mso-hansi-font-family:"Times New Roman"">一、主要特點：

1、LYY-7A mso-hansi-font-family:"Times New Roman"">瀝青延伸度儀是我公司為了適應(yīng)現(xiàn)代公路儀器發(fā)展最新研發(fā)得低成本的優(yōu)質(zhì)瀝青延伸度儀。

2、制冷系統(tǒng)采用進口組件，設(shè)有循環(huán)系統(tǒng)，溫度穩(wěn)定。

3、優(yōu)質(zhì)不銹鋼底板，配有透明槽蓋。

4、拉伸系統(tǒng)采用滾珠絲桿和直線導(dǎo)軌，拉伸平穩(wěn)。

5、拉伸速度由變頻器無級調(diào)速，自動高速歸位，省時帶剎車系統(tǒng)。

6、屏上自動顯示伸長量，計算平均值。

7、自動記錄試驗起始時間，試驗時間。

mso-hansi-font-family:"Times New Roman"">二、瀝青延伸儀適用范圍：

mso-hansi-font-family:"Times New Roman"">符GB/T4508 "Times New Roman"">、JTJ/T0606 "Times New Roman"">、JTJ/T0662 "Times New Roman"">、ASTM D 113

mso-hansi-font-family:"Times New Roman"">適用于測定瀝青延度，也適用于測試改性瀝青的彈性恢復(fù)試驗。

mso-hansi-font-family:"Times New Roman"">三、主要技術(shù)參數(shù)：

1、拉伸長度：1.5m mso-hansi-font-family:"Times New Roman"">；? 2m（精度：1mm mso-hansi-font-family:"Times New Roman"">）

2、控溫范圍：－5 mso-hansi-font-family:"Times New Roman"">～80℃ （精度：±0.1℃ "Times New Roman"">）

3、拉伸速度：10mm/Min；? 50mm/Min

4、制冷功率：1.2KW mso-hansi-font-family:"Times New Roman"">；? 加熱功率：2kw

5、外形尺寸：2700×800×1100mm（2m mso-hansi-font-family:"Times New Roman"">）；? 2300×800×1100mm（1.5m mso-hansi-font-family:"Times New Roman"">）

6、重量：300kg

7、電源電壓：220v

8、功率：3kw

9、環(huán)境溫度：5 mso-hansi-font-family:"Times New Roman"">～40℃

10、環(huán)境濕度：≦85%

mso-hansi-font-family:"Times New Roman"">四、瀝青延伸儀主要結(jié)構(gòu)：

mso-hansi-font-family:"Times New Roman"">本儀器主要由機械拉伸裝置、溫度控制裝置和液晶顯示器部分組成。

mso-hansi-font-family:"Times New Roman"">五、工作原理：

1、機械拉伸裝置由低速電機驅(qū)動, mso-hansi-font-family:"Times New Roman"">通過變速箱傳動齒輪齒條, "Times New Roman"">使其從一端向另一端移動. "Times New Roman"">在傳動裝置上還設(shè)有變速機構(gòu), "Times New Roman"">可以獲得50 mm/min "Times New Roman"">和10 mm/min "Times New Roman"">兩種不同的拉伸速度.

2、溫度控制裝置由制冷系統(tǒng)( mso-hansi-font-family:"Times New Roman"">壓縮機、冷凝器、風(fēng)機等) "Times New Roman"">和加熱器、水泵、水箱等組成. "Times New Roman"">通過水泵循環(huán), "Times New Roman"">使水槽內(nèi)水溫在5-50℃恒溫可調(diào).

3、延度液晶顯示器能直接顯示三個試件的延伸長度, mso-hansi-font-family:"Times New Roman"">并能自動計算、顯示三個試樣延度的平均值.

