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本文介绍了一种新型的测压仪表,叙述了仪表的工作原理、结构及主要特点,着重对共模干扰和串模干扰的抑制能力进行了理论分析.这种测压仪表采用传感元件和放大部分分离的设计方案,可以在控制室进行零点和量程的调整,便于管道化安装、遥控和维修管理.防爆等级为HⅢe,适用于易燃易爆中的最危险场所.具有抗震、抗摇摆、耐腐蚀,体积小、重最轻,精度高,省能等特点.为我国传感与放大分离的防爆测压仪表填补了空白.
This paper introduces a new type of manometer, describes the working principle, structure and main features of the instrument, focusing on the theoretical analysis of the common mode interference and suppression of the series mode interference.This kind of manometer uses the sensing element and Amplification of part of the design of the separation can be carried out in the control room zero and span adjustments for easy pipe installation, remote control and maintenance management. Explosion-proof grade HIIIe, for the most dangerous places in flammable and explosive. With seismic, anti-swing , Corrosion-resistant, small size, light weight, high precision, energy saving and other characteristics for our sense of separation and expansion of the explosion-proof manometry fill the gap.