一、前言本文介绍一种测温精度较高而使用方便的低温石英频率温度计。我们研制的这种温度计经实测表明,其技术指标为:(1)测温范围;-80～0℃;(2)测量不确定度:15mK;(3)测温分辨率:2mk～0.2mK(对应闸门时间1s～10s);(4)示值稳定性:12mK/年;(5)温度计零漂:5mK/年。它可以在以下方面得到应用:首先在-80～0℃温度范围内可作量值传 I. Preface This article describes a temperature measurement accuracy and easy to use low-temperature quartz frequency thermometer. The thermometer we developed shows that the technical indicators are: (1) temperature range; -80 ~ 0 ℃; (2) measurement uncertainty: 15mK; (3) temperature resolution: 2mk ~ 0.2mK (Corresponding gate time 1s ~ 10s); (4) indication stability: 12mK / year; (5) thermometer zero drift: 5mK / year. It can be used in the following areas: First, in the -80 ~ 0 ℃ temperature range can be used for mass transfer