HD31 is a hand held multifunction meter and data logger, with a large (43 x 58 mm) graphic color LCD display. It is equipped with three independent inputs. Each of the inputs allows connecting SICRAM probes (intelligent and interchangeable probes with calibration data stored inside), single parameter ones as well as combined ones, for the measurement of a variety of physical quantities: • Temperature • Relative humidity • Atmospheric and differential pressure • Air speed • Illuminance (lux) and Irradiance
The type of sensor connected to the various inputs is automatically recognized by the instrument. By connecting a combined temperature and relative humidity probe, the instruments calculates the quantities derived from humidity: dew point temperature, wet bulb temperature, absolute humidity, mixing ratio, partial vapor pressure, saturated vapor pressure, enthalpy. Moreover, the discomfort index DI and the NET (Net Effective Temperature) indices are calculated.
