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溫度校準用恒溫槽技術(shù)性能測試規(guī)范 試驗報告 溫度校準用恒溫槽技術(shù)性能測試規(guī)范修訂小組 2019年8月 試驗目錄 一、 恒溫槽溫場穩(wěn)定性試驗 二、 鉑熱電阻穩(wěn)定性試驗 三、 標準鉑電阻溫度計不同浸沒深度下的漏熱影響試驗 四、 不同溫度計熱響應時間（升降溫速率）試驗 五、 恒溫槽技術(shù)性能測試 一 恒溫槽溫場穩(wěn)定性試驗 1 試驗目的 了解恒溫槽在穩(wěn)定狀態(tài)下，內(nèi)部各位置之間的溫差（溫場性能）隨時間變化狀況，以確定科學、合理的溫場測試方法。 2 試驗設備 四線制A級鎧裝鉑電阻溫度計9支； 電測設備（溫度巡檢儀,型號：暫缺 ，編號：暫缺），分辨力0.001℃； 恒溫槽三臺，編號和溫度范圍見表1。 表1 恒溫槽溫場性能 恒溫槽型號 恒溫槽編號 溫度 暫缺 暫缺 -80℃ 暫缺 暫缺 100℃ 暫缺 暫缺 300℃ 3 試驗方法 3.1將4支溫度計（編號1-4）的底端放置在距液面15cm的水平面上，1支溫度計（編號5）的底端置于距液面30cm的水平面中心位置，4支溫度計（編號6-9）的底端放置在距液面45cm處的水平面上。待溫度穩(wěn)定后，測試各溫度計數(shù)值，每30秒間隔測試一遍。持續(xù)測試4次。 觀察各位置點的溫度變化幅度。 3.2 將4支溫度計（編號1-4）的底端放置在距液面15cm的水平面上，1支溫度計（編號5）的底端置于距液面30cm的水平面中心位置，4支溫度計（編號6-9）的底端放置在距液面30cm處的水平面上，待溫度穩(wěn)定后，測試各溫度計數(shù)值，每30秒間隔測試一遍。持續(xù)測試4次。首先計算各位置點的溫度變化，最后計算所有溫度變化的最大幅度。 4 試驗人員 李穎、 ，大連市計量檢測研究院有限公司，2019年3月-4月 5 測試記錄 5.1測試溫度-80℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 11:03:27 -79.995 -80.030 -80.081 -80.028 -80.047 -80.009 -80.010 -80.002 -80.003 2 11:04:27 -79.997 -80.029 -80.079 -80.028 -80.045 -80.008 -80.008 -80.003 -80.000 3 11:05:27 -79.996 -80.027 -80.078 -80.029 -80.046 -80.010 -80.010 -80.002 -80.001 4 11:06:27 -79.998 -80.030 -80.077 -80.027 -80.046 -80.008 -80.008 -80.003 -80.001 5 11:07:27 -79.999 -80.031 -80.078 -80.027 -80.048 -80.008 -80.009 -80.003 -80.001 6 11:08:27 -79.998 -80.030 -80.079 -80.028 -80.046 -80.009 -80.011 -80.002 -80.002 7 11:09:27 -79.996 -80.031 -80.079 -80.029 -80.045 -80.008 -80.009 -80.003 -80.000 8 11:10:27 -79.997 -80.031 -80.080 -80.030 -80.048 -80.011 -80.010 -80.001 -80.002 9 11:11:27 -79.995 -80.031 -80.081 -80.031 -80.045 -80.010 -80.008 -80.003 -80.000 10 11:12:27 -79.999 -80.030 -80.078 -80.027 -80.046 -80.010 -80.010 -80.002 -80.002 11 11:13:27 -79.997 -80.030 -80.077 -80.028 -80.045 -80.010 -80.010 -80.002 -80.001 12 11:14:27 -79.995 -80.031 -80.079 -80.029 -80.046 -80.011 -80.011 -80.001 -80.002 13 11:15:27 -79.995 -80.032 -80.078 -80.028 -80.048 -80.011 -80.011 -80.000 -80.003 14 11:16:27 -79.998 -80.030 -80.078 -80.027 -80.045 -80.009 -80.009 -80.002 -80.000 15 11:17:27 -79.996 -80.029 -80.081 -80.028 -80.046 -80.008 -80.009 -80.002 -80.001 16 11:18:27 -79.995 -80.028 -80.079 -80.029 -80.047 -80.011 -80.011 -80.000 -80.002 17 11:19:27 -79.995 -80.031 -80.079 -80.030 -80.046 -80.009 -80.009 -80.002 -80.001 18 11:20:27 -79.995 -80.027 -80.081 -80.029 -80.046 -80.008 -80.008 -80.002 -80.000 19 11:21:27 -79.996 -80.031 -80.078 -80.031 -80.047 -80.011 -80.011 -80.000 -80.003 20 11:22:27 -79.994 -80.032 -80.080 -80.029 -80.046 -80.009 -80.009 -80.002 -80.001 21 11:23:27 -79.995 -80.031 -80.080 -80.029 -80.046 -80.010 -80.011 -80.001 -80.000 22 11:24:27 -79.994 -80.032 -80.078 -80.031 -80.045 -80.008 -80.008 -80.003 -80.002 23 11:25:27 -79.996 -80.030 -80.077 -80.027 -80.047 -80.010 -80.010 -80.002 -80.002 24 11:26:27 -79.998 -80.030 -80.078 -80.028 -80.045 -80.008 -80.008 -80.002 -80.001 25 11:27:27 -79.999 -80.031 -80.081 -80.031 -80.048 -80.010 -80.011 -80.001 -80.002 26 11:28:27 -79.996 -80.029 -80.079 -80.029 -80.046 -80.008 -80.009 -80.002 -80.001 27 11:29:27 -79.997 -80.031 -80.080 -80.028 -80.045 -80.008 -80.008 -80.003 -80.001 28 11:30:27 -79.994 -80.032 -80.079 -80.029 -80.046 -80.011 -80.009 -80.002 -80.001 29 11:31:27 -79.995 -80.032 -80.078 -80.030 -80.046 -80.010 -80.010 -80.001 -80.003 30 11:32:27 -79.998 -80.032 -80.079 -80.029 -80.046 -80.009 -80.010 -80.002 -80.000 最大變化 0.005 0.005 0.004 0.004 0.003 0.003 0.003 0.003 0.003 0.002 試驗結(jié)論：在-80℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度的變化之差不大于0.001℃，遠小于恒溫槽水平溫差0.01℃、 垂直溫差0.02℃的技術(shù)要求。 5.2測試溫度-80℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 11:45:04 -79.999 -80.031 -80.079 -80.029 -80.047 -80.011 -80.011 -80.000 -80.003 2 11:46:04 -79.997 -80.031 -80.077 -80.027 -80.046 -80.012 -80.012 -80.001 -80.002 3 11:47:04 -79.995 -80.033 -80.078 -80.026 -80.048 -80.010 -80.011 -80.001 -80.002 4 11:48:04 -79.996 -80.032 -80.079 -80.028 -80.046 -80.009 -80.009 -80.002 -80.001 5 11:49:04 -79.998 -80.031 -80.078 -80.028 -80.045 -80.008 -80.009 -80.003 -80.000 6 11:50:04 -79.996 -80.030 -80.077 -80.026 -80.044 -80.008 -80.009 -80.003 -80.001 7 11:51:04 -79.994 -80.030 -80.079 -80.028 -80.045 -80.007 -80.009 -80.003 -80.001 8 11:52:04 -79.996 -80.030 -80.078 -80.028 -80.047 -80.008 -80.008 -80.003 -80.000 9 11:53:04 -79.997 -80.032 -80.076 -80.027 -80.046 -80.010 -80.010 -80.002 -80.002 10 11:54:04 -79.998 -80.034 -80.079 -80.030 -80.048 -80.009 -80.010 -80.002 -80.001 11 11:55:04 -79.994 -80.032 -80.080 -80.029 -80.046 -80.009 -80.010 -80.002 -80.001 12 11:56:04 -79.996 -80.031 -80.079 -80.028 -80.044 -80.008 -80.009 -80.002 -80.001 13 11:57:04 -79.997 -80.031 -80.077 -80.027 -80.046 -80.011 -80.010 -80.002 -80.002 14 11:58:04 -79.995 -80.033 -80.080 -80.026 -80.047 -80.009 -80.009 -80.002 -80.001 15 11:59:04 -79.994 -80.031 -80.078 -80.029 -80.046 -80.008 -80.008 -80.002 -80.000 16 12:00:04 -79.998 -80.032 -80.079 -80.030 -80.047 -80.007 -80.010 -80.002 -80.002 17 12:01:04 -79.996 -80.031 -80.077 -80.029 -80.045 -80.008 -80.008 -80.003 -80.000 18 12:02:04 -79.998 -80.032 -80.080 -80.030 -80.047 -80.010 -80.010 -80.001 -80.003 19 12:03:04 -79.995 -80.034 -80.079 -80.029 -80.046 -80.009 -80.009 -80.002 -80.001 20 12:04:04 -79.997 -80.033 -80.080 -80.029 -80.048 -80.011 -80.011 -80.000 -80.002 21 12:05:04 -79.996 -80.031 -80.078 -80.029 -80.046 -80.009 -80.009 -80.002 -80.001 22 12:06:04 -79.995 -80.034 -80.080 -80.030 -80.047 -80.010 -80.010 -80.000 -80.002 23 12:07:04 -79.997 -80.032 -80.079 -80.028 -80.046 -80.010 -80.010 -80.002 -80.001 24 12:08:04 -79.998 -80.030 -80.077 -80.029 -80.046 -80.008 -80.009 -80.003 -80.000 25 12:09:04 -79.998 -80.031 -80.079 -80.029 -80.044 -80.009 -80.009 -80.002 -80.002 26 12:10:04 -79.996 -80.030 -80.080 -80.029 -80.046 -80.012 -80.011 -80.001 -80.001 27 12:11:04 -79.999 -80.033 -80.078 -80.031 -80.048 -80.011 -80.010 -80.000 -80.003 28 12:12:04 -79.997 -80.032 -80.077 -80.028 -80.047 -80.010 -80.012 -80.001 -80.001 29 12:13:04 -79.995 -80.031 -80.076 -80.029 -80.045 -80.008 -80.010 -80.002 -0.001 30 12:14:04 -79.995 -80.030 -80.078 -80.027 -80.046 -80.009 -80.010 -80.002 -80.002 最大變化 0.005 0.004 0.004 0.005 0.004 0.005 0.004 0.003 0.003 0.002 試驗結(jié)論：在-80℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度變化之差不大于0.001℃，遠小于恒溫槽水平溫差0.01℃、 垂直溫差0.02℃的技術(shù)要求。 