2XZ真空泵操作須知 1.查看油位,以停泵時(shí)注油至油標(biāo)中心為宜。過低對(duì)排氣閥不能起油封作用,影響真空度。過高,可能會(huì)引起通大氣起動(dòng)時(shí)噴油。運(yùn)轉(zhuǎn)時(shí),油位有所升高,屬正,F(xiàn)象。油采 用規(guī)定牌號(hào)的清潔真空泵油,從加油孔加入。加油畢后,應(yīng)旋一上螺塞。油宜經(jīng)過濾,以免雜物進(jìn)入,堵塞油孔。 2.2XZ型旋片式真空泵可在通大氣或任何真空度下一次起動(dòng)。泵口如裝接電磁閥,應(yīng)與泵同時(shí)動(dòng)作。 3.環(huán)境溫度過高時(shí),油的溫度升高,粘度下降,飽和蒸汽壓會(huì)增大,會(huì)引起極限真空有所下降,特別是用熱偶計(jì)測(cè)得的全壓強(qiáng)。如加強(qiáng)通風(fēng)散熱,或改善泵油性能,極限真空可得到改善。 4.檢查2XZ型旋片式真空泵的極限真空以壓縮式水銀真空計(jì)為準(zhǔn),如計(jì)經(jīng)充分預(yù)抽校驗(yàn),泵溫達(dá)到穩(wěn)定,泵口與計(jì)直接接通,運(yùn)轉(zhuǎn)30分鐘內(nèi),將達(dá)到極限真空。總壓強(qiáng)計(jì)測(cè)得之值與泵油和真空計(jì)、規(guī)管誤差有關(guān),有時(shí)誤差甚至可很大,只能作參考。 5.如相對(duì)濕度較高,或被抽氣體含較多可凝性蒸汽,接通被抽容器后,宜打開氣鎮(zhèn)閥,運(yùn)轉(zhuǎn)20~40分鐘后關(guān)閉氣鎮(zhèn)閥。停泵前,可開氣鎮(zhèn)閥空載運(yùn)動(dòng)30分鐘,以延長(zhǎng)泵油壽命。 6.2XZ型旋片式真空泵用油選擇:泵油的粘度影響起動(dòng)功率和泵的極限真空,粘度高時(shí)對(duì)真空度有利,起動(dòng)功率則大一些。油在泵溫下的飽和蒸汽壓則會(huì)影響泵的極限總壓強(qiáng),越低越好。高速真空泵油和3#擴(kuò)散泵油的粘度較1號(hào)真空泵油大,飽和蒸汽壓較1號(hào)真空泵油低,但3#擴(kuò)散泵油價(jià)格較高。具體選什么油,可根據(jù)上述介紹結(jié)合具體使用要求來(lái)選擇。 1一般情況下,凡希望總壓強(qiáng)在6X10-2帕以上的應(yīng)用上海產(chǎn)的高速真空泵油。4升/秒以下小泵也可用1號(hào)真空油泵代,8升/秒以上直聯(lián)泵可用3#擴(kuò)散泵油代。 2如果對(duì)真空度要求不高,且油的污染更換頻繁,真空泵油供應(yīng)困難,可采用50號(hào)機(jī)械油代替。 3如果環(huán)境溫度低,起動(dòng)困難,極限真空要求不高,可采用粘度較上略低的真宅泵油或機(jī)械油。 旋片式真空泵性能參數(shù) 型號(hào) 2XZ-0.25真空泵 2XZ-0.5真空泵 2XZ-1真空泵 2XZ-2真空泵 2XZ-4真空泵 2XZ-8真空泵
產(chǎn)品名稱:HK-227 可程式恒溫恒濕試驗(yàn)機(jī) 品牌:華凱 型號(hào):HK-227 用途:塑膠/五金類檢測(cè) | ||||||||||||||||||||
本機(jī)模擬各種環(huán)境狀態(tài),試驗(yàn)各種產(chǎn)品及原材料耐熱、耐潮濕、耐干、耐低溫的性能。適用于造紙、印刷、電子、電器、金屬等各行業(yè)。 產(chǎn)品規(guī)格:
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A, the door installation: 1, the door assembly connection, should be strict, level off, without black seam; Fixed parts should lock; Within 2 meters door cover diagonal should be accurate, allow the tolerance of 1 mm or less, more than 2 meters allow 1.5 mm or less; 2, door sets, should be vertical, three-dimensional horizontal straightness tolerance + 2 mm, horizontal straightness tolerance allowed + 1 mm; Gap between the door and the wall with foamed double-sided sealing glue, plastic foam should be painted, dry cutting is flat and level. Second, the set of installation: 1, line installation should be uniform coating and door cover, wall body is fixed, set the line outlet should level off, close, no crack, installed on the same side of line in a plane; Because wall is at ordinary times, must ensure that the set of flat line interface. Set of camber line allowed tolerance of 1 mm. Set of line with walling crack sealant caulking processing. Three, door leaf installation: 1, the door leaf after installation, should level off, vertical, doors and door cover exposed faces flat; Doors open the same ring, switch freely; 2, gap between the door and the door leaf, the seam for 6 to 8 mm, the rest of the trilateral to 3 mm; All gap tolerance + 0.5 mm; Article 3, after the doors locked and sealed tightly bound, and does not wobble. 4, hardware: 1, the door hinge should be vertical and flat; The flat hinge should be on doors and door cover corresponding to the slot, the slot should be specifications, size the same as the hinge, the trilateral allowable tolerance + 0.5, after fit up flat without aperture, should be flexible hinge open freely. Trigeminal hinge according to the mold installation, bolt should be put in place. Hinge fixed screws should be packed full, straight, hidden in the hinge plane. 2, lock slot should be accurate, specifications, size is consistent with the lock body, lock plate; Door locks installed should be tightened, the lock is ringing; Accessories installation is complete, the fixed screw shall be entirely flat. 3, suck, door closer, handle, etc shall be installed in the specified location, installation is firm, fixed bolts shall be installed, straight, installed after the fitting effect is good. Five, the appearance: 1, cover, door line combined with ground gap should be less than 3 mm, with waterproof sealant sealing slit. 2 has grown two millimeters, the door is installed, must be smooth uniform, open and flexible, the overall effect is good, no scratches.
