基于动态水量平衡的水面蒸发自动测定系统及其应用

提出了一种根据动态水量平衡来测定水面蒸发的新方法，介绍了该系统的实际应用情况。该方法与传统的测定方法相比，具有以下特点和优点：(1)实现了水面蒸发测定过程的自动化；(2)走出了通过测定水位变化来求得蒸发量的传统思路，建立了一种动态测定水面蒸发的新方法，在测定过程中保持蒸发器(池)内的水位不变；(3)该方法可以人为设定系统的采样间隔，从而较准确地测定水面蒸发的日变化过程，系统测量精度可达0．0015mm/h。

Automatic Measurement System of Water Surface Evaporation Based on Dynamic Water Balance and Its Application

Different from the traditional way of measuring evaporation of water surface,which is based on static water balance,a new way of measuring evaporation of water surface was brought forward,which was considered in technical innovation and was based on dynamic water balance.The practical application was introduced.The advantages of new way include:(1)actualized automatization of measuring evaporation of water surface;(2)founded dynamic measuring way,which was distinguished from traditional way by measuring water surface variation,and water surface was invariable during measuring;(3)sampling interval could be changed by person in the measuring way and the way accurately measured the diurnal variation of evaporation of water surface and its measurement precision was0.0015mm/h.