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    testo 425 - Hot wire anemometer

    0560 4251
  1. Telescoping hot wire probe
  2. Measures velocity, volume flow (CFM), and temperature
  3. Timed and multi-point average flow calculations
  4. Auto-off function saves battery life
    5. Product no longer available. Have you checked out its successor?
    Why not enjoy the benefits that it has to offer: >> To the product
    The testo 425 hot wire anemometer provides incredible accuracy and is easy to use. The telescoping handle of this CFM meter extends to 33 inches, putting even high-up ductwork within reach. The testo 425 anemometer is ideally suited for low flow and velocity applications, and provides accurate, fast, and easy readings.
    • Min/Max/Average values make comparisons fast and easy
    • Compact thermal sensor is ideal for in-duct readings
    • Measures air velocity from 0 to 4000 FPM
    • Bright backlit display provides easy viewing in any environment

    testo 425 thermal anemometer with permanently attached flow probe including temperature measurement and telescope (max. 820 mm), calibration protocol, and battery

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    13. Temperature - NTC

    Measuring range
    -4° to 158 °F / -20 to +70 °C
    Accuracy
    ±1.3 °F (Remaining Range) / ±0.7 °C (Remaining Range)
    ±0.9 °F (32° to 140 °F) / ±0.5 °C (0 to +60 °C)
    Resolution
    0.1 °F / 0.1 °C

    Velocity - Thermal anemometer

    Measuring range
    0 to +3937 fpm / 0 to +20 m/s
    Accuracy
    ±(5.91 fpm + 5 % of mv) / ±(0.03 m/s + 5 % of mv)
    Resolution
    1.97 fpm / 0.01 m/s

    General technical data

    Weight
    10 oz. / 285 g
    Dimensions
    7 x 3 x 2 in. / 182 x 64 x 40 mm
    Operating temperature
    -4° to 122 °F / -20 to +50 °C
    Housing
    ABS
    Battery type
    9V block battery, 6F22
    Battery life
    20 h
    Storage temperature
    -40° to 158 °F / -40 to +70 °C

    Accessories

  13. Accessories
    9V rech. battery for instrument
    9V rechargeable battery for instrument
      :
      0515 0025
    • Accessories
      Soft case for measuring instrument
      Case for instrument
        :
        0516 0210
        $ 55.00
        1
      • Accessories
        TopSave
        TopSafe, protection from impact and dirt
          :
          0516 0221
          $ 56.00
          1

          • Cases

        • Cases
          testo 0516 1200 case
            :
            0516 1200
            $ 89.25
            1
          • Cases
            testo 0516 1201 case
              :
              0516 1201
              $ 63.75
              1