本文叙述了具有简易能谱分析功能的FH-454型自动定标器,它是我厂新研制出的产品。这种定标器是一种台式室内计数仪器,还备有可变增益放大器、单道脉冲幅度分析器和正(或负)高压稳压电源。它可配合G·M计数管或α、β、γ等闪烁探头,进行放射性强度测量和简易能谱分析。在电路上采用集成电路,结构上采用积木式型材,从而使整机耗电量小、重量轻、体积小,而且式样美观。 This article describes the FH-454 automatic scaler with simple energy spectrum analysis function, which is a new product developed by our factory. The scaler is a bench-top indoor instrumentation with a variable-gain amplifier, a single-pulse amplitude analyzer and a positive (or negative) high-voltage regulated power supply. It can be used with G · M counter tubes or α, β, γ and other scintillation probes for radioactivity measurement and simple energy spectrum analysis. In the circuit using integrated circuits, the use of building block structure, so that the whole power consumption is small, light weight, small size, and beautiful appearance.