mso-hansi-font-family:"Times New Roman"">六、瀝青延伸儀使用說明：

mso-hansi-font-family:"Times New Roman"">（一）控制器操作說明

1、溫度部分操作：

mso-hansi-font-family:"Times New Roman"">接通電源, "Times New Roman"">儀表上排顯示測量溫度值, "Times New Roman"">即實際溫度。下排顯示設(shè)定溫度值。

mso-hansi-font-family:"Times New Roman"">儀表采用輕觸開關(guān)進行參數(shù)設(shè)定，面板上有四個鍵，SET mso-hansi-font-family:"Times New Roman"">鍵用于進入溫度設(shè)定狀態(tài)，p "Times New Roman"">、q 和t mso-hansi-font-family:"Times New Roman"">鍵用于修改數(shù)據(jù)。

mso-hansi-font-family:"Times New Roman"">按SET "Times New Roman"">鍵3秒，儀表上排顯示“SET” mso-hansi-font-family:"Times New Roman"">，進入設(shè)定值設(shè)定狀態(tài)，下排顯示原設(shè)定值。此時便可對控制溫度進行設(shè)定和修改。

mso-hansi-font-family:"Times New Roman"">每按p "Times New Roman"">鍵一次，閃爍的數(shù)字加1 "Times New Roman"">，當(dāng)累加值大于9 "Times New Roman"">時，自動進位1 "Times New Roman"">；

mso-hansi-font-family:"Times New Roman"">每按q "Times New Roman"">鍵一次，閃爍的數(shù)字減1 "Times New Roman"">，當(dāng)遞減值小于0 "Times New Roman"">時，自動錯位1 "Times New Roman"">；

mso-hansi-font-family:"Times New Roman"">每按t "Times New Roman"">鍵一次，下排的閃爍數(shù)字左移一次。

2、計值部分操作：

mso-hansi-font-family:"Times New Roman"">開機, "Times New Roman"">液晶屏顯示名稱, "Times New Roman"">延時4秒左右, mso-hansi-font-family:"Times New Roman"">顯示工作界面, "Times New Roman"">有時間、速度、計值1 "Times New Roman"">、計值2、計值3 mso-hansi-font-family:"Times New Roman"">及平均值。

“循環(huán)” mso-hansi-font-family:"Times New Roman"">鍵為反復(fù)鍵, "Times New Roman"">按一次,水泵動作, mso-hansi-font-family:"Times New Roman"">再按一次, "Times New Roman"">水泵不動作, "Times New Roman"">再按一次,水泵又動作。如此反復(fù)。

mso-hansi-font-family:"Times New Roman"">試驗準(zhǔn)備好后, "Times New Roman"">按“試驗” mso-hansi-font-family:"Times New Roman"">鍵, "Times New Roman"">控制器輸出,使電機啟動, mso-hansi-font-family:"Times New Roman"">開始拉伸試件, "Times New Roman"">用眼觀察,當(dāng)試件斷裂時, mso-hansi-font-family:"Times New Roman"">按“ "Times New Roman"">計值”鍵一下，以記錄長度1 mso-hansi-font-family:"Times New Roman"">，長度2 "Times New Roman"">，長度3。長度3 mso-hansi-font-family:"Times New Roman"">計完后，屏上顯示平均值。試驗完成，此時可按“ mso-hansi-font-family:"Times New Roman"">保存” "Times New Roman"">鍵，保存此次試驗的時間、長度1 "Times New Roman"">、2、3 mso-hansi-font-family:"Times New Roman"">及平均值。低溫數(shù)顯瀝青延伸儀數(shù)據(jù)可保存20 mso-hansi-font-family:"Times New Roman"">組，十年時間。如須進行下次試驗，按“ mso-hansi-font-family:"Times New Roman"">試驗” "Times New Roman"">鍵開始新試驗。

mso-hansi-font-family:"Times New Roman"">查詢保存的數(shù)據(jù)：

mso-hansi-font-family:"Times New Roman"">按“ "Times New Roman"">設(shè)定”鍵，屏上顯示查詢記錄，每按“→” mso-hansi-font-family:"Times New Roman"">鍵一次，顯示一組新數(shù)據(jù)，按試驗先后順序排列，20 mso-hansi-font-family:"Times New Roman"">組數(shù)據(jù)循環(huán)顯示。如系統(tǒng)內(nèi)無記錄，按“→” mso-hansi-font-family:"Times New Roman"">鍵，顯示為00 "Times New Roman"">年00月00 mso-hansi-font-family:"Times New Roman"">日00 "Times New Roman"">時00分，長度1 mso-hansi-font-family:"Times New Roman"">，2 "Times New Roman"">，3都為00000 mso-hansi-font-family:"Times New Roman"">。

