Chilled-mirror dew-point hygrometer Dewmaster
Product Overview of Precision Dew-point Hygrometer
1: Measuring range: -45 ～ 100℃
★2: Relative humidity: 0 ～ 100%RH
★3: Dew point accuracy: (optional)+0.15℃（可选 +0.1℃）
★4: Resolution: 0.01℃
★5: Ambient temperature: -10 ～ +60℃
PDM483 Precision Dew-point Hygrometer is a temperature and humidity measuring equipment based on the principle of optical chilled mirror. Different from the principle of indirect measurement of humidity through changes in capacitance and resistance, it is a direct measurement instrument according to the definition of humidity/dew point.
In principle, humidity measuring instruments can be divided as chilled-mirror type, full-absorption electrolytic type, thin-film capacitance type, resistance type, dry and wet bulb type and mechanical type. Among them, the micro-water dew-point hygrometer of full-absorption electrolytic type is generally used for the measurement within low humidity range, while dew-point hygrometers of resistance type, dry and wet bulb type and mechanical type are usually used for the measurement of relative humidity. The dew-point hygrometers of chilled-mirror type and thin-film capacitance type can be used not only for the measurement of low humidity, but also for the measurement of medium and high humidity, i.e., the relative humidity. Each of the above types has its own advantages and disadvantages. The dew-point hygrometer of chilled-mirror type is widely used for standard transmission for its high accuracy, strong reliability and direct measurement characteristics.
The dew condensation mirror of this precision dew-point hygrometer is treated by special semiconductor process, and has certain corrosion resistance and high and low temperature resistance. The dew point and temperature are measured by precision platinum resistance thermometer, It can adapt to most application environment and ensure the measurement accuracy, and meets the requirements of some harsh environment conditions.
The visual interface is a 4-inch colorful capacitive touch screen, which is easy to operate and intuitive. The curves and the conversion of various parameters are suitable for various occasions with different demands.
In conclusion, PDM483 Precision Dew-point Hygrometer features high accuracy and good stability and repeatability, with long service life.