Caltech Engineering Services offers ET-931 Digital Psychrometer / dew point meter. ETI-931 Dewpoint Meter is an easy way to use and check air temperature, relative humidity, wet bulb temperature and dew point.
The Digital Psychrometer / Dew Point Meter has option of humidity which measures %rh over the range of 0 to 100 %rh with a resolution of 0.01 %rh and temperature over the range of -30 to 100 °C with a resolution of 0.1°C. This instrument also measures dew point just by pressing mode button of the instrument. This humidity meter incorporates a clear custom LCD with °C, %rh, dew point, and max/min indication. It has excellent features for fast, accurate measurements for analysis of critical environmental conditions:
ET-931 Digital Dew point meter is powered by 9V battery. An auto power off facility turns the dew point meter, maximizing battery life.
Time %RH : 10S (90% at 25°C still air)
High Accuracy, Temperature, Humidity, Dew point Temperature, Wet Bulb Temperature
Max Hold and Data Hold Function
Power source: battery powered
Power saving: auto-off, Disable Sleep Mode
Dual Display: Temperature and Humidity
Display type: LCD digital 3.5 Digit
Warranty: one year