Hygro-Thermometer HM309

Efficient instrument for relative air humidity and Temperature, calculation of absolute humidity, dew point and pressure dew point, high precision, temperature compensated humidity measurement, up to 1% rH accuracy, double line display for humidity and temperature, temperature display in °C or °F, minimum and maximum value memory, Hold, measured value memory, automatic switch off, interchangeable probes for special applications, USB-interface.

Unit without measuring probe, please select the requested probe separately.

Technical data
Humidity resolution: 0.1% rH
Temperature resolution: 0.1 °C or 0.1 °F
Measurement cycle time: 2 measurements / second
Functions: Measured value memory, minimum and maximum value memory, RS 232 output, battery monitoring, automatic switch off
Special functions: Calculation of absolute humidity and dew point (pressure dew point)
Operating temperature of display unit: 0 ... 50 °C
Display: 2-line LCD, 37 mm x 42 mm
Dimensions (L x B x T): 181 x 71 x 38 mm (without plug)
Accessories: Battery, operating instructions
Special accessories: Measuring probes, pressure dew point probe, carry case, calibration set, PC-cable, Software, battery set, charger, power supply unit