5.3測試溫度100℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 12:38:10 100.662 100.638 100.595 100.645 100.634 100.675 100.657 100.657 100.665 2 12:39:10 100.662 100.637 100.595 100.645 100.635 100.676 100.658 100.657 100.665 3 12:40:10 100.661 100.637 100.593 100.643 100.635 100.674 100.657 100.657 100.664 4 12:41:10 100.660 100.637 100.594 100.645 100.634 100.673 100.655 100.656 100.663 5 12:42:10 100.661 100.638 100.595 100.646 100.635 100.675 100.656 100.657 100.665 6 12:43:10 100.661 100.638 100.593 100.645 100.634 100.674 100.658 100.656 100.664 7 12:44:10 100.660 100.638 100.593 100.645 100.635 100.674 100.657 100.657 100.663 8 12:45:10 100.661 100.637 100.594 100.644 100.634 100.675 100.658 100.656 100.665 9 12:46:10 100.662 100.639 100.594 100.643 100.635 100.673 100.657 100.657 100.664 10 12:47:10 100.660 100.638 100.593 100.644 100.634 100.674 100.657 100.655 100.663 11 12:48:10 100.660 100.638 100.594 100.644 100.635 100.675 100.656 100.657 100.663 12 12:49:10 100.661 100.638 100.593 100.644 100.633 100.673 100.657 100.656 100.663 13 12:50:10 100.662 100.639 100.595 100.645 100.634 100.674 100.657 100.657 100.664 14 12:51:10 100.660 100.637 100.594 100.644 100.632 100.675 100.656 100.656 100.664 15 12:52:10 100.662 100.638 100.595 100.645 100.635 100.676 100.656 100.658 100.665 16 12:53:10 100.660 100.638 100.594 100.644 100.633 100.675 100.655 100.655 100.663 17 12:54:10 100.660 100.637 100.595 100.643 100.634 100.676 100.656 100.656 100.664 18 12:55:10 100.661 100.639 100.595 100.645 100.635 100.676 100.658 100.658 100.666 19 12:56:10 100.660 100.638 100.594 100.644 100.634 100.676 100.658 100.657 100.665 20 12:57:10 100.660 100.638 100.594 100.643 100.634 100.675 100.657 100.656 100.664 21 12:58:10 100.661 100.639 100.595 100.644 100.635 100.676 100.656 100.657 100.666 22 12:59:10 100.662 100.639 100.595 100.646 100.635 100.673 100.657 100.656 100.664 23 13:00:10 100.662 100.640 100.595 100.645 100.635 100.674 100.656 100.656 100.664 24 13:01:10 100.660 100.638 100.595 100.645 100.633 100.674 100.656 100.657 100.663 25 13:02:10 100.661 100.638 100.595 100.646 100.633 100.674 100.656 100.656 100.663 26 13:03:10 100.660 100.638 100.595 100.644 100.633 100.675 100.656 100.657 100.663 27 13:04:10 100.661 100.638 100.595 100.645 100.634 100.676 100.657 100.658 100.665 28 13:05:10 100.662 100.639 100.595 100.645 100.634 100.674 100.657 100.657 100.664 29 13:06:10 100.661 100.639 100.595 100.645 100.635 100.674 100.657 100.658 100.664 30 13:07:10 100.662 100.639 100.595 100.646 100.635 100.676 100.657 100.656 100.666 最大變化 0.002 0.002 0.002 0.003 0.003 0.003 0.004 0.004 0.003 0.002 試驗結(jié)論：在100℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度變化之差不大于0.002℃，遠小于恒溫槽水平溫差0.01℃、垂直溫差0.02℃的技術(shù)要求。 