Compteur de particules

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

Only two front-panel buttons control the size channels and sample cycle. The side-mounted power switch allows for convenient thumb operation.

Battery or AC Powered

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 Whatever your particular needs,
• the right choice is only natural.

Specifications

OPERATING PRINCIPLE
Counts individual particles using scattered laser light
PERFORMANCE
Particle Size Range Concentration Range Accuracy Sensitivity Flow Rate Sample Time Hold Time	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 0.3 µm 0.1 cfm (2.83 lpm) Adjustable: 6 to 999 seconds Adjustable: 1 to 999 seconds
ELECTRICAL
Light Source Power AC Adapter/Charger Communications Certifications	Laser diode, 35 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
INTERFACE
Display Keyboard	16-character * 4-line LCD 7-key membrane type
PHYSICAL
Size Weight	Height = 6.25” (15.9 cm) Width = 4.0” (10.2 cm) Thickness = 2.1” (5.4cm) 1.94 lb - 31 oz (0.88 kg)
ENVIRONMENTAL
Operating Temperature Storage Temperature	0º to +50ºC -20º to +60ºC
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 • 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)
METGT521 - 0	Handheld Particle Counter