Electronic balance with windshield

Abstract

[Problems] To obtain a stable measurement result in both a measuring-out mode and normal mode, and to obtain a weight value eliminating the influence of convection in the windshield. [Means for Solving Problems] An electronic balance with a windshield, the windshield surrounding a measuring panand having an openable/closable door, for averaging measurement data in a response time and obtaining a weight value based on it, the electronic balance including: a door open/close detection sensorfor detecting an open/close of the door; and a mode changer for switching the measurement mode between a measuring-out mode in which the response time is relatively short when the dooris open, and a normal mode in which the response time is relatively long when the dooris closed. In addition, in a convection time measurement mode, a convection time period since the door is closed with no sample on the measuring panuntil the fluctuation of the measurement data is settled down within a predetermined range is measured and memorized. After the memorized convection time has passed after a sample was put on the measuring panand the doorwas closed in a normal measurement mode, the measurement data is averaged in a predetermined response time and the weight value is calculated.