井冈山大学学报（自然科学版）
井岡山大學學報（自然科學版）
정강산대학학보（자연과학판）
JOURNAL OF JINGGANGSHAN UNIVERSITY(SCIENCE AND TECHNOLOGY)
2015年
3期
13-16
,共4页
干井炉%校准温度%插入深度%轴向温度%温度梯度
榦井爐%校準溫度%插入深度%軸嚮溫度%溫度梯度
간정로%교준온도%삽입심도%축향온도%온도제도
dry-well thermometer calibrator%calibration temperature%insertion depth%axial temperature%temperature gradient
针对干井炉易受被校温度探头长度尺寸的影响，无法满足其始终在井底部被测量的条件问题，实验选用FLUKE 干井炉，在不同校准温度下，改变标准铂电阻插入干井炉的深度。研究发现，在同一校准温度下，轴向由井底到井口方向的温度梯度值会不断增加，靠近井口处的温度准确性差，尽量避免在该位置校准温度探头。此外，随着校准温度的升高，校准温度与环境差别增大，干井炉温度偏差通常会增加，其轴向最大温差也会升高。当校准温度比较高时，轴向温度的不均匀性对其测温准确性的影响比较大，不可忽略。
針對榦井爐易受被校溫度探頭長度呎吋的影響，無法滿足其始終在井底部被測量的條件問題，實驗選用FLUKE 榦井爐，在不同校準溫度下，改變標準鉑電阻插入榦井爐的深度。研究髮現，在同一校準溫度下，軸嚮由井底到井口方嚮的溫度梯度值會不斷增加，靠近井口處的溫度準確性差，儘量避免在該位置校準溫度探頭。此外，隨著校準溫度的升高，校準溫度與環境差彆增大，榦井爐溫度偏差通常會增加，其軸嚮最大溫差也會升高。噹校準溫度比較高時，軸嚮溫度的不均勻性對其測溫準確性的影響比較大，不可忽略。
침대간정로역수피교온도탐두장도척촌적영향，무법만족기시종재정저부피측량적조건문제，실험선용FLUKE 간정로，재불동교준온도하，개변표준박전조삽입간정로적심도。연구발현，재동일교준온도하，축향유정저도정구방향적온도제도치회불단증가，고근정구처적온도준학성차，진량피면재해위치교준온도탐두。차외，수착교준온도적승고，교준온도여배경차별증대，간정로온도편차통상회증가，기축향최대온차야회승고。당교준온도비교고시，축향온도적불균균성대기측온준학성적영향비교대，불가홀략。
Dry-well thermometer calibrators are widely used in enterprises for on-site or online temperature calibrations. By the influence of the length of the temperature probes, which could not always be located at the bottom of the well, the axial temperature distribution of dry-well thermometer calibrators is one of the important factors to affect the measurement accuracy. Using the dry-well thermometer calibrator from FLUKE, the temperature distributions in working conditions with various temperature levels were measured by changing the depth of the standard platinum resistance inserted into the well. By analyzing the relationship between the calibration temperatures and the axial temperature distribution, some problems could be found out, which could provide more comprehensive and reliable experimental data for its application in the field of temperature calibration to improve the measurement accuracy.
