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Connector Type
RS232 Connectors
SD Card Connectors
Sensor Type
Temperature / Freeze
Tool Type
Temperature Measurement
Wind Measurement
SD Card
Serial - RS-232
Auto-Shut Off
Battery Operated
LCD Display
Ease of Installation
Beginner (Installs < 10 minutes)
Extech Instruments
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Measures Air Velocity and Temperature Simultaneously
Extech Instruments SDL300 Metal Vane Thermo-Anemometer Datalogger
Extech Instruments SDL300 Metal Vane Thermo-Anemometer Datalogger
Extech Instruments SDL300 Metal Vane Thermo-Anemometer Datalogger
Item# 90212
Price: Normally $499.99 
Hot Deal $438.70
Free shipping on orders over $175 - See Details


  • Records data on an SD card in Excel® format
  • Stores 99 readings manually
  • Large LCD displays Air Velocity and Temperature simultaneously

Essential Info

The Extech SDL300 Thermo-Anemometer Datalogger meter displays and stores air velocity and temperature readings. Temperature readings from the thermometer built into the vane probe or from an externally connected type K or J thermocouple temperature probe can be displayed and recorded. Data is stored on the included 2GB SD card for transfer to a PC. In addition, an RS232 port allows data streaming to a PC. This meter is shipped fully tested and calibrated, with proper use, will provide years of reliable service.

  • Metal Vane withstands temperatures to 158°F (70°C) and air velocity to 6900ft/min
  • Datalogger date/time stamps and stores readings on an SD card in Excel format for easy transfer to PC
  • Adjustable data sampling rate: 1 to 3600 seconds
  • Stores 99 readings manually and 20M readings via 2G SD card
  • Type K/J Thermocouple input for high temperature measurements
  • Large (9999 count) LCD displays Air Velocity and Temperature simultaneously
  • 2% velocity accuracy via low friction ball bearing vane wheel on 39" (1m) cable
  • Record/Recall MIN, MAX readings
  • Data Hold plus Auto power off with disable function
  • Built-in PC interface

  • Manuals/Software

    What's Included

    1x - Metal Vane Sensor
    6x - AA Batteries
    1x - 2GB SD Card
    1x - 3.9 Foot Cable
    1x - Hard Carrying Case


    ManufacturerExtech Instruments
    Manufacturer Product NoSDL300
    DisplayBacklit LCD (2 x1.5 Inches)
    Measurement UnitsAir velocity: m/S, Km/h, Ft/min, Knots, Mile/h (mph)
    Datalogger Sampling RateAUTO: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600
    Memory CardSD memory card;1G to 16GB (2GB Included)
    Data HoldFreeze the display reading
    Memory RecallRecord and Recall the Maximum and Minimum readings
    Display update rateApprox. 1 second
    Data OutputRS-232 / USB PC computer interface
    Operating Temperature0 to 50°C (32 to 122°F)
    Operating Humidity85% R.H. max.
    Auto Power OFFAfter 10 minutes of inactivity
    Power SupplySix 1.5VDC AA Batteries (included)
    Power ConsumptionApprox. 15 mA dc
    Weight.76lbs (347g)
    DimensionMain instrument: 7.1" x 2.9" x 1.9" (182 x 73 x 47.5mm)
    Anemometer sensor head: 2.8" (72mm) diameter
    Air Temperature
    Measuring Range0 to 70°C (32 to 158°F)
    Resolution0.1°C (0.1 °F)
    Accuracy± 0.8°C (1.5°F)

    Air Velocity
    m/S0.4 - 35.0 m/s0.1 m/S± (2% + 0.2 m/S)
    Km/h1.4 - 126.0 km/h0.1 Km/h± (2% + 0.8 Km/h)
    mph (Mile/h)0.9 - 78.3 mile/h0.1 mph± (2% + 0.4 mph)
    Knots0.8 - 68.0 knots0.1 Knots± (2% + 0.4 Knots)
    FPM (Ft/min)79 - 6890 ft/min1 FPM± (2% + 40 FPM)
    Important notes:
    Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
    Manufacturer contact information: Extech Instruments Corp, Tel: (781) 890-7440 Ext 200



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