8301-AQM and 8302-AQM Handheld
Air Quality and Environmental Monitor

Indoor Air Quality Monitors

Models 8301-AQM and 8302-AQM 

(CO2, Temp, RH, and TVOC)

The Particles Plus® 8301-AQM and 8302-AQM Series Handheld Particle Counter and Environmental Monitor measures 0.3 to 25 µm particles with mass concentration and stores indoor air quality measurements of temperature, relative humidity, CO2, and TVOC in the 8302-AQM. This instrument is the most versatile handheld Air Monitor available, with advanced power management and the industry’s first sleep mode, allowing for battery operation of periods that can exceed a month on a single charge. The AQM Series can be used as a stand-alone battery operated instrument or it can be easily integrated into a building automation and facility monitoring system via Ethernet, USB or (optional) Wireless 802.11 b/g, RS485 or RS232 connection.

The AQMs reports and displays 6 user-selectable particle size channels, as well as carbon dioxide (CO2), temperature, and relative humidity. The model 8302-AQM includes a PID Sensor for TVOC. The instrument monitors PM1, PM 2.5, PM5, PM 10 & TPM (and any other PM size value the user specifies) with an easy-to-use Channel Management control panel. The instrument also monitors flow, sensor status, date of last calibration, serial number, laser on-time, and date of manufacture for easy maintenance and warranty management.

User friendly field calibration for the integrated environmental sensors allows for single or dual point offsets, and ensures accuracy for air quality investigations. View data and generate environmental reports real-time on screen, via printer or USB key, or export to Particles Plus® Instrument Management Software. Particles Plus® instruments can be controlled and monitored remotely via web browser from any PC, tablet or smartphone supporting 20 concurrent user sessions.

The 8301-AQM and 8302-AQM store up to 45,000 time stamped particle count and environmental data records which provides data redundancy on every instrument. The AQMs mass concentration mode approximates density in µg/m³ and allows for density and refractive index corrections to ensure accuracy. All Particles Plus® counters meet ISO 21501-4 and JIS B9921. The 8301-AQM ensures compliance and accuracy with an on-board pulse height analyzer. 

Measures mass concentration in μg/m³ and indication of PM (Particle Matter)
Measures up to 6 channels of simultaneous data
Measures CO2, Temperature and Relative Humidity with user alarm set-points
Measures TVOC in parts per billion (Model 8302-AQM)
User adjustable single and two point sensor calibration offset
User-selectable channel sizes
Long-life laser diode technology
Internal 0.1 CFM (2.83 LPM) vacuum pump
Large easy-to-use icon driven color touch screen display
Stores up to 45,000 sample records, 1,000 sample locations, and 50 recipes
Easy configuration and transferable from instrument to instrument
Connect using Ethernet, USB or (optional) Wireless 802.11 b/g, RS485 or RS232
Static or dynamic IP address (DHCP)
Displays and externally prints environmental reports
Internal audible alarm with user selectable thresholds for all environmental parameters
User-definable reports
Allows for ASHRAE 62 ventilation testing
Ideal for Ventilation rate monitoring
Complies with ISO 21501-4 and JIS B9921 standards
Easy to clean and wipe down with minimal particle traps
Seamless integration into a facility monitoring system
Lightweight high-impact injection molded plastic enclosure
2 year warranty. Extended warranties available.
Size Range0.3 to 25 μm
Size ChannelsFactory calibrated at 0.3, 0.5, 1.0, 2.5, 5.0, 10.0 µm variable binning
Flow rate / Accuracy0.1 CFM (2.83 LPM) / +/- 3%
Aerosol Concentration Range0.01 to 20,000 µg/m³
Light SourceLong life laser diode
Resolution.00000003 mg/m3
Zero StabilityNo appreciable drift
Count ModesReal-Time Meter and graph, cumulative/differential count/m³ and count/ft³, and mass concentration (PM)
Log IntervalMinimum 1 second with no hold time, maximum 99 hours
CalibrationNIST traceable
Display4.3" (10.9 cm) WQVGA (480x272) color touch screen
Printer (Optional)Optional external thermal printer available. Prints in all available languages.
Internal Vacuum PumpInternal pump with automatic flow control
Filtered ExhaustInternal HEPA filter
Number of Channels6
Custom Size ChannelsCalibration for custom size channels available
Audible AlarmAdjustable built-in alarm
Communication ModesEthernet, USB. (Optional) Wireless 802.11 b/g, RS485 or RS232.
Environmental Sensors 8301-AQMIncludes NDIR CO2 (0-5000 ppm, resolution 1 ppm, accuracy ±1% FS, Response rate 20 seconds), temperature and relative humidity probe 32º to 122ºF (0º to 50ºC) ±1ºF (0.5ºC), 15-90% ±2% relative humidity ISO 21501-4 and JIS B9921
Environmental Sensors 8302-AQMIncludes all sensors in the 3301-AQM and TVOC PID (standard on the 5302-AQM), 0-50 ppm / minimum detection level 5 ppb, accuracy ±1.5%, Response rate <3 seconds
AlarmAlarms on counts for all particle sizes, low battery, sensor failure, environmental sensors and flow
StandardsISO 21501-4 and JIS B9921
Instrument CalibrationRecommended minimum once per year. Gases, temperature and humidity sensors field calibratable.
External SurfaceLightweight high-impact injection molded plastic enclosure
Dimensions (L x W x H)10” x 6.3” x 4.5” (25.4 cm x 16.0 cm x 11.4 cm) includes handle and does not include probes
Weight2.5 lb (1.1 kg)
AccessoriesOperating Manual and IMS Software on USB flash drive, isokinetic probe, temperature relative humidity sensor, purge filter, battery, USB cable, and power supply
Optional AccessoriesCalibration cap for gas sensors, carrying case, external printer, isokinetic probes, barb fittings, spare battery, external battery charger, printed manual, and IMS-RT monitoring system
Data Storage45,000 sample records (rotating buffer) including particle count data, environmental data, locations, annotations, and times. Scrollable on screen or printout.
Sample Time1 second to 99 hours
Power110 to 240 VAC 50/60 Hz universal in-line power supply
Operating Conditions41º to 104ºF (5º to 40ºC) / 20% to 95% non-condensing
Storage Conditions32º to 122ºF (0º to 50ºC) / Up to 98% non-condensing
Warranty2 year limited warranty. Extended warranties available.