低溫液顯瀝青延伸儀；技術參數 

電源電壓：220±10% 50HZ±0.5HZ

控溫(wen)范圍(wei)：0-50±0.5℃

制冷功率(lv)：1.2KW

加熱功率：1.5KW

大延度：150㎝.200㎝

延伸速度：5 ㎝±0.25㎝/min 1㎝±0.05㎝/min

液晶(jing)顯示，自動計算(suan)3個(ge)試樣(yang)的平均值，內(nei)存試驗數據20組（分(fen)單速(su)、雙速(su)兩種）

 低溫液顯瀝青延伸儀；工作原理 

1.機(ji)(ji)械拉(la)伸裝(zhuang)置由低(di)速(su)(su)電機(ji)(ji)驅動,通過變速(su)(su)箱傳動齒輪齒條,使其從一端向(xiang)另(ling)一端移動.在傳動裝(zhuang)置上還設有變速(su)(su)機(ji)(ji)構,可以(yi)獲(huo)得50 mm/min和10 mm/min兩種不同(tong)的拉(la)伸速(su)(su)度.

2.溫(wen)度控制(zhi)裝(zhuang)置(zhi)由制(zhi)冷(leng)系統(壓縮機、冷(leng)凝器、風機等(deng))和加熱器、水(shui)(shui)泵(beng)、水(shui)(shui)箱等(deng)組(zu)成.通過水(shui)(shui)泵(beng)循(xun)環,使水(shui)(shui)槽內水(shui)(shui)溫(wen)在5-50℃恒溫(wen)可調(diao).

3.延度液晶顯(xian)示(shi)器能直接顯(xian)示(shi)三個試件的(de)延伸長度,并能自動計算、顯(xian)示(shi)三個試樣(yang)延度的(de)平均(jun)值.

 ；控制器操作(zuo)說(shuo)明

1. 溫(wen)(wen)度部分操作:接通電(dian)源,儀表上排顯示(shi)測量溫(wen)(wen)度值(zhi),即實際溫(wen)(wen)度。下排顯示(shi)設定溫(wen)(wen)度值(zhi)。

 儀表采用(yong)(yong)輕觸(chu)開(kai)關進(jin)(jin)行參(can)數設(she)定(ding)，面(mian)板(ban)上(shang)有四個鍵(jian)(jian)(jian)，SET 鍵(jian)(jian)(jian)用(yong)(yong)于(yu)進(jin)(jin)入(ru)溫(wen)度設(she)定(ding)狀態(tai)，p 、q 和t鍵(jian)(jian)(jian)用(yong)(yong)于(yu)修(xiu)改數據。按(an)SET鍵(jian)(jian)(jian)3秒，儀表上(shang)排顯示“SET”，進(jin)(jin)入(ru)設(she)定(ding)值(zhi)設(she)定(ding)狀態(tai)，下排顯示原設(she)定(ding)值(zhi)。此時便可對控制溫(wen)度進(jin)(jin)行設(she)定(ding)和修(xiu)改。每按(an)p鍵(jian)(jian)(jian)一次(ci)，閃爍的數字(zi)(zi)加1，當(dang)累加值(zhi)大于(yu)9時，自(zi)動(dong)進(jin)(jin)位1；每按(an)q鍵(jian)(jian)(jian)一次(ci)，閃爍的數字(zi)(zi)減1，當(dang)遞(di)減值(zhi)小(xiao)于(yu)0時，自(zi)動(dong)錯(cuo)位1；每按(an)t鍵(jian)(jian)(jian)一次(ci)，下排的閃爍數字(zi)(zi)左移一次(ci)。

2.計(ji)值部(bu)分(fen)操(cao)作(zuo)(zuo):開(kai)機(ji),液(ye)晶(jing)屏顯(xian)(xian)(xian)示名稱(cheng),延(yan)時(shi)4秒左右(you),顯(xian)(xian)(xian)示工作(zuo)(zuo)界面(mian),有時(shi)間、速度(du)(du)(du)、計(ji)值1、計(ji)值2、計(ji)值3及平(ping)均(jun)值。“循(xun)環”鍵(jian)為反(fan)復鍵(jian),按(an)一(yi)(yi)次(ci),水泵動(dong)(dong)(dong)作(zuo)(zuo),再按(an)一(yi)(yi)次(ci),水泵不動(dong)(dong)(dong)作(zuo)(zuo), 再按(an)一(yi)(yi)次(ci),水泵又動(dong)(dong)(dong)作(zuo)(zuo)。如(ru)(ru)此(ci)反(fan)復。試(shi)驗準備好后(hou),按(an)“試(shi)驗”鍵(jian),控制器輸出,使電(dian)機(ji)啟(qi)動(dong)(dong)(dong),開(kai)始拉伸試(shi)件(jian), 用眼觀察,當(dang)試(shi)件(jian)斷裂時(shi),按(an)“計(ji)值”鍵(jian)一(yi)(yi)下(xia)，以記錄長(chang)(chang)度(du)(du)(du)1，長(chang)(chang)度(du)(du)(du)2，長(chang)(chang)度(du)(du)(du)3。長(chang)(chang)度(du)(du)(du)3計(ji)完(wan)后(hou)，屏上顯(xian)(xian)(xian)示平(ping)均(jun)值。試(shi)驗完(wan)成，此(ci)時(shi)可按(an)“保存(cun)(cun)”鍵(jian)，保存(cun)(cun)此(ci)次(ci)試(shi)驗的時(shi)間、長(chang)(chang)度(du)(du)(du)1、2、3及平(ping)均(jun)值。低溫數顯(xian)(xian)(xian)瀝青(qing)延(yan)伸儀數據可保存(cun)(cun)20組，十(shi)年時(shi)間。如(ru)(ru)須進行下(xia)次(ci)試(shi)驗，按(an)“試(shi)驗”鍵(jian)開(kai)始新(xin)試(shi)驗。

