The SEM406 evaporation transmitter is an instrument developed by our company to observe the evaporation of the water surface. The product adopts a double-layer stainless steel structure design, which can prevent the evaporation error caused by direct sunlight, and the measurement accuracy is more accurate, and the whole product adopts 304 Made of stainless steel, it has beautiful appearance and corrosion resistance, which can effectively ensure the service life of the sensor. Using digital sensors, it has the characteristics of high measurement accuracy, wide range, high sensitivity, no temperature drift, time drift, and long-term stable performance. The equipment adopts standard Modbus-RTU 485 signal output.
The SEM406 equipment adopts the principle of pressure measurement, measures the weight change of the liquid in the evaporating dish through the weighing principle, and then calculates the height of the liquid level, so as to obtain the evaporation amount, the measurement is more accurate, and the data is more scientific; it is not affected by the liquid freezing, overcomes the It solves the disadvantages of using the ultrasonic principle to measure the liquid level, such as inaccurate measurement when freezing, easy damage to the sensor when there is no water, and low measurement accuracy.
SEM406 is suitable for meteorological observation, plant cultivation, seed cultivation, agriculture and forestry, geological survey, scientific research and other fields. It can not only be used with automatic water adding device, data acquisition and sending device, etc. to realize automatic monitoring of evaporation process, but also can be used in combination with data acquisition and storage device (recorder) to realize automatic storage of evaporation data. It can be used in combination with sending devices to realize automatic observation and remote transmission of evaporation and rainfall processes. In addition, it can be used as a component of rainfall stations, evaporation stations, weather stations, environmental monitoring stations and other equipment to observe “water surface evaporation”, one of the meteorological or environmental parameters.
