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Cup Vane Anemometer (AM-4257SD) with Data Logging

Model #: AM-4257SD

UPC: 0810106420974

Condition: New

Regular Price: $429.95 $299.00

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Lutron Cup Style Anemometer with Data Logging


  • Cup anemometer, designed especially for exterior air speed and temperature
  • Automatic temperature compensation for measurement and recording.
  • Type K and J temperature ports
  • Air velocity measurement units:
    • Mile/ h, miles per hour MPH
    • Knots. nautical miles per hour
    • m/ S, meters per second
    • Ft/ min, feet per minute FPM
    • Km/ h, kilometers per hour
  • Air temperature measures in either degrees Celsius or Fahrenheit
  • Type K and Type J thermocouple thermometer ports
  • Data Output RS-232 to USB PC computer interface
  • Real time SD memory card Datalogger with Built-in time and date stamp, sampling time can be set from 1 second to 3600 seconds
  • Data hold will freeze current reading
  • Recall minimum and maximum reading
  • Fold out easel back allowing meter to sit upright on a flat surface
  • Brass threaded tripod mount
  • Automatic temperature compensation


  • Air velocity range:
    • m/S: 0.9 to 35, 0.1 resolution (accuracy within 2% +0.2 m/S)
    • Km/h: 2.5 to 126.0, 0.1 resolution (accuracy within 2% +0.8 Km/h)
    • Knots: 1.4 to 68.0, 1 resolution (accuracy within 2% +0.4 Knots)
    • Ft/min: 144 to 6895, 0.1 resolution (accuracy within 2% +40 Ft/min)
    • MPH: 1.6 to 78.2, 0.1 resolution (accuracy within 2% +0.4 MPH)
  • Air temperature: 32° to 122°F (0° to 50°C) with 0.1° resolution
  • Air temperature accuracy is within: 1.5°F (0.8°C)
  • Sampling time: approximately 1 second
  • Operating Temperature (ambient): 32° F to 122° F
    NOTE most batteries are not rated for below -4° F or above 125°F
  • Operating Humidity: less than 85% RH, non-condensing
  • Power supply: (6) AA alkaline batteries or optional 9 volt DC Adapter AP-9V110
  • Power current:
    • without SD card saving data and back-light off: 15mA DC
    • With SD card saving data and back-light off: 36mA DC
      Note: add 11mA DC when back-light is on
  • Weight (meter only): 12.1 ounces (347 grams)
  • Dimensions:
    • Meter: 7.1" x 2.9" x 1.9" (182 x 73 x 47mm)
    • Cup vane (3 cups with arm): 5.3" (135mm) diameter

Supplied with:


  • SD Card (from 1 to 16 GB)
  • AC to DC adapter AP-9V110
  • RS-232 cable UPCB-02
  • USB cable USB-01
  • Type K or Type J thermocouple probe

Lutron Certificate of Calibration

These meters arrive brand new from Lutron with their factory calibration certificate enclosed. Until our chain of custody is broken we are certain and guaranty that every meter meets this standard. InspectUSA would need to ship the new meter directly to your NIST lab, with the guaranty it would meet NIST standards. We must ship the instrument direct to an approved NIST lab for this guaranty. Once the chain of custody is broken for whatever reason, this guaranty is no longer valid.

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