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酸度計溫度補償作用及PH電校正方法
酸(suan)度(du)(du)(du)(du)(du)(du)計(ji)(ji)的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)作用(yong)酸(suan)度(du)(du)(du)(du)(du)(du)計(ji)(ji)的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)應包(bao)含三部分：電(dian)(dian)斜(xie)率的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)、電(dian)(dian)零點(dian)(包(bao)括測量(liang)電(dian)(dian)和參比(bi)電(dian)(dian))的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)。而酸(suan)度(du)(du)(du)(du)(du)(du)計(ji)(ji)上設(she)置的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)，只是(shi)補(bu)償(chang)(chang)電(dian)(dian)的(de)(de)(de)斜(xie)率項(2.303RT/F)。因此，溫(wen)(wen)度(du)(du)(du)(du)(du)(du)補(bu)償(chang)(chang)對酸(suan)度(du)(du)(du)(du)(du)(du)計(ji)(ji)測量(liang)并(bing)不是(shi)很(hen)(hen)(hen)充(chong)分的(de)(de)(de)，也不能消除由溫(wen)(wen)度(du)(du)(du)(du)(du)(du)引起(qi)(qi)的(de)(de)(de)誤(wu)差(cha)。只是(shi)由于溶液(ye)的(de)(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)項和電(dian)(dian)零點(dian)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)項，一是(shi)無(wu)法確(que)定，二(er)是(shi)引起(qi)(qi)的(de)(de)(de)誤(wu)差(cha)很(hen)(hen)(hen)小(xiao)，故(gu)略去不計(ji)(ji).PH電(dian)(dian)校正常識PH電(dian)(dian)使用(yong)一段時間后，不對稱電(dian)(dian)位將會(hui)發生很(hen)(hen)(hen)大(da)改變，故(gu)必須定期校準(zhun)。酸(suan)度(du)(du)(du)(du)(du)(du)計(ji)(ji)電(dian)(dian)標定校準(zhun)的(de)(de)(de)次數取(qu)決于試樣(yang)，電(dian)(dian)性能及對測量(liang)的(de)(de)(de)度(du)(du)(du)(du)(du)(du)要求。高精度(du)(du)(du)(du)(du)(du)測量(liang)(≤...
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常用PH計正確使用與維護
酸(suan)度計簡稱pH計，由電(dian)(dian)和電(dian)(dian)計兩部分(fen)組成。使(shi)(shi)用(yong)中若能夠合理(li)維護(hu)(hu)電(dian)(dian)、按要求配制標準緩沖(chong)液(ye)和正確操(cao)作電(dian)(dian)計,可大大減小pH示值誤(wu)差(cha)，從(cong)而提高化學實(shi)驗、醫(yi)學檢驗數據的(de)(de)性。一(yi)(yi)、正確使(shi)(shi)用(yong)與(yu)保養電(dian)(dian)目前實(shi)驗室使(shi)(shi)用(yong)的(de)(de)電(dian)(dian)都是復合電(dian)(dian)，其(qi)優點(dian)是使(shi)(shi)用(yong)方便，不受氧化性或還原(yuan)性物質(zhi)的(de)(de)影(ying)響，且平衡速度較快。使(shi)(shi)用(yong)時，將(jiang)電(dian)(dian)加液(ye)口上所套(tao)的(de)(de)橡膠套(tao)和下(xia)端的(de)(de)橡皮套(tao)全取下(xia)，以保持電(dian)(dian)內氯(lv)化鉀溶液(ye)的(de)(de)液(ye)壓差(cha)。下(xia)面就(jiu)把電(dian)(dian)的(de)(de)使(shi)(shi)用(yong)與(yu)維護(hu)(hu)簡單作一(yi)(yi)介紹(shao)：⒈復合電(dian)(dian)不用(yong)時，可充分(fen)浸(jin)泡(pao)3M氯(lv)化鉀溶液(ye)中。切忌用(yong)洗滌液(ye)或其(qi)他吸水性試(shi)劑浸(jin)洗。⒉使(shi)(shi)用(yong)前...
