技術(shù)參數(shù)
儀器名稱 | DHR-1 |
止推軸承 | 磁懸浮 |
徑向軸承 | 多孔碳 |
馬達(dá)設(shè)計(jì) | 拖杯馬達(dá) |
動態(tài)最小扭矩(nN.m) | 10 |
穩(wěn)態(tài)最小扭矩(nN.m) | 20 |
最大扭矩(mN.m) | 150 |
扭矩分辨率(nN.m) | 0.1 |
最小頻率(Hz) | 1.00E-07 |
最大頻率(Hz) | 100 |
最小角速率(rad/s) | 0 |
最大角速率(rad/s) | 300 |
位移傳感器 | 光學(xué)編碼器 |
雙讀取頭光學(xué)編碼器 | N/A |
位移分辨率(nrad) | 10 |
步階應(yīng)變響應(yīng)時間(ms) | 15 |
步階速率響應(yīng)時間(ms) | 5 |
法向/軸向力傳感器 | FRT |
最大法向力(N) | 50 |
法向力靈敏度(N) | 0.01 |
法向力分辨率(mN) | 1 |
新一代應(yīng)變測量技術(shù)-雙讀取頭的光學(xué)編碼器
DHR系列流變儀都配備了光學(xué)編碼器,可以進(jìn)行高分辨率角位移的流變測試。其中,DHR-3的光學(xué)編碼器具有雙讀取頭。這項(xiàng)新技術(shù)提供了2nrad的超高位移分辨率,見笑了造影,提高了角位移的測量精度。其中一大優(yōu)勢是數(shù)據(jù)更為優(yōu)化,靈敏度更高,能夠在更寬的甚至是極端條件下測試具有挑戰(zhàn)性的樣品。
第二代磁懸浮軸承技術(shù)-止推軸承
DHR是全球位移采用了磁懸浮軸承的商業(yè)流變儀。經(jīng)過改良的第二代詞組安撫軸承具有更有意義的低端扭矩性能和旋轉(zhuǎn)映射穩(wěn)定性。任何流變儀的低端扭矩性能都取決于軸承摩擦導(dǎo)致的殘余扭矩的大小。DHR磁懸浮軸承的間隙是空氣軸承的250倍,不存在因?yàn)閴嚎s氣流產(chǎn)生的阻滯。磁懸浮軸承減少了70%的摩擦,DHR的輸出扭矩精度高達(dá)0.5nN.m。而且,磁懸浮軸承具有不易變形和不易污染的優(yōu)點(diǎn)。
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德仕達(dá)塑膠材料公司PVDF聚偏氟乙烯,外觀為半透明或白色粉體或顆粒,分子鏈間排列緊密,又有較強(qiáng)的氫鍵,含氧指數(shù)為46%,不燃,結(jié)晶度65%~78%,密度為1.17~1.79g/cm3,熔點(diǎn)為172℃,熱變形溫度112~145℃,使用溫度為-40~150℃。PVDF是由純度≥99.99%的偏氟乙烯(VDF)均聚而成的涂料用PVDF可熔性氟碳樹脂。有70%PVDF樹脂制成的氟碳涂料經(jīng)噴涂或輥涂等工藝經(jīng)烘烤制成的漆膜具有無與倫比的超耐候性能及加工性能。PVDF不但有很強(qiáng)的耐磨性和抗沖擊性能,而且在極端嚴(yán)酷與惡劣的環(huán)境中有很高的抗褪色性與抗紫外線性能。 PVDF是目前含氟塑料中產(chǎn)量名列第二位的大產(chǎn)品主營PTFE{又名,聚四氟乙烯,鐵氟龍,特富龍,F4,四氟}棒材,板材。規(guī)格齊全,質(zhì)量,價格合理,歡迎來電咨詢
rubber insulated cables(wires) of rated voltages up to and including 450/750v | ||||||||||||||||
產(chǎn)品標(biāo)準(zhǔn)standard 本產(chǎn)品按gb5013-1997《額定電壓450/750v及以下橡皮絕緣電纜》、jb8735-1998《額定電壓450/750v及以下橡皮絕緣軟線和軟電纜》及q/320282dce036-2003標(biāo)準(zhǔn)生產(chǎn),同時還可根據(jù)用戶需要按國際電工委員會推薦標(biāo)準(zhǔn)iec、英國標(biāo)準(zhǔn)、德國標(biāo)準(zhǔn)及美國標(biāo)準(zhǔn)生產(chǎn)。the product is manufactured according to the standard 《rubber insulated cables of rated voltages up to and including450/750v》of gb5013-1997,《rubber insulated cords and flexible cables of rated voltages up to and including450/750v》of jb8735-1998,and q/320282dce036-2003,and the same time is also manufactured according to the standard of iec、english、germany and america.適用范圍applications橡皮絕緣電線(電纜)適用于工頻額定電壓u0/u450/750v及以下動力裝置用移動敷設(shè)的電線電纜。rubber insulated wires and cables of suitable for power device with moving installation and rated voltage up and including 450/750v.使用特性operating characteristics工頻額定電壓u0/u為450/750v、300/500v、300/300v。rated power-frepuency voltage u0/u:450/750vand300/500vand300/300v.