Back | Next | Home
Missoula Technology &
Development Center
|
Table
of Contents Back | Next | Home |
Missoula Technology & Development Center |
Evaluation of Optical Instruments for Real-Time Continuous Monitoring of Smoke Particulates
| RTAA800 Real-Time Aethalometer | Andersen Instruments, Inc. 500 Technology Ct. Smyrna, GA 30082 Home Page: http://www.Anderseninstruments.com |
|---|---|
| Flow Rate | 2 to 6 L/min, user adjustable 0- to 10-L/min mass flow meter standard. |
| Analysis time base | 2 s to 1 h. |
| Pump | Internal diaphragm pump. |
| Optoelectronics | Analysis at 880 nm, 22-bit A/D. |
| Display | Four-line LCD panel with keyboard and status indicator lamps. |
| Processor | Embedded 386-class computer, program and operating parameters stored in EPROM. |
| Size and weight | 10.5 x 12.5 in (rack mount), 20 lb. |
| Power requirements | 110 V, 69 Hz, 100 W. |
| Data output | 3.5-in floppy disk, RS-232, analog outputs. |
| Filtration medium | 15-m roll of quartz fiber tape. |
| PQ200A Air Sampler | BGI, Inc. PQ200A Air Sampler 58 Guinan St. Waltham, MA 02451 Home Page: http://www.bgiusa.com |
|---|---|
| Filter | 2 µm, 47-mm Teflon. |
| Flow Rate | 16.7 L/min. |
| EPA designed-specific hardware | EPA omnidirectional ambient particle inlet. Inlet sample transport tube. EPA PM2.5Well Impactor Ninety-Six (WINS). 47-mm filter holder assembly, 47-mm Teflon. |
| Weight of enclosure | 48 lb. |
| Weight without battery | 40 lb. |
| Dimensions | 16 x 19 x 18in. |
| Height of inlet above ground | 6.57 ft. |
| EPA performance-specified and PQ200 featured hardware | Ambient temperature sensor range of -30 to +50°C ±0.16°C. Ambient barometric pressure sensor. Volumetric flow control and measurement system. Microprocessor. RS-232 communication. |
| GT-640 Logger Particulate Monitor | Met One Instruments 1600 Washington Blvd. Grants Pass, OR 97526 Home Page: http://www.metone.com |
|---|---|
| Range | 0 to 10,000 µg/m³. |
| Sensitivity | 1 µg. |
| Accuracy (1 min) | 2-percent concentration 0.000 to 1.000 mg. |
| Accuracy (1 h) | 1-percent concentration 0.000 to 1.000 mg. |
| Particulate data period | 1-min standard (1- to 60-min option). |
| Logger sample | Once per second. |
| Logger data period | Selectable 1,5,15,60 min. |
| Flow rate | Up to 5 L/min (depending on inlet). |
| Power | 12 V dc, 1 A (including inlet heater) from external battery or using No. 3813 universal power supply. (No. 3813 supply accepts 90 to 264 V ac, 47- to 63-Hz power sources). |
| Operating temperature range | 0 to 50 °C with internal heater, 0- to 100-percent relative humidity with inlet heater. |
| Outputs | RS-232 for modem, radio, or direct connection to PC. |
| Alarm channels (optional) | Two with relay contacts (normally open) (maximum power 24 V dc at 20 mA). |
| Analog output (optional) | 0 to 1 V analog, 0 to 1 mg/m³. |
| Data storage | 210 days at 1-h data period. |
| DataRam | MIE, Inc. 7 Oak Park Bedford, MA 01730 Home Page: http://www.mieweb.com |
|---|---|
| Concentration measurement ranges | 0.1 to 999.9 µg/m³ (resolution: 0.1 µg/m³). 1.0 to 39.99 mg/m³ (resolution: 0.1 mg/m³). 40.00 to 399.99 mg/m³ (resolution: 0.1 mg/m³). |
| Wave length | 880 nm. |
| Scattering coefficient ranges | 1.5 x 10^-7 to 6 x 10^-1 m^-1. |
| Concentration display averaging/updating time | 1 to 10 s. |
| Instrument comparison/repeatability | ±0.3 µg/m³ for 10-s average, ±1.0 µg/m³ for 1-s average. |
| Accuracy | ±5 percent of reading ± precision. |
| Temperature coefficient of zero level | Less than 0.05 µg/m³ per degree Celsius. |
| Particle size range of maximum response | 1.2 to 10 µm. |
| Sampling flow rate | 1.7 to 2.3 L/min. |
