These meters simultaneously measure and datalog several ventilation parameters using a single probe with multiple sensors. Great for cleanroom filtration airflow measurements — they automatically calculate volumetric flow rate for round, square, and rectangular areas. All models measure velocity, temperature and calculate flow.

Model 10271-37 include addition functionality for measuring humidity and calculating dew point and wet bulb. Probe included with model 10271-37 that articulates up to 90°. Auto shut-off preserves battery life, and a low battery indicator alerts user of battery condition.