P-TRAK® - Ultrafine Particle Counter

The TSI's P-TRAK® Ultrafine Particle Counter (UPC) is a totally new approach to eliminating IAQ problems. This portable instrument detects and counts ultrafine or nanoparticles (smaller than 1 micrometer in aerodynamic diameter) that often accompany or signal the presence of a pollutant that is the root cause of complaints. It is now being used to track down some of the most difficult IAQ problems imaginable.

The P-TRAK UPC locates obvious pollutant sources such as boilers, furnaces, vehicles and also detects the not-so-obvious sources such as photocopy machines and printers. Use this instrument to detect the migration of toxic exhaust gases, malfunctioning office equipment, pinhole gasket leaks in boilers and a wide variety of other problems.


Concentration Range : 0 to 5 × 105 particles/cm3
Particle Size Range: 0.02 to greater than 1 micrometer

Temperature Range
0 to 38°C
Storage: -40 to 70°C

Flow Rate
100 cm
Total: 700 cm
3/min (nominal)

Power Requirement
Battery type:
6 AA alkaline
Battery life: 6 hrs at 70°F (21°C)

Alcohol Requirement
100% reagent grade isopropyl
Hours per charge 8 hours at 21°C
RS232 Output: Baud rate 9600

Single points:
Data logging: 1,000 hours at one-minute intervals. A maximum of 141 separate tests.
Size: 27 cm × 14 cm × 14 cm

Factory Recalibration Interval One year
Computer Requirements PC with Microsoft Windows
® 95, 98, or NT, Me, 2000 or XP; Windows-compatible printer; 5 MB hard disk space; and available RS232 serial port (for downloading)

DATASHEET» PTrak_8525.en.pdf (1025kB)