FEATURES AC or battery operationՕ 0.3 micron at 0.1 cfm (227B) 0.5 micron at 0.1 cfm (227A)Օ Counts 2 sizes simultaneously Stores data from 200 locationsՕ Labels data with location Internal rechargeable batteryՕ Weighs only 2.1 lbs (0.97 kg) Spreadsheet-compatible datafiles with Particle Visionՙ˝PortAll software APPLICATIONS ٕ Monitor and verify cleanrooms Test filters in placeՕ Track down particle sources Monitor:LAF and biohazard benchesՋCleanroom laundries݋HVAC systems݋Computer rooms݋Food and beverage packaging݋Hospitals: Pharmacy and surgery݋Indoor Air Quality (IAQ)݋Aerospace Assembly݋Medical Device Assembly݋Automotive: Paint spray booths݋Filter performance > The Model 227 Portable Airborne Particle Counter offers the features and sensitivityof larger instruments and easy handheld operation. Weighing only two pounds, theModel 227 features a sensitivity of 0.3 micron (227B) or a sensitivity of 0.5 micron݋(227A), is fully self-contained, and uses reliable laser diode technology. It connectsto a remote printer or computer, and can be part of a facility-monitoring system.The Model 227 counts two sizes of particles simultaneously. Sample timescan be set for up to 24 hours. Count data are stored in memory for easy transfer to aprinter or computer. To make the most of its portability, the Model 227 features severalcounting modes for quick analysis of cleanroom conditions. The concentration mode݋gives a continuously updated approximation of the number of particles per cubic footor per liter. The approximation is based on a user-selectable sample period of one toten seconds. In the auto mode, it automatically takes a specified number of samples݋and stops, allowing unattended operation. The average mode calculates the average,minimum, and maximum count after a specified number of samples.In beep mode, the Model 227 sounds a beep each time it counts a specifiednumber of particles. This is useful for locating leaks in filters.To protect your cleanroom, the Model 227 contains an exhaust filter. Thepump and sensor are turned off when the battery charge drops below a safe operating݋level, maintaining power to preserve data stored in memory. The Met One Model 227:a handful of information. size="-1">