5.4 測試溫度100℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 13:40:00 100.667 100.644 100.600 100.650 100.640 100.681 100.661 100.662 100.669 2 13:41:00 100.667 100.644 100.601 100.651 100.640 100.680 100.661 100.662 100.669 3 13:42:00 100.666 100.644 100.600 100.651 100.640 100.680 100.661 100.662 100.670 4 13:43:00 100.665 100.644 100.600 100.651 100.640 100.681 100.662 100.663 100.671 5 13:44:00 100.667 100.646 100.601 100.652 100.641 100.682 100.663 100.663 100.671 6 13:45:00 100.667 100.644 100.601 100.650 100.640 100.680 100.662 100.662 100.670 7 13:46:00 100.668 100.645 100.602 100.652 100.640 100.680 100.662 100.664 100.671 8 13:47:00 100.665 100.643 100.600 100.649 100.639 100.680 100.661 100.663 100.671 9 13:48:00 100.666 100.644 100.600 100.650 100.640 100.682 100.660 100.663 100.671 10 13:49:00 100.666 100.646 100.603 100.650 100.641 100.682 100.662 100.664 100.671 11 13:50:00 100.667 100.644 100.601 100.651 100.641 100.680 100.662 100.663 100.670 12 13:51:00 100.666 100.643 100.600 100.650 100.639 100.679 100.661 100.662 100.668 13 13:52:00 100.665 100.643 100.600 100.649 100.639 100.680 100.660 100.662 100.670 14 13:53:00 100.665 100.643 100.600 100.650 100.640 100.681 100.661 100.661 100.670 15 13:54:00 100.668 100.645 100.602 100.650 100.641 100.681 100.662 100.663 100.670 16 13:55:00 100.667 100.644 100.601 100.651 100.639 100.680 100.662 100.662 100.670 17 13:56:00 100.666 100.644 100.600 100.651 100.639 100.680 100.661 100.662 100.670 18 13:57:00 100.666 100.644 100.600 100.651 100.640 100.682 100.662 100.663 100.671 19 13:58:00 100.666 100.644 100.600 100.650 100.640 100.682 100.661 100.663 100.670 20 13:59:00 100.667 100.644 100.602 100.652 100.642 100.681 100.662 100.664 100.671 21 14:00:00 100.667 100.646 100.601 100.649 100.640 100.681 100.662 100.663 100.670 22 14:01:00 100.666 100.644 100.601 100.651 100.639 100.680 100.661 100.663 100.670 23 14:02:00 100.666 100.644 100.599 100.650 100.638 100.679 100.662 100.662 100.668 24 14:03:00 100.666 100.644 100.600 100.651 100.639 100.681 100.661 100.663 100.671 25 14:04:00 100.666 100.643 100.600 100.649 100.640 100.681 100.661 100.661 100.672 26 14:05:00 100.665 100.643 100.599 100.649 100.639 100.681 100.661 100.662 100.671 27 14:06:00 100.665 100.643 100.600 100.649 100.639 100.681 100.661 100.661 100.670 28 14:07:00 100.665 100.644 100.599 100.649 100.640 100.682 100.660 100.661 100.670 29 14:08:00 100.666 100.644 100.601 100.650 100.640 100.681 100.661 100.661 100.669 30 14:09:00 100.667 100.645 100.602 100.652 100.639 100.680 100.662 100.664 100.669 最大變化 0.003 0.004 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.001 試驗結(jié)論：在100℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度變化之差不大于0.001℃，遠小于恒溫槽水平溫差0.01℃、垂直溫差0.02℃的技術(shù)要求。 