土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)緊實度(du)(du)是土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)的(de)(de)(de)一個重(zhong)(zhong)要(yao)結構特征，通常用(yong)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)和土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)孔(kong)隙度(du)(du)作(zuo)為衡量(liang)(liang)指(zhi)(zhi)標。土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)是指(zhi)(zhi)單位(wei)容(rong)(rong)(rong)(rong)(rong)積土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)的(de)(de)(de)干重(zhong)(zhong)，用(yong)這(zhe)個指(zhi)(zhi)標衡量(liang)(liang)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)緊實度(du)(du)的(de)(de)(de)缺點是土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)受土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)膨(peng)脹(zhang)和收縮的(de)(de)(de)影響(xiang)，因(yin)(yin)此在(zai)描述土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)緊實度(du)(du)時需要(yao)指(zhi)(zhi)出土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)的(de)(de)(de)含水量(liang)(liang)。此外，不同(tong)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)質地和有機質含量(liang)(liang)也(ye)影響(xiang)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)的(de)(de)(de)大小，所以用(yong)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)表(biao)征不同(tong)類型土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)緊實度(du)(du)的(de)(de)(de)可比(bi)(bi)性較(jiao)差。土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)孔(kong)隙度(du)(du)是指(zhi)(zhi)全部孔(kong)隙容(rong)(rong)(rong)(rong)(rong)積與土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)積的(de)(de)(de)比(bi)(bi)率(lv)(lv)，影響(xiang)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)容(rong)(rong)(rong)(rong)(rong)重(zhong)(zhong)的(de)(de)(de)因(yin)(yin)素同(tong)樣(yang)也(ye)影響(xiang)土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)孔(kong)隙度(du)(du)。另(ling)外，土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)水入(ru)滲速率(lv)(lv)和土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)強度(du)(du)有時也(ye)被(bei)用(yong)來表(biao)征土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)的(de)(de)(de)緊實度(du)(du)，但它們同(tong)樣(yang)存(cun)在(zai)不同(tong)類型土(tu)(tu)(tu)(tu)壤(rang)(rang)(rang)之間難以比(bi)(bi)較(jiao)...
發(fa)布(bu)日期：2018-04-23
溫(wen)度(du)記錄儀檢(jian)定檢(jian)驗規(gui)程(cheng)本標(biao)準(zhun)遵循(xun)智(zhi)拓儀器生(sheng)產規(gui)范編號：QSZT/GL-10，主要規(gui)范生(sheng)產及檢(jian)定溫(wen)度(du)記錄儀在低(di)溫(wen)恒(heng)溫(wen)槽中(zhong)與(yu)標(biao)準(zhun)表的(de)(de)對比操(cao)作(zuo)。低(di)溫(wen)恒(heng)溫(wen)槽操(cao)作(zuo)規(gui)程(cheng)1.槽內加(jia)入液(ye)(ye)體(ti)介質，液(ye)(ye)體(ti)介質液(ye)(ye)面不能低(di)于工(gong)作(zuo)臺板30mm.2.液(ye)(ye)體(ti)介質的(de)(de)選(xuan)用(yong):A:工(gong)作(zuo)溫(wen)度(du)低(di)于5℃時(shi),液(ye)(ye)體(ti)介質一(yi)(yi)般選(xuan)用(yong)酒精.B:工(gong)作(zuo)溫(wen)度(du)5--80℃時(shi),液(ye)(ye)體(ti)介質一(yi)(yi)般選(xuan)用(yong)純凈水(shui)(shui).C:工(gong)作(zuo)溫(wen)度(du)80--90℃時(shi),液(ye)(ye)體(ti)介質一(yi)(yi)般選(xuan)用(yong)15％甘油(you)水(shui)(shui)溶液(ye)(ye).D:工(gong)作(zuo)溫(wen)度(du)90--100℃時(shi),液(ye)(ye)體(ti)介質一(yi)(yi)般選(xuan)用(yong)油(you).3.循(xun)環泵(beng)的(de)(de)連接A:內循(xun)環泵(beng)的(de)(de)連接,將出液(ye)(ye)管與(yu)進液(ye)(ye)...
