The R4000SD measures air velocity, air temperature and has a built-in contact thermometer. Featuring automatic temperature compensation, Data hold, Max/Min functions, and an easy-to-read backlit LCD display. Using a SD card (max 16GB), a user can manually record up to 99 readings or automatically by selecting a desired sampling rate from 1 to 3600 seconds. Quickly generate an Excel file with raw data, all without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring.

Features
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 integrated SD memory card
User selectable sampling rate from 1 to 3600 seconds
Easy-to-read backlit LCD display
Data hold and Min/Max functions
Tripod mount on probe and instrument for long-term monitoring
Low battery indicator and auto shut off