電纜導(dǎo)體的允許工作溫度:60℃。max.admissible operating temperature of the conductor:60℃.電纜允許的工作環(huán)境溫度為-35℃。permissibie long-term operating temperature:lowest working temperature is-35℃.yqw,yzw,245iec57,ycw,245iec66,245iec82,yhf電纜可在受礦物油和燃料油污染場合使用。cables can be used at placescontaminated by mineral oil and fuel oil.電纜彎曲半徑:the bending radius of cabled≤25mm:≥4dd>25mm:≥6d(d-diameter of the cable)電纜的型號type of cable | ||||||||||||||||
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生產(chǎn)范圍production range of cable | ||||||||||||||||
注:“★”的產(chǎn)品按jb8735.2-1998標(biāo)準(zhǔn)生產(chǎn)!啊觥钡漠a(chǎn)品按q/320282dce-2003標(biāo)準(zhǔn)生產(chǎn)。其余按產(chǎn)品gb5013-1997標(biāo)準(zhǔn)生產(chǎn)。note:“★”indicates that the product is manufactured according to thestandard of jb8735-1998“■”indicates that the product is manufactured according to the standard of q320282dce036-2003.the rest product is manufactured according to the standard pf gb5013-1997. 結(jié)構(gòu)尺寸及主要技術(shù)參數(shù)construction and main technical data | ||||||||||||||||
額定電壓450/750v及以下橡皮絕緣電纜rubber insulated cables of rated voltages up to and including 450/750型號(type):yc,245iec66,ycw 額定電壓(rating voltage):450/750v | ||||||||||||||||
額定電壓450/750v及以下橡皮絕緣電纜rubber insulated cables of rabed voltage up to and including 450/750v型號(type ) :yc,245iec66,ycw 額定電壓(rating voltage):450/750v | ||||||||||||||||
額定電壓450/750v及以下橡皮絕緣電纜rubber insulated cables of rabed voltage up to and including 450/750v型號(type ) :yc,245iec66,ycw 額定電壓(rating voltage):450/750v | ||||||||||||||||
電焊機(jī)電纜arc welding cables 型號(type):245iec81(yh),245iec82(yhf) | ||||||||||||||||
特點(diǎn): characteristic1. 特別柔軟,具有良好的彎曲性能。2. 護(hù)套材料采用天然橡膠或氯丁橡膠混合物,可以適用于各種不同場合,電氣、物理機(jī)械性能好。3. 氯丁橡膠混合物護(hù)套具有耐熱、耐油和不延然性能。4. 電纜的最大連續(xù)工作溫度為65℃。1. the cable has high flexibility properties.2. the sheath shall be a natural rubber compound or a chloroprene rubber compound .so that it is applicable to different working conditions .and the cable has the outstanding electrical properties and excellent mechanical properties.3. the chloroprene rubber sheath is heat and oil resistant and flame retardant.5. the permissible continuous operating temperature 65℃。 | ||||||||||||||||
額定電壓450/750v及以下橡皮絕緣電纜(電線)rubber insulated cables (wires) of rated voltage up to and including 450/750v | ||||||||||||||||
不同環(huán)境溫度的載流量修正系數(shù)current rating factors for variation in ambient air temperature | ||||||||||||||||
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