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testo 308 - Smoke tester

0632 0308
  • Fully automatic soot count measurements
  • User-friendly menu guide; easy-to-read, backlit display; easy-to-change soot filter rolls
  • TÜV certified
  • Optional print out on site
  • The testo 308 is designed to provide you with quick and easy soot particle measurements. Gone are the days of manual or semi-manual measurements. Benefit from groundbreaking technology. The testo 308 smoke tester provides you with digital readings for easy documentation.

    There’s a rule that generally applies for all oil heating systems: the less soot there is, the better the combustion. That’s why soot count measurements are an integral part of the work carried out by heating engineers.

    What your testo 308 smoke tester has to offer

    Manual or semi-manual measurement systems are an extremely time-consuming and laborious method of determining the number of soot particles. Not only that, such measurements are often inaccurate and difficult to document too. The state-of-the-art testo 308 digital smoke meter can help you to solve not one, not two, but a whole bunch of problems in one fell swoop.

    The testo 308 smoke meter measures the number of soot particles using the old manual method, the filter test. The difference that makes all the difference, however, is that this is performed fully automatically. The results are then presented as a digital reading on the tester’s backlit display providing you not only with extremely reliable readings, but saving you precious time too.

    The optional testo turbo printer can be used to print out on site via the smoke tester’s infrared interface for quick and easy documentation.

    testo 308 smoke tester, rechargeable battery, calibration certificate.

    General technical data

    Weight
    600 g incl. battery
    Dimensions
    270 x 63 x 120 mm
    Operating temperature
    0 to +40 °C
    Protection class
    IP40
    Pump capacity
    1.63 ± 0.1 l
    Reference filter
    at 990 mbar and +20 °C ambient temperature
    Gas sampling
    Stainless steel pipe ca. 220 mm, rubber hose 100 mm
    Standards
    EU-guideline 2004/108/EG
    Display function
    Segment display
    Display ligthing
    with background illumination
    Storage battery type
    Lithium ion battery, 2600 mA
    Battery life
    45 individual measurements
    Battery charge
    in the instrument via mains unit or externally by charger
    Storage temperature
    -20 to +50 °C

    Product sets


    Measuring the flue gas parameters of the burner (CO, O2, and temperature, etc.)

    The soot count is an important performance characteristic and in many countries an established measuring requirement. In the case of oil heating systems, this is carried out before the actual flue gas loss and CO/CO2 measurement. The soot count is a primary indicator of the quality of combustion in an oil heating system: the less soot there is, the better the combustion. Soot is a black solid comprising up to 99.5% carbon. The level of soot contamination in flue gas is established by the degree of blackening of a measurement spot on white filter paper.

    The defined flue gas quantity of 1.63 l is removed through a probe shaft by means of a manually operated hand pump, or semi-automatic and electronic measuring instrument and hits the filter paper. The blackening on the filter paper is then compared with the 10 grey shades of a soot count scale.

    This measurement is taken three times in a row to establish an average value and allow comparison with the maximum permitted soot count; this is significant for determining the operational reliability and therefore approval of an oil heating system.

    The soot spot can also be tested for oil deposits by dripping acetone on the edge of the spot. If a yellow discolouration is discerned on the soot measurement spot, this indicates oil deposits.

    testo 308