網(wǎng)址:http://www.lcscmy.com/
紫外耐氣候試驗(yàn)箱
工作室尺寸: 450×1170×500(D×W×H)(mm) 內(nèi)膽材料:BUS304B不銹鋼板 外膽材料:鋼板靜電噴塑
熒光燈型號(hào):UV-B 數(shù)量:8支 試樣架:框式基架和襯墊板由不銹鋼制成 溫控儀:日本原裝數(shù)顯溫度控制儀工作室尺寸: 450×1170×500(D×W×H)(mm)
相關(guān)產(chǎn)品鏈接:
鹽霧箱 PVC鹽霧試驗(yàn)箱 高低溫試驗(yàn)箱 高低溫試驗(yàn)箱A型 高低溫濕熱試驗(yàn)箱 高低溫濕熱試驗(yàn)箱A型 可程式高低溫濕熱試驗(yàn)箱 高低溫交變濕熱試驗(yàn)箱A型 可程式恒溫恒濕試驗(yàn)箱 恒溫恒濕試驗(yàn)箱A型 振動(dòng)試驗(yàn)臺(tái) 振動(dòng)試驗(yàn)臺(tái) 跌落試驗(yàn)臺(tái) 跌落試驗(yàn)臺(tái) 氙燈老化試驗(yàn)箱 氙燈耐氣候試驗(yàn)箱 紫外耐氣候箱 紫外耐氣候試驗(yàn)箱 高低溫沖擊試驗(yàn)箱 高低溫沖擊試驗(yàn)箱 大型步入式試驗(yàn)室 步入式環(huán)境試驗(yàn)室 箱式淋雨試驗(yàn)箱 箱式淋雨試驗(yàn)箱 擺桿淋雨試驗(yàn)箱 擺桿淋雨試驗(yàn)箱 沙塵試驗(yàn)箱 沙塵試驗(yàn)箱 高溫老化試驗(yàn)箱 高溫老化試驗(yàn)箱 大型步入式高溫老化試驗(yàn)箱 步入式高溫老化試驗(yàn)箱
反應(yīng)類型
該儀器能催化完成加成、取代、酯化、水解、烷(酰)基化、聚合、縮合、環(huán)合和氧化等許多類型的有機(jī)、藥物和生物化學(xué)反應(yīng)及食品、天然產(chǎn)物和礦物的溶劑萃取等物理過程。
適用范圍
適用于有機(jī)合成化學(xué)、藥物化學(xué)、食品科學(xué)、無(wú)機(jī)化學(xué)、石油化工、材料科學(xué)、生物醫(yī)學(xué)等相關(guān)領(lǐng)域。該儀器在上述領(lǐng)域中具有重要的應(yīng)用價(jià)值,通過焓效應(yīng)和熵效應(yīng)誘導(dǎo)或加速化學(xué)反應(yīng)和物理過程,使反應(yīng)速度比常規(guī)方法加快數(shù)百倍甚至數(shù)千倍,同時(shí)提高反應(yīng)選擇性和收率,使過去許多難以發(fā)生或速度很慢的化學(xué)反應(yīng)或物理過程變得容易實(shí)現(xiàn)和高速完成。儀器操作簡(jiǎn)單,通過反應(yīng)視窗可以直接觀察反應(yīng)進(jìn)展,對(duì)實(shí)驗(yàn)過程進(jìn)行全程監(jiān)控,適合科研及本科教學(xué)使用。
技術(shù)參數(shù)
★1、功率:100~900W,9檔功率手動(dòng)可調(diào);
★2、測(cè)溫和控溫范圍:0~300℃;
★3、測(cè)溫精度:2‰;控溫精度±1℃;
★4、不銹鋼腔體,耐高溫,易清理;
★5、反應(yīng)容積:10~1000mL;
★6、數(shù)碼管顯示予置溫度,當(dāng)前溫度,反應(yīng)時(shí)間;
7、提供不同速度的磁力攪拌,使反應(yīng)更加充分,溫度更加均勻;
8、高精度高屏蔽接觸式溫度傳感器,實(shí)時(shí)監(jiān)測(cè)反應(yīng)溫度,耐腐蝕四氟鍍層;
9、開放式反應(yīng)體系,可安裝滴液漏斗和冷凝管等進(jìn)行回流反應(yīng)。
10、微波泄漏優(yōu)于國(guó)家標(biāo)準(zhǔn)。