First, product overview;
Cold mirror dew point meter is a humidity measuring device based on the principle of dew point definition, and it is an instrument for measuring dew point directly.It is recognized as the standard of measuring and judging other humidity and dew point measurement instruments.Photoelectric Dew Point instrument has high precision, long term stability and service life.Long, reproducible and other characteristics.The mirror surface of the dew point meter is treated with gold plating, and the photoelectric measuring room is made of corrosion-resistant material with excellent performance at high and low temperature, which ensures the accurate and harsh application environment of the measurement data.
Second, the scope of application;
As a standard instrument for measuring humidity and dew point, photoelectric dew point meter is widely used, such as calibration equipment of humidity meter sensor, gas moisture measurement of natural gas pipeline, moisture content of toxic and corrosive gas.
Third, the principle of optoelectronic dew point meter;
Dew point: when the moisture in the mixture decreases to a certain degree, the moisture content in the gas reaches the ambient temperature saturated water vapor, the excess water molecule will condense dew water or frost, the temperature at this time is called dew point temperature or frost point temperature.Relative humidity: at a given temperature, the ratio of the current water vapor content to the saturated water vapor content at that temperature is X 100;The optoelectronic dew-point instrument is used to control the temperature of metal mirror by using a refrigeration semiconductor. When the mirror is formed into a layer of dew water or frost, the thickness of the condensation is measured by photoelectric elements, and the temperature when the condensation of the mirror reaches equilibrium is measured. The equilibrium temperature is the temperature of dew point.Measurement of ambient temperature at standard atmospheric pressureThe relative humidity, absolute humidity, water activity and air enthalpy can be obtained by calculation.