恒(Heng)温(Wen)恒(Heng)湿(Shi)试(Shi)验(Yan)箱(Xiang)温(Wen)度(Du)稳(Wen)定(Ding)的(De)好(Hao)方(Fang)法(Fa)

　(?)　(?)通(Tong)常(Chang)来(Lai)说(Shuo)恒(Heng)温(Wen)恒(Heng)湿(Shi)试(Shi)验(Yan)箱(Xiang)的(De)温(Wen)湿(Shi)度(Du)都(Du)会(Hui)有(You)小(Xiao)幅(Fu)度(Du)的(De)偏(Pian)差(Cha)，(?)容(Rong)差(Cha)范(Fan)围(Wei)一(Yi)般(Ban)在(Zai)±2℃(?)或(Huo)±3℃(?)，(?)这(Zhe)其(Qi)实(Shi)是(Shi)考(Kao)虑(Lu)到(Dao)测(Ce)量(Liang)的(De)误(Wu)差(Cha)、(?)温(Wen)度(Du)的(De)缓(Huan)慢(Man)变(Bian)化(Hua)以(Yi)及(Ji)工(Gong)作(Zuo)空(Kong)间(Jian)内(Nei)的(De)温(Wen)度(Du)变(Bian)化(Hua)而(?)确(Que)定(Ding)的(De)。(?)为(Wei)了(Liao)维(Wei)持(Chi)相(Xiang)对(Dui)湿(Shi)度(Du)在(Zai)规(Gui)定(Ding)的(De)容(Rong)差(Cha)范(Fan)围(Wei)内(Nei)，(?)设(She)备(Bei)在(Zai)运(Yun)行(Xing)时(Shi)箱(Xiang)内(Nei)任(Ren)何(He)两(Liang)点(Dian)之(Zhi)间(Jian)的(De)温(Wen)度(Du)差(Cha)必(Bi)须(Xu)只(Zhi)能(Neng)相(Xiang)差(Cha)较(Jiao)小(Xiao)的(De)范(Fan)围(Wei)，(?)如(Ru)果(Guo)温(Wen)度(Du)差(Cha)超(Chao)过(Guo)5℃(?)，(?)那(Na)么(Me)湿(Shi)度(Du)条(Tiao)件(Jian)也(Ye)达(Da)不(Bu)到(Dao)标(Biao)准(Zhun)要(Yao)求(Qiu)，(?)因(Yin)此(Ci)小(Xiao)编(Bian)告(Gao)诉(Su)大(Da)家(Jia)以(Yi)下(Xia)方(Fang)法(Fa)使(Shi)温(Wen)湿(Shi)度(Du)达(Da)到(Dao)稳(Wen)定(Ding)：(?)

　(?)　(?)1、(?)在(Zai)把(Ba)试(Shi)验(Yan)样(Yang)品(Pin)放(Fang)入(Ru)恒(Heng)温(Wen)恒(Heng)湿(Shi)箱(Xiang)里(Li)之(Zhi)前(Qian)，(?)保(Bao)障(Zhang)箱(Xiang)内(Nei)干(Gan)燥(Zao)空(Kong)气(Qi)流(Liu)通(Tong)。(?)

　(?)　(?)2、(?)把(Ba)试(Shi)验(Yan)样(Yang)品(Pin)放(Fang)入(Ru)恒(Heng)温(Wen)恒(Heng)湿(Shi)箱(Xiang)之(Zhi)后(Hou)，(?)将(Jiang)箱(Xiang)温(Wen)调(Diao)至(Zhi)25℃(?)±3K，(?)并(Bing)保(Bao)持(Chi)到(Dao)该(Gai)试(Shi)验(Yan)样(Yang)品(Pin)达(Da)到(Dao)温(Wen)度(Du)稳(Wen)定(Ding)为(Wei)止(Zhi)。(?)

　(?)　(?)这(Zhe)两(Liang)种(Zhong)方(Fang)法(Fa)不(Bu)论(Lun)采(Cai)用(Yong)哪(Na)种(Zhong)，(?)达(Da)到(Dao)温(Wen)度(Du)稳(Wen)定(Ding)时(Shi)间(Jian)，(?)其(Qi)相(Xiang)对(Dui)湿(Shi)度(Du)必(Bi)须(Xu)在(Zai)规(Gui)定(Ding)的(De)试(Shi)验(Yan)用(Yong)的(De)标(Biao)准(Zhun)大(Da)气(Qi)条(Tiao)件(Jian)下(Xia)的(De)限(Xian)值(Zhi)内(Nei)，(?)样(Yang)品(Pin)在(Zai)恒(Heng)温(Wen)恒(Heng)湿(Shi)试(Shi)验(Yan)箱(Xiang)内(Nei)稳(Wen)定(Ding)之(Zhi)后(Hou)，(?)箱(Xiang)内(Nei)的(De)相(Xiang)对(Dui)湿(Shi)度(Du)应(Ying)升(Sheng)到(Dao)不(Bu)小(Xiao)于(Yu)95%，(?)环(Huan)境(Jing)温(Wen)试(Shi)验(Yan)为(Wei)25℃(?)±3℃(?)即(Ji)可(Ke)。(?)