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雙層玻璃反應釜的安裝步驟
雙層玻璃反應(ying)釜(fu)(fu)的(de)安(an)裝(zhuang)步驟：1、打開包裝(zhuang)后(hou)(hou)，按(an)照裝(zhuang)箱清單檢查本機(ji)的(de)主要配件(jian)(jian)是否(fou)齊全(quan)。2、將不銹鋼管與固(gu)(gu)定(ding)件(jian)(jian)按(an)照附圖所示組(zu)裝(zhuang)框(kuang)架(jia)。3、將電(dian)氣箱安(an)裝(zhuang)在(zai)(zai)右后(hou)(hou)立(li)(li)桿(gan)頂端(duan)并旋(xuan)緊螺釘(ding)，插(cha)上(shang)七芯插(cha)頭，真(zhen)空表安(an)裝(zhuang)在(zai)(zai)后(hou)(hou)端(duan)，擰(ning)緊螺釘(ding)即可。4、根據使(shi)用高度，將釜(fu)(fu)圓(yuan)形(xing)托架(jia)固(gu)(gu)定(ding)在(zai)(zai)立(li)(li)桿(gan)滑(hua)(hua)塊上(shang)，釜(fu)(fu)放在(zai)(zai)托架(jia)上(shang)，半圓(yuan)型抱箍用于固(gu)(gu)定(ding)釜(fu)(fu)頸部，分別(bie)插(cha)入立(li)(li)桿(gan)滑(hua)(hua)塊，合攏后(hou)(hou)擰(ning)緊固(gu)(gu)定(ding)螺絲，安(an)裝(zhuang)時注意(yi)反應(ying)釜(fu)(fu)主體垂(chui)直。5、攪拌棒(bang)固(gu)(gu)定(ding)在(zai)(zai)電(dian)機(ji)主軸的(de)齒環夾(jia)頭上(shang)，攪拌棒(bang)穿(chuan)過蓋中間旋(xuan)轉軸承，擰(ning)緊連接器，然(ran)后(hou)(hou)調整電(dian)機(ji)的(de)位置，注意(yi)垂(chui)直同心度。6...
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反應釜使用注意事項及常見故障分析
反應釜使用注(zhu)意(yi)事項：1、應嚴(yan)格按產品(pin)銘牌上標定(ding)(ding)的(de)工作(zuo)(zuo)壓力和(he)(he)工作(zuo)(zuo)溫度操(cao)作(zuo)(zuo)使用，以免造成危險。2、嚴(yan)格遵(zun)守產品(pin)使用說明書中關于冷(leng)卻、注(zhu)油等方(fang)面(mian)(mian)(mian)的(de)規(gui)定(ding)(ding)，做(zuo)好設備的(de)維護和(he)(he)保(bao)養。3、所有閥門使用時，應緩慢轉動閥桿(針(zhen))，壓緊(jin)密(mi)封面(mian)(mian)(mian)，達到密(mi)封效果。關閉時不易用力過猛，以免損壞密(mi)封面(mian)(mian)(mian)。4、電氣控制儀表(biao)應由專(zhuan)人操(cao)作(zuo)(zuo)，并按規(gui)定(ding)(ding)設置過載保(bao)護設施。反應釜常見故障現象(xiang)及(ji)原因：1、故障現象(xiang)：密(mi)封面(mian)(mian)(mian)處出現泄漏。故障原因：螺桿螺紋松(song)動；密(mi)封面(mian)(mian)(mian)損傷(shang)。排除方(fang)法：將螺桿重(zhong)新上緊(jin)；重(zhong)新修(xiu)磨拋光(guang)密(mi)封面(mian)(mian)(mian)。2、故障現象(xiang)...
