Extech Instruments SDL350 Hot Wire CFM Thermo-Anemometer Datalogger
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Extech Instruments SDL350 Hot Wire CFM Thermo-Anemometer Datalogger

Measures Air Velocity and Temperature in your HVAC Ducts
  • Air Velocity/Air Flow meter with telescoping probe
  • Stores 99 readings manually and more on SD Card
  • LCD displays Air Velocity and Temperature simultaneously


  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • The Extech SDL350 Hot Wire 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. This meter is shipped fully tested and calibrated, with proper use, will provide years of reliable service.

    • Air Velocity/Air Flow meter with telescoping probe designed to fit into HVAC ducts and small openings
    • 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
    • Probe extends up to 7.05ft (215cm) maximum length with cable
    • Record/Recall MIN, MAX readings
    • Data Hold plus Auto power off with disable function
    • Built-in PC interface

  • Specifications
    Manufacturer Extech Instruments
    Manufacturer Product No SDL350
    UPC 793950433515
    Display Backlit LCD (2 x1.5 Inches)
    Sensor Types Hot-wire thermistor for air velocity and air flow
    Thermistor for temperature sensor
    Thermocouple for remote temperature
    Air Velocity Measurement m/S, Km/h, Ft/min, Knots, Mile/h (mph)
    Air Temp Measurement °C / °F
    Air Flow (volume) CFM or CMM
    Datalogger Sampling Rate AUTO: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600
    Memory Card SD memory card;1G to 16GB (2GB Included)
    Data Hold Freeze the display reading
    Memory Recall Record and Recall the Maximum and Minimum readings
    Display update rate Approx. 1 second
    Data Output RS-232 / USB PC computer interface
    Operating Temperature 0 to 50°C (32 to 122°F)
    Operating Humidity 85% R.H. max.
    Auto Power OFF After 10 minutes of inactivity
    Power Supply Six 1.5VDC AA Batteries (included)
    Power Consumption Approx. 15 mA dc
    Weight .76lbs (347g)
    Main Instrument 7.1" x 2.9" x 1.9" (182 x 73 x 47.5mm)
    Telescoping Probe .05" Diameter x 11" Length x 36" Max Length
    Cable Length 7 Feet (2.1M)
    Air Temperature
    Measuring Range 0 to 50°C (32 to 122°F)
    Resolution 0.1°C (0.1 °F)
    Accuracy +/- 0.8°C (1.5°F)
    Air Flow
    CMM Measuring Range 0 to 54,000 CMM
    CMM Resolution 0.001 to 1 CMM
    CFM Measuring Range 0 to 1,907,000 CFM
    CFM Resolution 0.001 to 100 CFM

    Air Velocity
    Measurement Range Resolution
    m/S 0.2 - 5.0 m/s
    5.1 - 25.0 m/s
    Km/h 0.7 - 18.00 km/h
    18.0 - 72.0 km/h
    mph (Mile/h) 0.5 - 11.20 mph
    11.2 - 44.7 mph
    Knots 0.40 - 9.70 knots
    9.7 - 38.8 knots
    FPM (Ft/min) 40 - 3940 ft/min 1 FPM
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  • 1x - Metal Vane Sensor
    6x - AA Batteries
    1x - 3.1 Foot Telescoping Probe
    1x - 2GB SD Card
    1x - 3.9 Foot Cable
    1x - Hard Carrying Case

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