1.1. About the Measurement The AEROCET 831 counts and sizes particles in 7 different size ranges then uses a proprietary algorithm to convert count data to mass measurements (µg/m3). Fundamentally, the AEROCET 831 calculates a volume for each detected particle then assigns a standard density for the conversion.
The USB drivers on the included Comet CD must be installed before connecting the AEROCET 831 USB port to your computer. If the supplied drivers are not installed first, Windows may install generic drivers that are not compatible with this product.
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Figure 1 – Standard Accessories AEROCET 831 Optional Accessories Zero Filter Kit Boot Carrying Case Flow Meter Kit MOI P/N: 8517 MOI P/N: 80846 MOI P/N: 80450 MOI P/N: 80530 Figure 2 – Optional Accessories AEROCET 831 Manual Rev A Page 5...
1. Press the Power key for 0.5 seconds or more to turn on the power. 2. Observe the Startup screen for 3 seconds then the Sample screen (Section 3.5) 3. Press Start / Stop key. The AEROCET 831 will sample for one minute and stop. 4. Observe the mass values on the display 5.
The following sections cover the basic operation of AEROCET 831. 3.1. User Interface The AEROCET 831 user interface is composed of a rotary dial, 2 button keypad and a LCD display. The keypad and rotary dial are described in the following table. Control...
Favorite range (default = PM2.5). Select a Favorite range in the Settings Menu (Section 4.2.5) and the AEROCET 831 will pin the Favorite range to the top display line. The second line scrolls (rotary dial) through the remaining ranges and battery capacity. The Sample Screen is shown in Figure 6 below.
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4.2.2. Sample History Press to View Press Select to view history. HISTORY AEROCET 831 will display the last record (Date, Time, 30/MAR/2011 L001 Location, and Record Number). Rotate dial to scroll through 10:30:45 #1000 records. Press dial to view record.
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Press dial to select next digit. Repeat action until last digit. Rotate and Press Last digit. Rotate dial to scroll values. Press dial to exit Edit TIME 10:30:45 mode and return to view screen. AEROCET 831 Manual Rev A Page 10...
The USB drivers on the included Comet CD must be installed before connecting the AEROCET 831 USB port to your computer. If the supplied drivers are not installed first, Windows may install generic drivers that are not compatible with this product.
5.2. Commands The AEROCET 831 provides serial commands for accessing stored data and settings. All commands are terminated by a carriage return. Also, these commands are not case sensitive. The following tables list the available commands. These commands are available via USB. The settings (baud rate, parity and stop bits) must match the computer setting.
5.3. Real Time Output The AEROCET 831 outputs real time data at the end of each sample. The output format is a comma separated values (CSV). The following sections show the format. 5.4. Comma Separated Value (CSV) A CSV header is included for multiple record transfers like Display All Data (2) or Display New Data (3).
6.2.3. Annual Calibration The AEROCET 831 should be sent back to Met One Instruments yearly for calibration and inspection. Particle counter calibration requires specialized equipment and training. The Met One Instruments calibration facility uses industry accepted methods such as ISO and JIS.
Cycle and test the battery 6.3. Flash Upgrade Firmware can be field upgraded via the USB port. Binary files and the flash program must be provided by Met One Instruments. Troubleshooting The following table covers some common failure symptoms, causes and solutions. Symptom...
1.74 lbs – 28 ounces – (0.79 kg) Weight Environmental Operating Temperature 0º C to +50º C Storage Temperature -20º C to +60º C Accessories Battery charger / adapter USB Cable Operation manual Comet software AEROCET 831 Manual Rev A Page 16...
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