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    testo 425 - Hot wire anemometer

    Product no. 0560 4251
    Testo 425
    testo 425
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    +1-484-773-0111
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    Your advantages
  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
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    Description

    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

    Delivery Scope

    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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    8. Technical data

    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

    Accessories

  8. Accessories
    9V rech. battery for instrument
    9V rechargeable battery for instrument
      Product no.:
      0515 0025
    • Accessories
      Soft case for measuring instrument
      Case for instrument
        Product no.:
        0516 0210
        $ 57.00
        1
      • Accessories
        TopSave
        TopSafe, protection from impact and dirt
          Product no.:
          0516 0221
          $ 58.00
          1

          • Cases

        • Cases
          testo 0516 1200 case
            Product no.:
            0516 1200
            $ 102.00
            1
          • Cases
            testo 0516 1201 case
              Product no.:
              0516 1201
              $ 73.10
              1

              • Downloads

              Product brochures

              Operating instructions

              Mail Contact
              PhoneCall +1-484-773-0111 +1-484-773-0111