A digital display device for mercury sphygmomanometer by a blood pressure measuring device and a digital display circuit, comprising a fixed plate blood pressure measuring device, a glass tube containing a fixed plate; a storage tank, the fixing plate of the left and right with the scale is arranged above the digital tube, a glass tube on the right side coated with a conductive coating, which has a storage tank is provided with a lead wire, mercury, insert a lead in mercury, mercury and conductive coating and wall thickness of glass tube composed of a capacitor, conductive coating area is fixed, and the mercury column area is not a fixed value, the area as the pressure increases, as the pressure decreased, the area change causes a change in capacitance, the measured capacitance can know the mercury position, the digital display circuit after processing the data, through the digital tube The blood pressure values can be displayed and the same blood pressure values can be read from the position of mercury at the same time.
【技术实现步骤摘要】
【技术保护点】
一种水银血压计数字显示装置是由一个血压测量装置（２２）和一个数字显示电路（２３）组成，其特征是：血压测量装置（２２）中含有一个固定板（２），固定板（２）上含有一根玻璃管（３），一个贮存罐（１９），和数码管（５），玻璃管（３）右侧镀有导电镀层（４），在导电镀层（４）上焊有一根镀层引出线（２５），贮存罐（１９）装有水银，在水银中插入一根水银引出线（２４）。
【技术特征摘要】
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