查詢(xun)保(bao)存(cun)的(de)數(shu)(shu)據(ju)(ju)：按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)，屏(ping)上(shang)顯(xian)示查詢(xun)記(ji)(ji)錄，每按(an)(an)(an)(an)(an)(an)(an)“→”鍵(jian)(jian)(jian)(jian)(jian)一(yi)次，顯(xian)示一(yi)組新(xin)數(shu)(shu)據(ju)(ju)，按(an)(an)(an)(an)(an)(an)(an)試(shi)驗(yan)先后(hou)順序(xu)排列，20組數(shu)(shu)據(ju)(ju)循環顯(xian)示。如系統內無記(ji)(ji)錄，按(an)(an)(an)(an)(an)(an)(an)“→”鍵(jian)(jian)(jian)(jian)(jian)，顯(xian)示為00年00月00日(ri)00時(shi)00分(fen)，長度1，2，3都為00000。查到一(yi)組新(xin)數(shu)(shu)據(ju)(ju)后(hou)，按(an)(an)(an)(an)(an)(an)(an)“清零”鍵(jian)(jian)(jian)(jian)(jian)，刪除(chu)此(ci)組數(shu)(shu)據(ju)(ju)，一(yi)旦(dan)數(shu)(shu)據(ju)(ju)被(bei)刪除(chu)，數(shu)(shu)據(ju)(ju)將永遠無法(fa)找回，請謹(jin)慎使用“清零”鍵(jian)(jian)(jian)(jian)(jian)。在此(ci)界面(mian)(mian)下(xia)，按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)，進(jin)入[日(ri)期時(shi)間設(she)(she)(she)(she)定(ding)(ding)(ding)界面(mian)(mian)]。每次查詢(xun)數(shu)(shu)據(ju)(ju)后(hou)必須按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)，進(jin)入[日(ri)期時(shi)間設(she)(she)(she)(she)定(ding)(ding)(ding)界面(mian)(mian)]，再按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)進(jin)入實(shi)驗(yan)界面(mian)(mian)。日(ri)期時(shi)間設(she)(she)(she)(she)定(ding)(ding)(ding)：在實(shi)驗(yan)界面(mian)(mian)時(shi)，按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)，進(jin)入查詢(xun)記(ji)(ji)錄，再按(an)(an)(an)(an)(an)(an)(an)“設(she)(she)(she)(she)定(ding)(ding)(ding)”鍵(jian)(jian)(jian)(jian)(jian)進(jin)入[日(ri)期時(shi)間設(she)(she)(she)(she)定(ding)(ding)(ding)界面(mian)(mian)]。此(ci)時(shi)屏(ping)上(shang)出現(xian)一(yi)光標，按(an)(an)(an)(an)(an)(an)(an)“→”鍵(jian)(jian)(jian)(jian)(jian)和“←”鍵(jian)(jian)(jian)(jian)(jian)可移(yi)動光標，把光標移(yi)到須改(gai)(gai)動的(de)數(shu)(shu)字上(shang)，按(an)(an)(an)(an)(an)(an)(an)“+”鍵(jian)(jian)(jian)(jian)(jian)和“-”鍵(jian)(jian)(jian)(jian)(jian)，可加減數(shu)(shu)字，每改(gai)(gai)變一(yi)個數(shu)(shu)字后(hou)，須按(an)(an)(an)(an)(an)(an)(an)“保(bao)存(cun)”鍵(jian)(jian)(jian)(jian)(jian)保(bao)存(cun)，否(fou)則修改(gai)(gai)無效(xiao)。本系統時(shi)間為24小時(shi)格式，即(ji)下(xia)午4點(dian)10分(fen)應(ying)設(she)(she)(she)(she)為16點(dian)10分(fen)。

；注意事(shi)項 

(1) 儀器必須使用有良好接地保護的標準插座;

(2) 開機時(shi),為(wei)了保護壓縮機, 儀器(qi)設有延時(shi)保護裝(zhuang)置,不(bu)是故障;

(3) 儀器(qi)使用(yong)完(wan)畢,先關(guan)閉所(suo)有功(gong)能開關(guan),再關(guan)閉總電源開關(guan);

(4) 嚴(yan)禁水(shui)(shui)槽內無水(shui)(shui)時(shi)開啟制冷或加(jia)熱系統(tong);

(5) 水(shui)(shui)流循環(huan)發(fa)生異(yi)常(chang)(水(shui)(shui)管堵(du)塞或(huo)水(shui)(shui)泵堵(du)轉、聲音異(yi)常(chang)等不能(neng)正常(chang)工作情況)，則(ze)水(shui)(shui)槽內傳感器不能(neng)確切反映(ying)水(shui)(shui)箱(xiang)內溫度(du)，應立即切斷儀器電源，切不可繼續試驗，否則(ze)水(shui)(shui)箱(xiang)易破裂！！

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