| Data logging averaging points | 1 s to 4 h. |
| Total number of data points in memory | 20,000 (each point: average, minimum, and maximum concentrations). |
| Real time and date data | Seconds, minute, hours, day of month, month and year, with leap year compensation. |
| Clock accuracy | ±1 min/month or better. |
| Digital output | RS-232, 9,600 baud, 8 data bits, 1 stop bit, no parity bits. |
| Operating environment | 0 to 40 °C (32 to 104 °F), 0 to 95 percent relative humidity. |
| Dimensions | 134 (5.28) x 184 (7.25) x 346 (13.63) mm (in) (H x W x D). |
| Weight | 5.3 kg (11.7 lb). |
| NGN-3 Open-Air Integrating Nephelometer | Optec, Inc. Open-Air Integrating Nephelometer 199 Smith St. Lowell, MA 49331 Home Page: http://www.optecinc.com |
|---|---|
| Extinction range | 0 to 32,768 count (serial output); 0 to 10 V (analog channel 1 or 2). |
| Resolution | ±1 count (serial output; one Rayleigh is equal to 12 counts). ±2.44 mV (analog channel 1 or 2; one Rayleigh is equal to 12 mV). |
| Accuracy | ±10 percent of true value for air near Rayleigh and using 2 min of integration. |
| Measured wavelength | 550 nm center wavelength, 100-nm bandwidth (photopic response). |
| Output, serial | RS-232, RX, TX, GND; 8 data bits, 1 stop bit, no parity. Televideo 920 emulation, full-duplex mode 9,600-baud default, others selectable. |
| Output data, serial | Status, raw scattered light count, raw lamp brightness count, normalized scattered light count, integration time in minutes, temperature, date (year:month:day), time (hour:minute). |
| Output data, analog | Channel 1, normalized scattered light. |
| Output data, analog | Channel 2, status value. |
| Power supply | 13.8 ±0.3 V dc, 4.5 A, regulator required. |
| Operating temperature | -20 to 45 °C. |
| Size | 10.7 x 8.2 x 16.5 in. |
| Weight | 27 lb. |
| Meteorological sensors temperature | ±0.5 °C from -30 to +70 °C. |
| Humidity | ±2 percent relative humidity from 0- to 100-percent relative humidity at 25 °C. |
| M903 Nephelometer (ROM version 2.37) | Radiance Research 535 NW. 163 St. Seattle, WA 98177 |
|---|---|
| Principle parameter | Light-scattering extinction coefficient, integrating nephelometer. |
| Range | 0 to 1 per km |
| Lower detection | Less than 0.001 per km at 30-s average. |
| Outputs | Four analog (0- to 5-V dc) and RS-232 serial, baud rate selectable, 9,600, 4,800, 2,400, 1,200. |
| Time constant | Adjustable: 2 to several minutes. |
| Electronics | Computer-based, MD68HC11 at 8 MHz operating parameters, diagnostics through serial port, three sets of default operating parameters selected with panel switches. |
| Optics | No lenses. Reference brightness measurement and chopper-stabilized span. Chopper rate adjustable (typically, 20-percent duty cycle). |
| Wavelength | 530 nm. |
| Sample volume | 0.44 m³. |
| Weight | About 2.6 kg (6lb) depending on application configuration. |
| Size | 56 x 13 x 17 cm (L x W x D). |
| Operating voltage | 12 V dc (0.8 or 1 A supplied). |
| Power usage | 2.5 to 3 W (230 mA at 12 V dc) without fan at maximum flash rate; less power at lower flash rates. The supplied fan is 0.8 W. |
| Selected averaging periods | 20 s to 1 h. |
| Internal data storage | Diagnostic parameters, zero and span settings and time stored in RAM. |
| Internal clock | Two weeks of 5-min averages can be stored. |
| Inhouse Filter System | USDA FS, Rocky Mountain Research Station Fire Chemistry Group P.O. Box 8089 Missoula, MT 59807 Phone: 406–329–4866 |
|---|---|
| Flow rate | 28 L/min. |
| Filter medium | 37-mm Teflon filter. |
 E-mail: wo_mtdc_webmaster@fs.fed.us |
Back | Next Table of Contents |
Missoula Technology & Development Center |