一、引言 DL—2型热阻极电离计管是五十年代仿苏的JIM—2产品,它与相应的供电和测量电路构成用于测量1×10-3～1×10-7托压强范围的真空计,是我国目前使用最普遍的真空计之一。、关于该电离计灵敏度的计算方法,作者早在1963年作过讨论[1],虽然对JIM-2得到的灵敏度计算值与Д,П I. INTRODUCTION DL-2 thermal resistance pole ionization tube is the imitation of the Soviet Union in the fifties JIM-2 products, which with the corresponding power supply and measurement circuit for measuring 1 × 10-3 ~ 1 × 10-7 Torr Range of vacuum gauge, is currently one of the most commonly used vacuum gauge in our country. , The sensitivity of the ionization gauge calculation method, the author discussed in 1963 [1], although the calculated sensitivity of JIM-2 and Д, П