Big Performance, Small Size
The GT-521 is a full-featured, battery-operated, portable laser particle counter that provides the functionality of a bench unit with the convenience of a handheld! It can data log particle counts continuously or send them to a network.
Dual Programmable Particle Channels
Two programmable particle channels with a range of 0.3 – 5.0 microns each show differential or cumulative particle counts in real time, with selectable count units.
Simple and Powerful Menu-Driven Command Set
A simple touch of a button sets particle sizes, sample time, alarm settings, and basic setup parameters such as date/time and communications settings. Remote operation via RS-232 or RS-485 communications ports allows extensive control, including all front-panel operations.
Flexible Data Interfaces
Stores up to 4,000 records for printer output, Excel® formatted output, or networked datalogging via the included single computer software (GT-Comm).
Temperature and Relative Humidity Option
A plug-and-play option that immediately adds ambient temperature and relative humidity capabilities to the displayed and logged data.
|Particle Size Range||Two channels—from 0.3 to 5.0 μm (selectable in 0.1 μm increments)|
|Concentration Range||0 – 3,000,000 particles per cubic foot (105,900 particles/L)|
|Accuracy||± 10%, to calibration aerosol|
|Flow Rate||0.1 cfm (2.83 lpm)|
|Sample Time||Adjustable: 6 to 999 seconds|
|Hold Time||Adjustable: 1 to 999 seconds|
|Light Source||Laser diode, 30 mW, 780 nm|
|Power||6V Ni-MH self-contained battery pack—provides 8 hours of typical intermittent operation, up to 5 hours continuous use|
|AC Adapter/Charger||AC to DC module, 100 – 240 VAC to 9 VDC @ 350 mA typical|
|Communications||RS-232 or RS-485 Half Duplex|
|Certifications||Meets or exceeds CE, ISO, ASTM, and JIS international certifications|
|Display||16-character × 4–line LCD|
|Keyboard||7-key membrane type|
|Size||Height = 6.25″ (15.9 cm) Width = 4.0″ (10.2 cm) Thickness = 2.1″ (5.4 cm)|
|Weight||1.94 lb – 31 oz (0.88 kg)|
|Operating Temperature||0° to +50°C|
|Storage Temperature||-20° to +60°C|
Custom Serial Cable
Communication Software (GT-Comm)
AC to DC Converter Module with IEC AC Power Cord
Isokinetic Sample Probe
Zero Particulate Filter
|Optional||RH & Temperature Probe (Met One Part Number G3120)
Flow Meter (Met One Part Number 9801)
Portable Printer (Met One Part Number G3115)