5.5 測試溫度202℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 8:38:17 202.673 202.654 202.608 202.658 202.655 202.690 202.672 202.672 202.677 2 8:39:17 202.672 202.656 202.610 202.659 202.655 202.690 202.672 202.671 202.676 3 8:40:17 202.674 202.655 202.609 202.659 202.655 202.691 202.674 202.672 202.677 4 8:41:17 202.674 202.653 202.608 202.658 202.654 202.689 202.673 202.671 202.676 5 8:42:17 202.674 202.654 202.609 202.658 202.654 202.691 202.673 202.672 202.676 6 8:43:17 202.673 202.654 202.609 202.659 202.654 202.689 202.672 202.670 202.675 7 8:44:17 202.672 202.655 202.608 202.660 202.655 202.690 202.673 202.671 202.676 8 8:45:17 202.673 202.655 202.610 202.659 202.654 202.690 202.674 202.670 202.676 9 8:46:17 202.673 202.656 202.610 202.659 202.655 202.690 202.674 202.672 202.677 10 8:47:17 202.675 202.657 202.611 202.660 202.655 202.691 202.674 202.673 202.677 11 8:48:17 202.674 202.655 202.610 202.660 202.656 202.692 202.674 202.673 202.677 12 8:49:17 202.674 202.655 202.609 202.658 202.654 202.691 202.674 202.673 202.677 13 8:50:17 202.673 202.655 202.609 202.659 202.655 202.689 202.673 202.672 202.676 14 8:51:17 202.674 202.657 202.610 202.660 202.657 202.692 202.674 202.672 202.676 15 8:52:17 202.673 202.655 202.609 202.658 202.654 202.690 202.674 202.673 202.676 16 8:53:17 202.674 202.654 202.608 202.658 202.654 202.689 202.673 202.671 202.677 17 8:54:17 202.673 202.655 202.610 202.660 202.655 202.691 202.673 202.672 202.676 18 8:55:17 202.674 202.655 202.610 202.659 202.656 202.691 202.674 202.673 202.679 19 8:56:17 202.674 202.655 202.609 202.660 202.655 202.691 202.674 202.671 202.676 20 8:57:17 202.674 202.655 202.608 202.657 202.654 202.691 202.674 202.672 202.678 21 8:58:17 202.673 202.656 202.610 202.660 202.655 202.692 202.674 202.671 202.676 22 8:59:17 202.674 202.655 202.609 202.659 202.655 202.691 202.673 202.673 202.679 23 9:00:17 202.673 202.655 202.609 202.659 202.655 202.691 202.674 202.672 202.676 24 9:01:17 202.673 202.655 202.609 202.659 202.654 202.690 202.672 202.671 202.677 25 9:02:17 202.674 202.656 202.610 202.659 202.655 202.692 202.674 202.674 202.678 26 9:03:17 202.674 202.655 202.609 202.659 202.655 202.691 202.673 202.673 202.677 27 9:04:17 202.675 202.656 202.610 202.659 202.656 202.692 202.674 202.672 202.676 28 9:05:17 202.674 202.656 202.610 202.660 202.655 202.690 202.674 202.672 202.677 29 9:06:17 202.675 202.657 102.611 202.661 202.655 202.690 202.675 202.672 202.678 30 9:07:17 202.675 202.656 202.610 202.659 202.656 202.691 202.674 202.671 202.677 最大變化 0.003 0.004 0.003 0.004 0.002 0.003 0.003 0.004 0.004 0.002 試驗結(jié)論：在202℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度變化之差不大于0.002℃，遠小于恒溫槽水平溫差0.01℃、垂直溫差0.02℃的技術(shù)要求。 