule automated data collection of particle counts. Track
and identify trends to eliminate particle contamination sources.
Features
■ 0.5 micron at 0.1 CFM (227A)
■ 0.3 micron at 0.1 CFM (227B)
■ User-selectable second channel
■ AC or battery operation
■ Stores data from 200 locations
■ Labels data with location
■ Internal rechargeable battery
■ Weighs only 0.97 kg (2.1 lbs)
■ Compatible with PortAll™
Version 2 software
Applications
■ Monitor and verify cleanrooms
■ Test filters in place
■ Investigate particle sources
■ Monitor:
- Laminar Air Flow (LAF)
- Biohazard benches
- Cleanroom laundries
- HVAC systems
- Computer rooms
- Food and beverage packaging
- Hospital pharmacies, surgery rooms
- Indoor Air Quality (IAQ)
- Aerospace assembly
- Medical device assembly
- Automotive paint spray booths
Easy to use, reliable and flexible
handheld air particle counter
Met One 227A/227B
HandHeld airborne Particle counters
Performance Specifications
Size Channels 227A ch1 0.5 μm
ch2 user selectable—0.7, 1.0, 3.0, or 5.0 μm
227B ch1 0.3 μm
ch2 user selectable—0.5, 1.0, 3.0, or 5.0 μm
Flow Rate 2.83 LPM (0.1 CFM)
Light Source Laser diode with 30,000 hours Mean Time to Failure (MTTF)
Coincidence Loss Less than 5% at 70,600 particles/L (2,000,000 particles/ft3)
Factory Calibration Mono-dispersed polystyrene spheres (NIST traceable)
Display 4-line LCD, 7 digits
Outputs RS-232C/RS-485 for computer or printer
Location Labels 100, appear on printout
Data Storage 200 samples, rotating buffer
Sample and Hold Times 1 second to 24 hours
Count Alarms 1 to 9,999,999 each channel
Concentration Mode 1 second samples, 1 to 10 samples averaged, display updated
every second; displays counts/L or counts/ft3
Power AC adapter or internal battery pack
Battery Rechargeable NiMH
Battery Recharge Time 90% in 10 hours; 100% in 12 hours
Operating Time 8 hours continuous
Size 10.3 w x 17.5 h x 5.9 d cm (4 x 6.9 x 2.3 inches)
Weight 0.97 kg (2.1 lbs)
Environment Operating 12 to 29°C (55 to 84°F),
20 to 95% relative humidity, non-condensing
Storage -40 to 70°C (-40 to 160°F),
up to 98% relative humidity, non-condensing
Accessories Included Isokinetic Probe (direct mount); Purge Filter; Recharger Stand;
AC Adapter; Operator Manual
When ordering, specify Minimum Sensitivity 0.5 μm (227A) or 0.3 μm (227B)
Power (AC) AC adapters for 100 VAC, 115 VAC, or 230 VAC
Optional Accessories Relative Humidity/Temperature Sensor
High Pressure Diffuser
Printer, external
Carrying/Shipping Case
PortAll Version 2 Software
Lit. No. DS-227A/B-US.0707
