MetOne GT-521S handheld particle meter

MetOne Handheld Particle Counter GT-521S

Manufacturer: MetOne – USA

Model: GT-521S

1. Device Description:

The Met One GT-521S is a handheld, two-channel particle counter that operates on battery power.

The two counting channels can be configured to measure standard particle sizes calibrated at the factory or user-selected sizes ranging from 0.3 to 10 microns.

The GT-521S features a simple menu-driven control system. It allows users to set particle sizes, sampling times, alert settings, and basic setup parameters such as date/time and connectivity with a single touch of a button.

The device can be operated remotely via USB (cable included) or RS-232/RS-485 (optional cable) for full control of all machine functions.

It can store up to 8,000 measurement results, including data from the temperature/humidity probe (accessory PN G3120). Sample history can be viewed on the LCD screen, printed (accessory PN G3115), and downloaded to a computer.

The GT-521S comes with a battery that supports up to 24 hours of normal operation or 10 hours of continuous operation on a single charge, with a recharge time of approximately 2.5 hours.

Technical Specifications:

• Performance:

  • Particle size range: 0.3 µm to 10 µm, 2 channels

  • Standard particle sizes: 0.3 µm; 0.5 µm; 1.0 µm; 2.0 µm; 5.0 µm; 10 µm

  • Custom particle sizes: 0.1 µm steps from 0.3 µm to 2.0 µm; 0.5 µm steps from 2.0 µm to 10.0 µm

  • Particle concentration range: 0 to 3,000,000 particles/CF (105,900 particles/Liter)

  • Accuracy: ± 10% when calibrated with aerosol

  • Sampling flow rate: 0.1 CFM (approximately 2.83 liters/minute)

  • Memory capacity: 8,000 samples

• Power Supply:

  • Light source: Laser diode, 90mW, 780 nm

  • Battery: Rechargeable Li-Ion 7.4V, 2200 mAh

  • Battery operation time: Up to 6 hours of continuous measurement; full recharge time approximately 2.5 hours

  • Charging source: 100-240 VAC, 50/60Hz

  • Connectivity: USB, RS232, or RS485 for computer connection

• Standards: ISO 21501-4 and CE

• Display and Interaction:

  • Screen: LCD 16 characters, 4 lines

  • Keyboard: 7 soft buttons

• Dimensions:

  • Size (WxDxH): 10.2 x 5.4 x 15.9 cm

  • Weight: 0.91 kg

• Environmental Conditions:

  • Operating environment: 0 - 50°C

  • Storage environment: -20 - 60°C

Includes:

• Main unit: GT-521S

• Operation Manual (PN GT-521S-9800): English user manual

• Comet Software CD (PN 80248): Data management software

• Calibration Certificate (PN GT-521S-9600): Manufacturer's calibration certificate

• Battery Charger (PN 390031): Battery charger

• Power Cord (PN 400113): Charging cable

• Iso-Kinetic Inlet Sample Probe (PN G3110): Sample inlet probe

• Zero Count Filter (PN G3111): Zero count filter

• Carrying Case (PN 8517): Carrying case

• USB Cable (PN 500787): USB connection cable

Optional Accessories:

• Printer (PN G3115): Thermal printer for results

• Flow Meter (PN 9801): Airflow rate testing device

• Serial Cable (PN 3228): Data connection cable

• T/RH Probe (PN G3120): Temperature/humidity probe