Extech SDL350 Hot Wire Thermo-Anemometer SD Logger


Extech SDL350 Hot Wire Thermo-Anemometer SD Logger Hot Wire CFM Thermo-Anemometer/Datalogger.
  • Air Velocity/Air Flow meter with telescoping probe designed to fit into HVAC ducts and other small openings
  • Datalogger date/time stamps and stores readings on an SD card in Excel ® format for easy transfer to a PC
  • Probe extends up to 7.05ft (215cm) maximum length with cable
  • 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 or Air Flow and Temperature simultaneously
  • Record/Recall MIN, MAX readings
  • Data Hold plus Auto power off with disable function
  • Built-in PC interface

Spec Sheets


Technical Data Range Resolution Basic Accuracy
Air Velocity
m/s: 0.2 to 25m/s 0.01m/s ±5%rdg
ft/min: 40 to 3940ft/min 1ft/min ±5%rdg
MPH: 0.5 to 45MPH 0.1MPH ±5%rdg
knots: 1 to 31knots 0.01knots ±5%rdg
km/h: 0.7 to 72km/h 0.1km/h ±5%rdg
CFM (feet 3 /min): 0 to 1,907,000 CFM 0.001 to 100 CFM
CMM (meter 3 /min): 0 to 54,000 CMM 0.001 to 1 CMM
Temperature: 32 to 122°F (0 to 50°C) 0.1° ±1.5ºF (±0.8ºC)
Type K Temperature: -148 to 2372°F (-100 to 1300°C) 0.1° ±(0.4% + 1.8°F/1°C)
Type J Temperature: -148 to 2192°F (-100 to 1200°C) 0.1° ±(0.4% + 1.8°F/1°C)
Memory: 20 Million data records using 2G SD card
Dimensions: 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm)
Weight: 23.1oz (655g)


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  • Extech SDL350 Hot Wire Thermo-Anemometer SD Logger