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HD-3783石油蠟針入度測定儀

概述

石(shi)油蠟(la)針入度(du)測(ce)(ce)定儀(yi)是(shi)依據國家標準GB/T4985《石(shi)油蠟(la)針入度(du)測(ce)(ce)定法》設(she)計、制造的(de)。適用于針入度(du)值不(bu)大于250的(de)石(shi)油蠟(la)針入度(du)的(de)測(ce)(ce)定。

HD-3783石油蠟針入度測定儀

技術參(can)數

1、電源：AC220V±10%50Hz

2、輸入(ru)功(gong)率：1000W

3、控溫范圍(wei)：25～55℃

4、控溫(wen)精度(du)：0.1℃

5、計時范圍：0.01~99.99S

6、延時控(kong)制精(jing)度：≤0.3%±0.05S

結構與原(yuan)理

儀(yi)(yi)器(qi)(qi)(qi)由(you)(you)針(zhen)(zhen)入(ru)(ru)(ru)(ru)度儀(yi)(yi)、水(shui)浴槽、制(zhi)冷(leng)(leng)機組成。針(zhen)(zhen)入(ru)(ru)(ru)(ru)度儀(yi)(yi)配有時(shi)(shi)間控(kong)制(zhi)裝置(zhi)和(he)數(shu)顯(xian)(xian)針(zhen)(zhen)入(ru)(ru)(ru)(ru)度表(biao)。時(shi)(shi)間控(kong)制(zhi)裝置(zhi)采(cai)用數(shu)字顯(xian)(xian)示，數(shu)顯(xian)(xian)針(zhen)(zhen)入(ru)(ru)(ru)(ru)度表(biao)使用方便(bian)準(zhun)確，zui大可測(ce)針(zhen)(zhen)入(ru)(ru)(ru)(ru)度值不小于620，能適應各項(xiang)實(shi)驗要(yao)求。支架(jia)移動(dong)(dong)有粗動(dong)(dong)和(he)微動(dong)(dong)兩種速度，便(bian)于測(ce)試時(shi)(shi)針(zhen)(zhen)尖(jian)易于對準(zhun)試樣(yang)表(biao)面，針(zhen)(zhen)入(ru)(ru)(ru)(ru)度儀(yi)(yi)具有調(diao)平機構，可方便(bian)地將儀(yi)(yi)器(qi)(qi)(qi)平臺(tai)調(diao)成水(shui)平面。儀(yi)(yi)器(qi)(qi)(qi)滑桿下落(luo)時(shi)(shi)間由(you)(you)電磁鐵控(kong)制(zhi)，準(zhun)確可靠。制(zhi)冷(leng)(leng)機采(cai)用單機制(zhi)冷(leng)(leng)方式，氟利昂制(zhi)冷(leng)(leng)劑通(tong)過蒸發(fa)器(qi)(qi)(qi)吸(xi)熱膨脹(zhang)，膨脹(zhang)后(hou)(hou)的氣體由(you)(you)壓(ya)(ya)(ya)縮(suo)機壓(ya)(ya)(ya)入(ru)(ru)(ru)(ru)排氣管形(xing)成高溫(wen)(wen)高壓(ya)(ya)(ya)氣體，再進入(ru)(ru)(ru)(ru)冷(leng)(leng)凝器(qi)(qi)(qi)冷(leng)(leng)卻成液體，然(ran)后(hou)(hou)經節(jie)流降(jiang)壓(ya)(ya)(ya)進入(ru)(ru)(ru)(ru)蒸發(fa)器(qi)(qi)(qi)蒸發(fa)吸(xi)熱，從而達到制(zhi)冷(leng)(leng)的目(mu)的，制(zhi)冷(leng)(leng)劑再蒸發(fa)后(hou)(hou)又(you)被(bei)壓(ya)(ya)(ya)縮(suo)機壓(ya)(ya)(ya)入(ru)(ru)(ru)(ru)排氣管并(bing)進入(ru)(ru)(ru)(ru)冷(leng)(leng)凝器(qi)(qi)(qi)重復循環連續制(zhi)冷(leng)(leng)。儀(yi)(yi)器(qi)(qi)(qi)浴溫(wen)(wen)采(cai)用數(shu)字溫(wen)(wen)控(kong)表(biao)控(kong)制(zhi)并(bing)顯(xian)(xian)示，讀(du)數(shu)清晰直觀，當浴槽內(nei)的溫(wen)(wen)度低于溫(wen)(wen)控(kong)表(biao)所設定溫(wen)(wen)度時(shi)(shi)，溫(wen)(wen)控(kong)表(biao)自(zi)動(dong)(dong)輸(shu)出信號，通(tong)過固態繼電器(qi)(qi)(qi)帶動(dong)(dong)加(jia)熱器(qi)(qi)(qi)工作，達到恒溫(wen)(wen)目(mu)的。整(zheng)臺(tai)儀(yi)(yi)器(qi)(qi)(qi)造型美觀，運行可靠，操作方便(bian)。