The heat flux and evaporation on the Earth's surface are of great significance in the fields of meteorology and hydrology research. The sensible heat flux can cause temperature changes in the atmosphere, which can be detected by measuring the atmospheric temperature at different heights. Latent heat flux is the result of the interaction between water evaporation and plant transpiration. Therefore, sensible heat flux is commonly referred to as evapotranspiration（ET）It is the main component of surface energy.

As the originalThe upgraded product of LAS/XLAS, Kipp&Zonen's LAS Mk II, is a large aperture scintillation instrument that can perform long-term continuous observations of atmospheric sensible heat flux and turbulence (Cn2) at a distance of 100m~4500m, providing accurate data for energy balance research and evaporation monitoring. With the LAS Mk II, the measurement process can be made very simple and efficient, and its excellent environmental adaptability allows it to work stably in the field for a long time, simply by equipping it with batteries and solar panels.
The LAS Mk II is equipped with a digital automatic processing unit, which can automatically process measurement data and calculate parameters such as sensible heat flux and Cn2. The built-in data collector can store measurement data and calculation results for several months. The Evation software developed for this product can help users easily and intuitively view real-time data in a graphical manner, and provide data post-processing functions. In addition, the LAS Mk II comes standard with a LCD display and keyboard, which can display measured data in real-time and facilitate instrument settings without the need for additional equipment to be installed and calibrated on site.
The LAS Mk II is equipped with an RS-232/422 digital interface, which enables remote control of the instrument. The analog output interface can also enable the device to connect to the vast majority of data acquisition systems, making it easy to integrate into new or existing measurement networks.

particular Point:

lSimple configuration, convenient and easy to use

lHeated emission and reception windows, coupled with built-in temperature sensors for regulation, to eliminate the influence of cold environments

lThere are standard protection measures such as surge protection, overvoltage protection, and lightning protection at both the receiving and transmitting ends

lSupport real-time data display

lNear infrared light source for eye safety

l12V DC power supply, easy to use

lDigital and analog output interfaces

lCan be directly connected to a computer

Application Description:

The LASMk II large aperture scintillation instrument itself can measure atmospheric refractive index and Cn2. By installing meteorological sensor kits, net radiation sensors, soil heat flux sensors, etc., the LAS Mk II ET (Evapo Transportation) system can be formed, which can measure wind speed, temperature, and atmospheric pressure, calculate sensible heat flux and transpiration, and can be used for hydrological monitoring, satellite monitoring data ground verification, turbulence characteristics, and boundary layer energy balance research.