用K型热电偶测温,一直回路热电势为15mV,冷端温度为20度,求热端温度 用K型热电偶测某设备的温度，测得的热电势为20mV，冷端（室...
\u7528k\u578b\u70ed\u7535\u5076\u6d4b\u67d0\u8bbe\u5907\u7684\u6e29\u5ea6\uff0c\u6d4b\u5f97\u7684\u70ed\u7535\u52bf\u4e3a20mv,\u51b7\u7aef(\u5ba4\u6e29)\u4e3a25C\uff0c\u5219\u8be5\u8bbe\u5907\u7684\u6e29\u5ea6\u4e3a\uff1f\u3000\u3000508.3\u2103
\u3000\u3000K\u578b\u70ed\u7535\u5076\u51b7\u7aef25\u2103\u5bf9\u5e94\u7684\u8865\u507f\u7535\u52bf\u4e3a 1.000 mV
\u3000\u300020.000mv+1.000mV=21.000mV\uff0c\u5bf9\u5e94\u6e29\u5ea6\u4e3a508.32\u2103
\u6211\u624b\u5934\u6ca1\u6709\u70ed\u7535\u5bf9\u7167\u8868\uff0c\u53ea\u80fd\u544a\u8bc9\u4f60\u65b9\u6cd5\u3002\u70ed\u7535\u5076\u6d4b\u6e29\u7684\u4e00\u4e2a\u57fa\u672c\u539f\u7406\u662f\uff1a\u70ed\u7535\u52bf\u662f\u6e29\u5ea6\u7684\u51fd\u6570\u5dee\u3002\u6ce8\u610f\uff1a\u4e0d\u662f\u6e29\u5dee\u7684\u51fd\u6570\uff01\u8fd9\u610f\u601d\u5c31\u662f\u4ee5\u6b64\u9898\u4e3a\u4f8b\uff1a\u5e94\u5f53\u5148\u5c06\u51b7\u7aef25\u00b0\u7684\u7535\u52bf\u67e5\u5904\uff08K\u5206\u5ea6\u5e94\u5f53\u662f1mV\u5de6\u53f3\uff09\uff0c\u52a0\u523020mV\u4e0a\u5f9721mV\uff0c\u7136\u540e\u518d\u67e521mV\u6240\u5bf9\u5e94\u7684\u6e29\u5ea6\uff0c\u4f30\u8ba1\u5e94\u8be5\u662f509\u00b0\u5de6\u53f3\u3002
\u5982\u679c\u91c7\u7528E\u578b\u70ed\u7535\u5076\u6d4b\u91cf\uff0c\u5e94\u5f53\u5148\u67e5509\u00b0\u6240\u5bf9\u5e94\u7684\u70ed\u7535\u52bf\uff0c\u518d\u51cf\u53bb25\u00b0\u6240\u5bf9\u5e94\u7684\u70ed\u7535\u52bf\uff0c\u5373\u4e3a\u6240\u6c42\u3002\u4e0d\u53ef\u4ee5\u5148\u7528509\u00b0\u51cf25\u00b0\uff0c\u518d\u7528509-25=584\u53bb\u67e5\u70ed\u7535\u5bf9\u7167\u8868\uff0c\u90a3\u662f\u4e0d\u5bf9\u7684\u3002
附件是K 型热电偶的分度值表，从表中可查得15mV对应的温度在360~370度之间（约366度），——这是热端和冷端间的温度差。因此热端的温度应该是 (366+20)=386 度
绛旓細闄勪欢鏄K 鍨嬬儹鐢靛伓鐨勫垎搴﹀艰〃锛屼粠琛ㄤ腑鍙煡寰15mV瀵瑰簲鐨勬俯搴﹀湪360~370搴︿箣闂达紙绾366搴︼級锛屸斺旇繖鏄儹绔拰鍐风闂寸殑娓╁害宸傚洜姝ょ儹绔殑娓╁害搴旇鏄 (366+20)=386 搴
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绛旓細鎸夊彸鍥剧粍鎴愮殑鐑數鍋惰晩鍙娴嬫俯鐢靛伓涓1 锛屽鏋滃皢鐑數鍋剁殑鐑鍔犵儹锛屼娇寰楀喎銆佺儹涓ょ鐨勬俯搴︿笉鍚岋紝鍒欏湪璇鐑數鍋跺洖璺涓氨浼氫骇鐢熺儹鐢靛娍锛岃繖绉嶇墿鐞嗙幇璞″氨绉颁负鐑數鐜拌薄(鍗崇儹鐢垫晥搴)銆傚湪鐑數鍋跺洖璺腑浜х敓鐨勭數鍔跨敱娓╁樊鐢靛娍鍜屾帴瑙︾數鍔夸袱閮ㄥ垎缁勬垚銆傛帴瑙︾數鍔匡細瀹冩槸涓ょ鐢靛瓙瀵嗗害涓嶅悓鐨勫浣撶浉浜掓帴瑙︽椂浜х敓鐨勪竴绉嶇儹鐢靛娍銆...
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绛旓細K鍨嬬儹鐢靛伓閫氬父鐢辨劅娓╁厓浠躲佸畨瑁呭浐瀹氳缃拰鎺ョ嚎鐩掔瓑涓昏閮ㄤ欢缁勬垚銆侹鍨嬬儹鐢靛伓鐨勬俯搴﹀煎拰鐑數鍔跨殑瀵规瘮鍏崇郴涓鑸兘鍙互閫氳繃K鍨嬬儹鐢靛伓鍒嗗害琛ㄥ嵆K鍨鐑數鍔ㄥ娍瀵圭収琛ㄦ煡鍒帮紝閫氳繃鏌ヨ〃鍙煡锛欿鍨嬬儹鐢靛伓姣忓崌娓╀竴搴︼紝鍦ㄤ笉鍚岀殑娓╁害娈电儹鐢靛娍鍙樺寲鐣ユ湁涓嶅悓锛屼竴鑸湪0.042銆0.041mV宸﹀彸鍙樺寲銆
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