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一、引言随着现代化工业水平的逐步提高,企业对工业过程测量的准确度要求也越来越高,压力变送器作为现场压力测量的主要仪器设备被广泛应用。压力变送器与数据采集器、信号处理系统和终端显示等单元一起构成现场压力测量系统(见图1)。压力变送器的输出信号(信号可以是电压(V)、电流(mA)、频率(Hz)等模拟信号或数字信号)经数据采集器和信号处理等环节,在显示终端显示压力测量结果。
I. INTRODUCTION With the gradual improvement of modern industrial level, the accuracy of industrial process measurement is getting higher and higher. Pressure transmitters are widely used as the main instrument for on-site pressure measurement. Pressure transmitters and data acquisition, signal processing systems and terminal display units together form a field pressure measurement system (see Figure 1). Pressure transmitter output signal (the signal can be voltage (V), current (mA), frequency (Hz) and other analog signals or digital signals) through the data acquisition and signal processing and other links, the display terminal shows the pressure measurement results.