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低溫冷卻液循環泵的用途和特點
DLSB系列低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)冷(leng)卻液循環(huan)泵采用風(feng)(feng)冷(leng)式(shi)全封(feng)閉(bi)壓縮(suo)機(ji)(ji)組制(zhi)(zhi)(zhi)冷(leng)及微(wei)(wei)機(ji)(ji)智能(neng)控(kong)制(zhi)(zhi)(zhi)系統，提供低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)冷(leng)卻水(shui)(液)流或(huo)低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)恒(heng)溫(wen)(wen)(wen)(wen)(wen)水(shui)(液)流，以滿足(zu)用冷(leng)卻水(shui)及低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)液體(ti)去降溫(wen)(wen)(wen)(wen)(wen)或(huo)恒(heng)溫(wen)(wen)(wen)(wen)(wen)儀器，如旋(xuan)轉(zhuan)蒸發(fa)器、電(dian)子(zi)顯微(wei)(wei)鏡、低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)化學反(fan)應釜、電(dian)子(zi)能(neng)譜儀、密(mi)度(du)儀、冷(leng)凍干(gan)燥(zao)儀、反(fan)應釜等(deng)，也可(ke)把多(duo)種溶劑直接在槽(cao)內低(di)(di)(di)溫(wen)(wen)(wen)(wen)(wen)恒(heng)溫(wen)(wen)(wen)(wen)(wen)實驗。產品特(te)點：1、風(feng)(feng)冷(leng)式(shi)全封(feng)閉(bi)壓縮(suo)機(ji)(ji)組制(zhi)(zhi)(zhi)冷(leng)，微(wei)(wei)機(ji)(ji)智能(neng)制(zhi)(zhi)(zhi)冷(leng)控(kong)制(zhi)(zhi)(zhi)系統自(zi)動開啟，制(zhi)(zhi)(zhi)冷(leng)系統具有延時、過(guo)熱、過(guo)電(dian)流等(deng)多(duo)重保(bao)護裝置。2、循環(huan)泵可(ke)將槽(cao)內冷(leng)液輸出，冷(leng)卻或(huo)恒(heng)溫(wen)(wen)(wen)(wen)(wen)機(ji)(ji)外實驗容器或(huo)建立(li)第二(er)恒(heng)溫(wen)(wen)(wen)(wen)(wen)場。3、微(wei)(wei)機(ji)(ji)設(she)有...
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溫控儀簡單故障診斷
溫(wen)(wen)控(kong)(kong)(kong)(kong)儀是(shi)調控(kong)(kong)(kong)(kong)一(yi)體(ti)(ti)化智能溫(wen)(wen)度(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)儀表，它采用了全(quan)數字化集成(cheng)設計(ji)(ji)，具(ju)有溫(wen)(wen)度(du)曲(qu)線(xian)可編程或定點恒溫(wen)(wen)控(kong)(kong)(kong)(kong)制(zhi)(zhi)、多(duo)重(zhong)PID調節、輸出功(gong)率限幅曲(qu)線(xian)編程、手動/自動切(qie)換(huan)、軟(ruan)啟動、報警開關量輸出、實時(shi)數據(ju)查詢、與計(ji)(ji)算機通(tong)訊(xun)等功(gong)能，將數顯溫(wen)(wen)度(du)儀表和ZK晶(jing)閘(zha)(zha)管電壓(ya)調整(zheng)器合二為一(yi)，集溫(wen)(wen)度(du)測(ce)量、調節、驅動于一(yi)體(ti)(ti)，儀表直(zhi)接(jie)輸出晶(jing)閘(zha)(zha)管觸發(fa)信(xin)號，可驅動各(ge)類晶(jing)閘(zha)(zha)管負載。溫(wen)(wen)控(kong)(kong)(kong)(kong)儀遇到故(gu)障(zhang)的簡單診斷(duan)：1、溫(wen)(wen)控(kong)(kong)(kong)(kong)儀發(fa)生故(gu)障(zhang)時(shi)，在進行故(gu)障(zhang)判斷(duan)前我(wo)們要先(xian)注意一(yi)個(ge)問題，即系統內采用的溫(wen)(wen)控(kong)(kong)(kong)(kong)儀是(shi)否多(duo)采用電動儀表測(ce)量、指示和控(kong)(kong)(kong)(kong)制(zhi)(zhi)儀，如...