5.6 測試溫度202℃ 序號 時間 #1(℃) #2(℃) #3(℃) #4(℃) #5(℃) #6(℃) #7(℃) #8(℃) #9(℃) 1 9:23:09 202.673 202.654 202.609 202.658 202.654 202.690 202.672 202.671 202.677 2 9:24:09 202.673 202.655 202.610 202.660 202.655 202.691 202.673 202.672 202.677 3 9:25:09 202.673 202.654 202.610 202.658 202.654 202.692 202.673 202.673 202.678 4 9:26:09 202.673 202.654 202.609 202.658 202.654 202.691 202.671 202.674 202.678 5 9:27:09 202.674 202.654 202.609 202.657 202.654 202.690 202.672 202.673 202.678 6 9:28:09 202.674 202.656 202.610 202.660 202.656 202.691 202.673 202.672 202.677 7 9:29:09 202.673 202.655 202.610 202.659 202.656 202.691 202.673 202.673 202.677 8 9:30:09 202.674 202.653 202.609 202.660 202.655 202.692 202.673 202.674 202.679 9 9:31:09 202.675 202.656 202.610 202.660 202.655 202.691 202.673 202.672 202.678 10 9:32:09 202.674 202.655 202.610 202.659 202.654 202.692 202.673 202.672 202.677 11 9:33:09 202.675 202.655 202.609 202.658 202.656 202.691 202.673 202.674 202.679 12 9:34:09 202.673 202.654 202.609 202.659 202.655 202.690 202.673 202.670 202.677 13 9:35:09 202.673 202.654 202.609 202.657 202.654 202.691 202.672 202.673 202.678 14 9:36:09 202.675 202.655 202.609 202.658 202.654 202.691 202.673 202.674 202.679 15 9:37:09 202.674 202.655 202.610 202.659 202.656 202.691 202.673 202.672 202.677 16 9:38:09 202.674 202.654 202.609 202.658 202.655 202.692 202.672 202.673 202.679 17 7:39:09 202.672 202.654 202.609 202.659 202.654 202.689 202.672 202.672 202.678 18 9:40:09 202.673 202.655 202.609 202.659 202.654 202.691 202.672 202.671 202.677 19 9:41:09 202.673 202.654 202.609 202.659 202.654 202.691 202.673 202.673 202.678 20 9:42:09 202.675 202.655 202.609 202.659 202.654 202.689 202.673 202.672 202.679 21 9:43:09 202.672 202.654 202.610 202.659 202.655 202.690 202.672 202.671 202.677 22 9:44:09 202.675 202.654 202.609 202.659 202.654 202.691 202.673 202.673 202.678 23 9:45:09 202.675 202.655 202.610 202.659 202.656 202.692 202.674 202.674 202.680 24 9:46:09 202.673 202.655 202.609 202.659 202.655 202.691 202.673 202.672 202.677 25 9:47:09 202.673 202.654 202.609 202.658 202.655 202.690 202.673 202.673 202.678 26 9:48:09 202.673 202.656 202.611 202.659 202.655 202.691 202.673 202.672 202.677 27 9:49:09 202.674 202.655 202.610 202.659 202.655 202.692 202.673 202.674 202.679 28 9:50:09 202.674 202.656 202.610 202.660 202.656 202.691 202.673 202.674 202.680 29 9:51:09 202.673 202.655 202.610 202.659 202.657 202.692 202.674 202.674 202.679 30 9:52:09 202.673 202.655 202.609 202.658 202.655 202.691 202.673 202.674 202.679 最大變化 0.002 0.002 0.001 0.003 0.003 0.003 0.003 0.003 0.003 0.002 試驗結(jié)論：在202℃時，恒溫槽正常運行狀態(tài)下，30min內(nèi)，主要測試位置的溫度變化之差不大于0.002℃，遠小于恒溫槽水平溫差0.01℃、垂直溫差0.02℃的技術(shù)要求。 6 試驗結(jié)論 恒溫槽正常運行狀態(tài)下，主要測試位置的溫度的變化之差遠小于恒溫槽水平溫差、垂直溫差。即恒溫槽溫場可以保持較長時間的穩(wěn)定性。 恒溫槽溫場測試即可以采用多點同步測溫，也可以采用“雙探針”法，通過多次測試，最終獲得恒溫槽所有位置的溫度測試。 二、鉑熱電阻穩(wěn)定性測試 1 試驗目的 考察鉑熱電阻短期穩(wěn)定性指標，為標準鉑電阻溫度計漏熱試驗提供不確定度分析的數(shù)據(jù)支持 2 測試設備： 序號 名稱 型號，編號 1 水三相點瓶 DFTP-1 DF6083 2 精密直流電橋 micro k-125 32066/1 3 銦固定點爐 NIM-T-In G-201405232-002 4 錫固定點爐 NIM-T-S G-201405232-001 5 標準鉑電阻溫度計 WZPB-I 11252 3 測試方法 經(jīng)篩選高穩(wěn)定性鉑熱電阻3支，利用固定點考察其穩(wěn)定性，同時用標準鉑電阻