火电厂空预器密封间隙信号测量放大器的改进与实践

Improvement and Application of Air Preheater Sealed Interval Signal Measuring Amplifier for Power Plant

介绍了一种空预器密封间隙测量放大器新的改进设计方案和原理电路。电厂应用结果表明，改进后的放大器信号稳定，准确度高，线性测量及调整范围增大。

Improved design plan and principle circuit of a measuring amplifier for air preheater is introduced. The results of application show that the signal of amplifier is steady and accurate after improving, and range of linear measurement and regulation is enlarged.