發布日期：2018-04-19
土壤(rang)水(shui)(shui)(shui)(shui)分(fen)記(ji)錄儀(yi)指(zhi)導(dao)農業用戶大(da)棚(peng)(peng)灌(guan)溉土壤(rang)水(shui)(shui)(shui)(shui)是(shi)植(zhi)物吸收水(shui)(shui)(shui)(shui)分(fen)的(de)主(zhu)要(yao)來(lai)源(yuan)，土壤(rang)水(shui)(shui)(shui)(shui)的(de)主(zhu)要(yao)來(lai)源(yuan)是(shi)降(jiang)水(shui)(shui)(shui)(shui)和灌(guan)溉水(shui)(shui)(shui)(shui)；在(zai)(zai)過去(qu)農作物澆(jiao)(jiao)水(shui)(shui)(shui)(shui)都是(shi)憑借個人經驗，不(bu)(bu)能保證合(he)理灌(guan)溉，因此導(dao)致產量不(bu)(bu)佳，隨著儀(yi)器儀(yi)表的(de)發展(zhan)，我(wo)們(men)可(ke)(ke)以利用現代的(de)儀(yi)器技術(shu)—土壤(rang)水(shui)(shui)(shui)(shui)分(fen)記(ji)錄儀(yi)進(jin)行預先測量土壤(rang)含水(shui)(shui)(shui)(shui)量，從而正確指(zhi)導(dao)農戶灌(guan)溉。利用土壤(rang)水(shui)(shui)(shui)(shui)分(fen)記(ji)錄儀(yi)可(ke)(ke)以了解(jie)棚(peng)(peng)內不(bu)(bu)同(tong)部(bu)位(wei)澆(jiao)(jiao)水(shui)(shui)(shui)(shui)要(yao)有(you)所區(qu)(qu)別大(da)棚(peng)(peng)各(ge)部(bu)位(wei)的(de)溫(wen)(wen)度相差(cha)較大(da)，澆(jiao)(jiao)水(shui)(shui)(shui)(shui)量也要(yao)有(you)所區(qu)(qu)別。下面我(wo)們(men)在(zai)(zai)棚(peng)(peng)內不(bu)(bu)同(tong)位(wei)置，水(shui)(shui)(shui)(shui)分(fen)區(qu)(qu)別做(zuo)詳(xiang)細介紹：如大(da)棚(peng)(peng)南(nan)端及靠近(jin)加(jia)溫(wen)(wen)火(huo)爐、煙道等(deng)熱源(yuan)的(de)地方，土壤(rang)水(shui)(shui)(shui)(shui)分(fen)的(de)蒸發量要(yao)大(da)些，澆(jiao)(jiao)水(shui)(shui)(shui)(shui)量可(ke)(ke)適當大(da)...
發(fa)布日期(qi)：2018-04-19
高(gao)(gao)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度記(ji)錄(lu)(lu)儀(yi)(yi)設(she)計原理一(yi)、高(gao)(gao)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度記(ji)錄(lu)(lu)儀(yi)(yi)設(she)計背景高(gao)(gao)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度記(ji)錄(lu)(lu)儀(yi)(yi)應(ying)(ying)用于非常多(duo)的(de)領域，具有非常高(gao)(gao)的(de)商業價值，比(bi)如說，食品(pin)、醫藥、電子(zi)和化(hua)(hua)工行業的(de)倉庫，冷庫，陰涼(liang)庫，實驗室，凈化(hua)(hua)車(che)間，電子(zi)封裝材料倉庫，運輸車(che)等需要溫(wen)(wen)(wen)(wen)度測量(liang)的(de)場合，特別是主要使用于一(yi)些溫(wen)(wen)(wen)(wen)度較高(gao)(gao)的(de)環境(jing)下，比(bi)如蒸(zheng)鍋(guo)，蒸(zheng)箱(xiang)，油鍋(guo)，殺菌鍋(guo)，反應(ying)(ying)釜等等高(gao)(gao)溫(wen)(wen)(wen)(wen)環境(jing)。二、高(gao)(gao)溫(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)度記(ji)錄(lu)(lu)儀(yi)(yi)設(she)計方案1.傳感器(qi)的(de)選擇不同傳感器(qi)特點(dian)對比(bi):熱(re)電偶RTD熱(re)敏電阻集(ji)成硅(gui)溫(wen)(wen)(wen)(wen)度范圍?270至(zhi)1800°C?250至(zhi)900°C?100至(zhi)450°C-55至(zhi)150°C靈敏度幾十個...
