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管路中流体流量的测量同在工业生产过程中对温度、压力、液位等参数的测量一样,是很重要的。在这种测量仪表中,差压变送器使用得最广泛。目前使用的品种也较多,从简单的液柱式、机械式及现场指示仪到气动或电动的位移平衡式以及力平衡式的变送器,都在使用。而且在电动位移式变送器中又有电感式、应变片式、电容式等等。为了研究今后差压变送器的发展趋向,回顾一下其发展历史是必要的
The measurement of the fluid flow in the pipeline is as important as measuring the parameters of temperature, pressure and liquid level in the industrial process. Differential pressure transmitters are the most widely used in this type of meter. Currently used in more varieties, ranging from simple liquid column, mechanical and field indicator to the pneumatic or electric displacement balance and force balance of the transmitter, are in use. But also in the electric displacement transmitter inductive, strain gauge, capacitance and so on. In order to study the development trend of differential pressure transmitter in the future, it is necessary to review its development history