PCE Instruments Hygrometer PCE-555 measures humidity, temperature, dew point Developed for use in food storage, in food transportation and construction industry to determine temperature and humidity levels Fast response time, high accuracy, calculation of dew point and wet-bulb temperature Measurement range: 0 to 100% r.h./-30C to 100C Resolution: 0.01% r.h./0.01C Accuracy: +/-2.0% r.h. at 25C +/-0.5c at 25C