【摘要】 】γ射线式密度传感器由于其独特的优点而受到国内外用户的重视。文章首先分析了这种传感器的工作原理，在此基础上对其关键电路———前置放大器进行了重点讨论。最后说明了采用上述传感器测量泥浆密度的实际效果。更多还原

【Abstract】 The γ ray density sensor is notified for its unique virtue by users both at home and abroad.This paper first analyses in detail the sensor’s performing principle.Then,on the basis of this principle,the key circuit of the sensor and the pre-amplifier is discussed.In the end,the article presents the practical effect of adopting this sensor to measure the density of mud.更多还原