Bench unit performance in the palm of your hand.
Big Performance, Small Size
The GT-521S 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 datalog 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.
||Counts individual particles using scattered laser light
|Particle Size Range
||Two channels—from 0.3 to 5.0 μm (selectable in 0.1 μm increments)
||0 – 3,000,000 particles per cubic foot (105,900 particles/L)
||± 10%, to calibration aerosol
||0.1 cfm (2.83 lpm)
||Adjustable: 6 to 999 seconds
||Adjustable: 1 to 999 seconds
||Laser diode, 30 mW, 780 nm
||6V Ni-MH self-contained battery pack—provides 8 hours of typical intermittent operation, up to 5 hours continuous use
||AC to DC module, 100 – 240 VAC to 9 VDC @ 350 mA typical
||RS-232 or RS-485 Half Duplex
||Meets or exceeds CE, ISO, ASTM, and JIS international certifications
||16-character × 4–line LCD
||7-key membrane type
||Height = 6.25" (15.9 cm) Width = 4.0" (10.2 cm) Thickness = 2.1" (5.4 cm)
||1.94 lb - 31 oz (0.88 kg)
||0° to +50°C
||-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