针对采用两种不同电路的开关式γ料位计进行了理论比较，结果表明在同等条件下采用积分电路比之简单计数电路γ继电器动作时间快，对给定的可靠度和动作时间所用放射源的活度小。对开关式γ料位计的设计和应用具有现实意义。 The theoretical comparison of the switch type γ level gauge with two different circuits shows that the integral circuit is faster than the simple counting circuit γ relay in the same condition and the radio frequency source for the given reliability and operation time Little activity. The design and application of the switching γ gauge has practical significance.