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• Bench unit performance in the palm of your hand.

• 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 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.

Applications:

Controlled

Environments

Indoor Air Quality

Process Control

HVAC Applications

Filter Testing

Compliance Testing

Emission Sourcing

Remote Sampling

QA Programs

PERFORMANCE

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

Sensitivity 0.3 μm

Flow Rate 0.1 cfm (2.83 lpm)

Sample Time Adjustable: 6 to 999 seconds

Hold Time Adjustable: 1 to 999 seconds

ACCESSORIES

Supplied Operation Manual

Custom Serial Cable

Communication Software (GT-Comm)

AC to DC Converter Module with IEC AC Power Cord

Isokinetic Sample Probe

Screwdriver

Carrying Case

Optional

RH & Temperature Probe (Met One Part Number G3120)

Flow Meter (Met One Part Number 9801)

Portable Printer (Met One Part Number G3115)