油脂煙點測定儀是用于測定油脂含量的儀器,該儀器采用微電腦控制,液晶顯示,具有測量準確、快速、使用方便等特點,其中綠色、橙色等指示燈,綠色指示燈為加熱工作狀態。橙色指示燈為數字鎖定指示燈。油脂煙點測定儀也可以叫做煙點測定儀 ,是依據國家標準GB/T20795-2006《植物油脂煙點測定》第5條“**法目視測定方法”研制的用于測定植物油脂煙點的專用儀器,是專用于測定植物油脂的,因此有時也被叫做油脂煙點測定儀 。如今,油脂煙點測定儀已經**應用于各類質量監督機構、進出口機構、油脂加工、食品加工、科研單位、農業育種單位等,用于對植物油脂的測定。 油脂(zhi)煙(yan)(yan)點測定(ding)儀使用方法:打開(kai)儀器(qi)右側下電源開(kai)關(guan)顯(xian)(xian)數(shu)(shu)(shu)點亮,按(an)(an)(an)設置(zhi)(zhi)鍵(jian)(jian),上部溫(wen)度(du)顯(xian)(xian)數(shu)(shu)(shu)出現(xian)“50”字樣(yang)(yang),下部小顯(xian)(xian)數(shu)(shu)(shu)出現(xian)跳(tiao)動(dong)(dong)。按(an)(an)(an)移動(dong)(dong)鍵(jian)(jian)。小顯(xian)(xian)數(shu)(shu)(shu)會(hui)逐個依次變(bian)(bian)換跳(tiao)動(dong)(dong)。按(an)(an)(an)“+”“-”按(an)(an)(an)鍵(jian)(jian)可以設定(ding)每(mei)個依次跳(tiao)動(dong)(dong)的顯(xian)(xian)數(shu)(shu)(shu),設置(zhi)(zhi)完畢。再(zai)按(an)(an)(an)設置(zhi)(zhi)鍵(jian)(jian),小顯(xian)(xian)數(shu)(shu)(shu)停止跳(tiao)動(dong)(dong),出現(xian)設置(zhi)(zhi)好的數(shu)(shu)(shu)值(zhi),設置(zhi)(zhi)被確(que)認。大(da)顯(xian)(xian)數(shu)(shu)(shu)窗顯(xian)(xian)示溫(wen)度(du)值(zhi)。隨著溫(wen)度(du)上升,大(da)顯(xian)(xian)數(shu)(shu)(shu)跟著變(bian)(bian)化(hua),儀器(qi)進行自動(dong)(dong)跟蹤和控制(zhi)(zhi)。當接(jie)近所設定(ding)值(zhi)前42℃時(shi)(shi)(shi),儀器(qi)自動(dong)(dong)轉入(ru)每(mei)分鐘5-6℃的升溫(wen)控制(zhi)(zhi)速率。在具體使用過程中,我(wo)們(men)應該時(shi)(shi)(shi)刻關(guan)注油煙(yan)(yan)生煙(yan)(yan)情況,當樣(yang)(yang)品(pin)出現(xian)少量煙(yan)(yan)霧時(shi)(shi)(shi),要(yao)(yao)借燈光計息(xi)查看發煙(yan)(yan)時(shi)(shi)(shi)的溫(wen)度(du),然后迅(xun)速按(an)(an)(an)鎖(suo)(suo)(suo)定(ding)鍵(jian)(jian)。有時(shi)(shi)(shi)候在樣(yang)(yang)品(pin)開(kai)始連(lian)續冒煙(yan)(yan)前,會(hui)噴出一(yi)點微弱(ruo)的煙(yan)(yan)霧,但(dan)這對測定(ding)結(jie)果(guo)并沒有影(ying)響(xiang)。當誤觀(guan)察(cha)時(shi)(shi)(shi),可再(zai)按(an)(an)(an)鎖(suo)(suo)(suo)定(ding)鍵(jian)(jian)介鎖(suo)(suo)(suo),儀器(qi)繼(ji)續升溫(wen),直(zhi)到明確(que)發煙(yan)(yan)判斷點時(shi)(shi)(shi),再(zai)按(an)(an)(an)鎖(suo)(suo)(suo)定(ding)鍵(jian)(jian),顯(xian)(xian)數(shu)(shu)(shu)會(hui)重新被鎖(suo)(suo)(suo)定(ding)。一(yi)般(ban)我(wo)們(men)在做實(shi)驗(yan)時(shi)(shi)(shi),會(hui)給設定(ding)溫(wen)度(du)值(zhi),如果(guo)過了(le)設定(ding)值(zhi)還沒有冒煙(yan)(yan),我(wo)們(men)只需繼(ji)續觀(guan)察(cha),直(zhi)到其(qi)冒煙(yan)(yan)為(wei)止,再(zai)進行溫(wen)度(du)記錄。但(dan)是(shi),注意(yi):雙試樣(yang)(yang)實(shi)驗(yan)中前后兩次允許(xu)誤差不能超過2℃,然后求(qiu)其(qi)平均數(shu)(shu)(shu)。否則要(yao)(yao)重新做實(shi)驗(yan)。
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