testo 308

testo 308 is the instrument for easy electronic soot count measurement. It records the soot count digitally to one decimal space with constant sampling. The powerful LED backlighting guarantees good legibility even under poor light conditions. The instrument excels through its easy menu structure and ergonomic pistol grip. testo 308 achieves high accuracy thanks to the heating of the measurement spot, thus avoiding measurement errors due to condensation. The infrared interface allows wireless communication with an IrDa printer, a flue gas analyzer and a Pocket PC.

  • Easy, self-explanatory menu
  • Clear segment display
  • LED display illumination
  • Easy IR printout
  • Integrated condensate trap (evacuable)
  • Integrated dirt filter (exchangeable)
  • TÜV tested
  • Additional soot count determination on filter paper
  • Li-ion battery, (2600 mA, 45 individual measurements), chargeable inside or outside the instrument
  • Operation with mains unit possible
  • Battery and charger from testo 327 and testo 330 can be used
  • BLUETOOTH interface (optional)*
  • Easy exchange of soot filter roll
  • Spare battery chargeable separately or in instrument
  • Protection class IP40
Display Segment display with background illumination
Storage temperature -20 to +50 °C
Operating temperature 0 to +40 °C
Weight 600 g
Dimensions 270 x 63 x 120 mm



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