REED SD-4207 SD Series Vane Thermo-Anemometer, Datalogger, with Temperature


This SD series datalogging thermo-anemometer measures air velocity, air temperature and has a built-in contact thermometer. The SD-4207 features user selectable sampling rates from 1 to 3600 seconds. Using an SD card (max 16Gb) a user can select a desired sampling rate and quickly generate an Excel file without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.


  • Measures air velocity (fpm, m/s, kph, mph and knots) and air temperature
  • Contact temperature measurement with type J/K thermocouple option
  • Thermistor sensor for fast air temperature readings
  • Low friction ball-bearing, rotating vane probe ensures high accuracy readings
  • Real-time data logger with integral SD memory card
  • User selectable sampling rate from 1 to 3600 seconds
  • Large, easy-to-read backlit LCD display
  • Data hold and Min/Max functions
  • Optional PC software features live tracking via USB connection
  • Tripod mount on probe and instrument for long-term monitoring
  • Low battery indicator and auto shut off


Measuring Rangesfpm: 79 to 6890
m/s: 0.4 to 30
km/h: 1.4 to 126 
mph: 0.9 to 78.3 
knots: 0.8 to 68 knots
Air Temperature: 32 to 122°F (0 to 50°C)
Type K Temperature: -148.0 to 2372.0°F (-100.0 to 1300°C)
Type J Temperature: -148.0 to 2192.0°F (-100.0 to 1200°C)
AccuracyAir Velocity: ±(2% rdg + 40 fpm, 0.2 m/s,  0.8 km/h, 0.4 mph, 0.4 knot)
Air Temperature: ±0.8°C (1.5°F)
Temperature: ±(0.4% + 0.5°C (1°F))
Resolutionfpm: 1
m/s, km/h, mph, knot: 0.1
Temperature: 0.1°F/°C
Vane Diameter2.8" (72mm)
Response Time<1 sec.
Display5-digit, Dual LCD Display
Backlit DisplayYes
Data HoldYes
Datalogging CapabilitiesYes
Real-Time Clock and Date StampYes
Sampling RateYes (1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600s)
External MemoryYes, expandable up to 16Gb with SD card (optional)
Auto Shut-offYes (after 10 mins/off)
Kick StandYes
Tripod MountableYes
Low Battery IndicatorYes
Power Supply6 x AA batteries or AC Adapter (optional)
OutputYes (AC)
PC ConnectivityUSB Cable (optional)
Software  SW-U801-WIN Software (optional)
Software OS CompatibilityWindows XP / Vista / 7
Product CertificationsCE
Operating Temperature32 to 122°F (0 to 50°C)
Storage Temperature14 to 140°F (-10 to 60°C)
Operating Humidity Range10-80%
Dimensions8 x 3 x 1.5” (203 x 76 x 38mm)
Weight1.13lb (515g)