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一、前言石英晶体频率温度计(下称石英温度计)是一种用晶体作为感温元件的显示式温度计,它具有以下优点:分辨率和测温精度高;稳定性和线性较好;激励电平很低以及能作远距离测量。此外,还具有被人容易忽视的两个特点,即: 1.石英晶体的非线性结构可通过角方位的调整来改善它的频温特性;
I. INTRODUCTION Quartz crystal frequency thermometer (hereinafter referred to as quartz thermometer) is a kind of display type thermometer with crystal as temperature sensing element, which has the following advantages: high resolution and temperature measurement accuracy; good stability and linearity; excitation level Very low and able to make long range measurements. In addition, it also has two characteristics that are easily overlooked, namely: 1. The nonlinear structure of quartz crystal can be adjusted by the azimuth to improve its frequency-temperature characteristics;