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GT-526S Handheld Particle Counter - Met One Instruments

Handheld Particle Counter GT-526S

Met One Instruments’ GT-526S is a full-featured, six-channel battery-operated, portable particle counter that provides the functionality of a bench unit with the convenience of a handheld. The six-channels can be configured to factory calibrated standard sizes or user defined custom sizes. The 526S has two alarm limits and several communications options. It can store up to 8,000 samples including temperature and relative humidity if the optional sensor is connected. Sample history can be viewed on the unit’s display or printed if the optional printer is connected.

Operations / Interface

The GT-526S has six programmable particle sizes which the operator can set from 0.3 to 10 microns. The 526S can store up to 8,000 sample events. These history events can be viewed, printed on the optional printer and download to a computer using Comet software or simple ASCII terminal commands. The GT-526S has two programmable count alarm limits. Alarms are indicated by a displayed message and an alarm flag in the data file. Our-526S is battery powered with 24 hours of typical (intermittent) operation or 10 hours of continuous operation from a single charge. Recharge time is approximately 2.5 hours. A temperature / relative humidity plug-and-play sensor option immediately adds ambient temperature and relative humidity data to the displayed and logged data.


  • User size selectable
  • All 6 channels counted and recorded at one time
  • Menu driven command set for out of the box operation
  • Bench unit performance in a handheld
  • Affordable



  • Operation Manual
  • Comet Software
  • AC Adapter / Battery Charger
  • Iso-kinetic Sample
  • Carrying Case
  • Zero Particulate Filter
  • NIST Certificate of Calibration


  • RH & Temperature Probe (P/N G3120)
  • Flow Meter (P/N 9801)
  • Custom Serial Cable (P/N 3228)
  • Portable Printer (P/N G3115)
  • Particle View Software (P/N Particle View)
  • ISO Cal 21501-4 (P/N 80849)
  • Wall / Tripod Mount (P/N 8956-4)


Specifications are subject to change at any time.
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