mso-hansi-font-family:"Times New Roman"">查到一組新數(shù)據(jù)后，按“ "Times New Roman"">清零”鍵，刪除此組數(shù)據(jù)，一旦數(shù)據(jù)被刪除，數(shù)據(jù)將永遠(yuǎn)無法找回，請謹(jǐn)慎使用“ mso-hansi-font-family:"Times New Roman"">清零” "Times New Roman"">鍵。

mso-hansi-font-family:"Times New Roman"">在此界面下，按“ "Times New Roman"">設(shè)定”鍵，進入[ mso-hansi-font-family:"Times New Roman"">日期時間設(shè)定界面] "Times New Roman"">。每次查詢數(shù)據(jù)后必須按“ "Times New Roman"">設(shè)定”鍵，進入[ mso-hansi-font-family:"Times New Roman"">日期時間設(shè)定界面] "Times New Roman"">，再按“設(shè)定” mso-hansi-font-family:"Times New Roman"">鍵進入實驗界面。

mso-hansi-font-family:"Times New Roman"">日期時間設(shè)定：

mso-hansi-font-family:"Times New Roman"">在實驗界面時，按“ "Times New Roman"">設(shè)定”鍵，進入查詢記錄，再按“ mso-hansi-font-family:"Times New Roman"">設(shè)定” "Times New Roman"">鍵進入[日期時間設(shè)定界面] mso-hansi-font-family:"Times New Roman"">。此時屏上出現(xiàn)一光標(biāo)，按“→” "Times New Roman"">鍵和“←”鍵可移動光標(biāo)，把光標(biāo)移到須改動的數(shù)字上，按“+” mso-hansi-font-family:"Times New Roman"">鍵和“-” "Times New Roman"">鍵，可加減數(shù)字，每改變一個數(shù)字后，須按“ "Times New Roman"">保存”鍵保存，否則修改無效。本系統(tǒng)時間為24 mso-hansi-font-family:"Times New Roman"">小時格式，即下午4 "Times New Roman"">點10分應(yīng)設(shè)為16 mso-hansi-font-family:"Times New Roman"">點10 "Times New Roman"">分。

mso-hansi-font-family:"Times New Roman"">在此界面下，按“ "Times New Roman"">設(shè)定”鍵可進入實驗界面。

(二) mso-hansi-font-family:"Times New Roman"">準(zhǔn)備工作

1、將隔離劑拌和均勻, mso-hansi-font-family:"Times New Roman"">涂于清潔干燥的試模底板和兩個側(cè)模的內(nèi)表面, mso-hansi-font-family:"Times New Roman"">再將試模拼成8 "Times New Roman"">字形狀放在試模底板上;

2、將準(zhǔn)備好的試樣自試模的一端至另一端往返數(shù)次注入試模中, mso-hansi-font-family:"Times New Roman"">并略高于試模表面, "Times New Roman"">此過程中注意勿使氣泡混入;

3、試件在室溫中冷卻30 mso-hansi-font-family:"Times New Roman"">分鐘后, "Times New Roman"">置于規(guī)定試驗溫度的水浴中30 "Times New Roman"">分鐘后取出,用熱刮刀將高出試模的部分刮平, mso-hansi-font-family:"Times New Roman"">使瀝青表面與試模表面平齊. "Times New Roman"">然后將試模連此底板再浸入規(guī)定試驗溫度的水浴中1-2 "Times New Roman"">小時.

(三) mso-hansi-font-family:"Times New Roman"">試驗步驟

1、本儀器應(yīng)水平置于室溫0-40℃ "Times New Roman"">、相對濕度不大于80% "Times New Roman"">、無震動,無腐蝕性氣體的地面上, mso-hansi-font-family:"Times New Roman"">并應(yīng)有良好的接地保護.

2、向水槽中注水, mso-hansi-font-family:"Times New Roman"">水位應(yīng)符合試驗操作規(guī)程要求.

3、接通電源, mso-hansi-font-family:"Times New Roman"">檢查儀器正常后, "Times New Roman"">設(shè)定試驗規(guī)定所需的溫度, "Times New Roman"">啟動制冷或加熱系統(tǒng), "Times New Roman"">同時按“循環(huán)” mso-hansi-font-family:"Times New Roman"">鍵水泵工作, "Times New Roman"">到設(shè)定溫度后系統(tǒng)會自動停止工作.