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恒温槽是石英晶体振荡器的重要部件之一.振荡器的频率稳定度愈高,则恒温槽内温度的变化就应愈小.这种极小的温度变化通常用测温晶体来测量.其读数精度可达1×10~(-3)℃.但测量结果的可靠性因下述因素而显著降低:由于恒温槽内腔是一个非均匀温度场,而测温晶片和槽腔尺寸相近,故测温晶体所作的测量是定域的.它所测得的温度读数实际上是晶片所在区域各点温度和温度梯度对晶片影响的总效果;加
Thermostat is one of the most important parts of quartz crystal oscillator.The higher the frequency stability of the oscillator, the smaller the change of temperature in the thermostat should be.This kind of minimal temperature change is usually measured by temperature crystal The reading accuracy is up to 1 × 10 -3 ° C. However, the reliability of the measurement results is significantly reduced by the following factors: Because the cavity in the bath is a non-uniform temperature field and the size of the specimen in the bath is similar to that of the bath, Therefore, the temperature measurement of the crystal is localized. It measured the temperature reading is actually the temperature of the chip area and the temperature gradient of the total effect of the impact on the chip; plus