PCE Instruments PCE-555 Handheld Hygrometer, for Indoor Climate Checks, Measures Humidity 0 … 100% RH & Temp -20 … 60°C / -4 … 140°F, with Dew Point, Wet Bulb & Compact Design

This Hygrometer has been developed to take fast measurements of humidity and temperature. The Hygrometer also offers a calculation of dew point and information about wet bulb globe temperature. This allows for the elimination of fungus in food storage as well as in food transportation. It is also very useful in the construction industry for determining condensation in walls. Technical Specifications Measurement ranges 0 to 100% r.h. -30 to 100°C Resolution 0.01% r.h. 0.01°C Accuracy ±2.0% r.h. at 25°C ±0.5°C at 25°C Display dual LCD with 4.5 positions Battery 9V battery (PP3) Dimensions 225 x 45 x 34mm Weight 200g With the PCE-555 Hygrometer you can measure ambient conditions including humidity in the top portion of the LCD whilst temperature is shown at the bottom. It also calculates wet bulb temperature and dew point, which are useful for calculating thermal stress. Dry bulb temperature is simply the environmental temperature. It's the temperature that is measured using any kind of thermometer. Wet bulb temperature is determined by using a mercury thermometer which is situated in the shade with the bulb covered with a piece of wet fabric under a current of air, measuring, for example, a vent or a rotating electric fan. In this way, the evaporation of water absorbs heat lowering the temperature, reflecting the decrease in the temperature reading. The lower relative humidity is, the quicker the water in the fabric will evaporate and the further the resulting decrease with respect to the dry bulb temperature (this is used to give an idea of thermal sensation). Dew point is the temperature at which air vapour turns into condensation, producing dew or mist, or if the temperature is low enough, frost. Delivery contents PCE-555 hygrometer, carrying case, battery and user's manual

• Offers a compact design, high precision and a fast response time
• Displays temperature and humidity measurement results simultaneously
• Features backlight, automatic power off, max hold and data hold functionality