發布日期：2018-04-19
已有保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)廠家如何加裝保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)記(ji)錄儀及(ji)(ji)(ji)保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)監控系(xi)統已有保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)廠家如何加裝保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)記(ji)錄儀必(bi)須使用(yong)(yong)保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)記(ji)錄儀及(ji)(ji)(ji)保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)監控系(xi)統背景：《醫療器械經(jing)營質量(liang)管理規(gui)范(fan)》的(de)出(chu)臺，更多醫療器械單(dan)位以及(ji)(ji)(ji)醫藥批發企(qi)業保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)必(bi)須應當配(pei)保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)溫(wen)(wen)(wen)度(du)(du)記(ji)錄儀，以此保(bao)(bao)(bao)(bao)(bao)(bao)證(zheng)在生(sheng)產、經(jing)營、使用(yong)(yong)、各(ge)個環節始終處于符(fu)合新(xin)版規(gui)范(fan)的(de)要求。詳(xiang)細《醫療器械經(jing)營質量(liang)管理規(gui)范(fan)》規(gui)定如下：1.（冷(leng)(leng)(leng)藏箱(xiang)(xiang)、保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)）冷(leng)(leng)(leng)藏箱(xiang)(xiang)、保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)應具有良好(hao)的(de)保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)功能(neng)。冷(leng)(leng)(leng)藏箱(xiang)(xiang)應能(neng)自動調節箱(xiang)(xiang)體(ti)內溫(wen)(wen)(wen)度(du)(du)；保(bao)(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)箱(xiang)(xiang)應配(pei)備蓄冷(leng)(leng)(leng)劑(ji)及(ji)(ji)(ji)隔(ge)溫(wen)(wen)(wen)裝置，并符(fu)合產品標簽說明書(shu)標示(shi)的(de)儲...
發布日期(qi)：2018-03-31
如(ru)何正確(que)的(de)(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)溫(wen)濕(shi)度(du)(du)記(ji)(ji)(ji)錄儀？隨著傳(chuan)感器(qi)(qi)技術(shu)的(de)(de)(de)(de)(de)(de)(de)發展，以(yi)溫(wen)濕(shi)度(du)(du)記(ji)(ji)(ji)錄儀為(wei)代表(biao)(biao)的(de)(de)(de)(de)(de)(de)(de)環境檢測儀器(qi)(qi)在越來(lai)越多(duo)的(de)(de)(de)(de)(de)(de)(de)行(xing)業中(zhong)的(de)(de)(de)(de)(de)(de)(de)到(dao)了(le)應用，而隨著市面上溫(wen)濕(shi)度(du)(du)記(ji)(ji)(ji)錄儀儀器(qi)(qi)種(zhong)(zhong)類(lei)和(he)(he)數量(liang)的(de)(de)(de)(de)(de)(de)(de)不斷增多(duo)，這也給行(xing)業人員的(de)(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)帶來(lai)了(le)一(yi)定的(de)(de)(de)(de)(de)(de)(de)難度(du)(du)，那么如(ru)何在種(zhong)(zhong)類(lei)繁多(duo)，參差不齊的(de)(de)(de)(de)(de)(de)(de)儀器(qi)(qi)儀表(biao)(biao)中(zhong)正確(que)的(de)(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)符合(he)自身(shen)需要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)溫(wen)濕(shi)度(du)(du)記(ji)(ji)(ji)錄儀，是(shi)購買者需要(yao)(yao)考慮(lv)的(de)(de)(de)(de)(de)(de)(de)一(yi)個問題。總(zong)的(de)(de)(de)(de)(de)(de)(de)來(lai)說，溫(wen)濕(shi)度(du)(du)記(ji)(ji)(ji)錄儀的(de)(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)標準主要(yao)(yao)有兩點，*點是(shi)適應性(xing)(xing)的(de)(de)(de)(de)(de)(de)(de)問題，即需要(yao)(yao)考慮(lv)實(shi)際的(de)(de)(de)(de)(de)(de)(de)應用環境和(he)(he)要(yao)(yao)求，如(ru)量(liang)程(cheng)、輸出和(he)(he)顯示、安裝方式、采樣方式、氣體種(zhong)(zhong)類(lei)、材料和(he)(he)結構、控制(zhi)監測要(yao)(yao)求、環境危險性(xing)(xing)等。而且溫(wen)...
發布日期(qi)：2018-03-30
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