主要技術(shù)參數(shù) | 熱電阻類型 | 測溫范圍℃ | 分度號 | 允許偏差△t℃ | wzp型鉑電阻 | -200~420 | Pt100 | B級(-200~800℃)允差±(0.30+0.005/t/) | *(-200~650 ℃ ) 允差±(0.15+0.002/t/) | WZC型銅電阻 | -150~100 | Cu50 | -50~100℃允差 | | | | | | | 工作原理 | 熱電阻是利用物質(zhì)在溫度變化時本身電阻也隨著發(fā)生變化的特性來測量溫度的。熱電阻的受熱部分(感溫元件)是用細(xì)金屬絲均勻地雙繞在絕緣材料制成的骨架上,當(dāng)被測介質(zhì)中有溫度梯度存在時,所測得的溫度是感溫元件所在范圍內(nèi)介質(zhì)層中的平均溫度. | 特 點 | 全國統(tǒng)一設(shè)計產(chǎn)品,接口尺寸通用,互換性好; | 采用裝配式結(jié)構(gòu),零件分解性好,維修方便; | 更換易損件成本低; | 規(guī)格齊全,性能穩(wěn)定可靠。 | 絕緣電阻 | 裝配鉑熱電阻的常溫絕緣電阻應(yīng)不小于100MΩ | 裝配銅熱電阻的常溫絕緣電阻應(yīng)不小于50MΩ | 常溫絕緣電阻的試驗電壓為10~100V DC。 | 自熱影響:鉑電阻允許通過的zui大電流為5mA,由此產(chǎn)生的溫升不大于0.3℃。 | 熱響應(yīng)時間:在溫度出現(xiàn)階躍變化時,熱電阻的輸出變化至相當(dāng)于該階躍變化的50%,所需要的時間,稱為熱響應(yīng)時間,用τ0.5表示。 | 熱電阻時間常數(shù) | 熱惰性級別 | 時間常數(shù)(秒) | 熱惰性級別 | 時間常數(shù)(秒) | Ⅰ | 90-180 | Ⅲ | 10-30 | Ⅱ | 30-90 | Ⅳ | 10 | | | 熱電阻的公稱壓力:一般是指在工作溫度下保護(hù)管所能承受的靜態(tài)外壓而不破裂。 | 熱電阻zui小插入深度:應(yīng)不小于其保護(hù)套管外徑的8-10倍。 | 絕緣電阻:當(dāng)周圍空氣溫度為15-35℃,相對濕度<80%時,絕緣電阻 20兆歐(電壓100V) | 。具有防濺式接線盒的絕緣電阻應(yīng)2兆歐(電壓100V) | 熱電阻感溫元件在0℃ 時電阻值(R0)及其與在100℃ 時的電阻值(R100)比值: | 比值=R100/R | 分度號為Pt10、Pt100時;R100 /R0 =1.3850±0.001 | 分度號為Cu50、Cu100時;R100 /R0 =1.3850±0.0 | 耐腐、耐磨熱電偶WRET-001, WRET2-001, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRNR-12, WRER-12, WRNR2-12, WRER2-12, WRNR-13, WRER-13, WRNR2-13. WRER2-13. WRNR-14, WRER-14, WRNR2-14, WRER2-14, WRNR-15, WRER-15, WRNR2-15, WRER2-15, WRN-15A,. WRER-15A, WRNR2-15A, WRER2-15A, WRNT-31, WRET-31, WRNT2-31, WRET2-31, 套管式熱電偶WRNK-841n﹡D, WRNK-842n﹡D, WREK-841n﹡D. WREK-842n﹡D, WRNK-841n﹡I, WRNK-842n﹡I, WREK-841n﹡I. WREK-842n﹡I, WREK-842n﹡I, WRN-240A, WRN2-240A, WRE-240A, WRE2-240A, WRN-640A,RN2-640A,WRE-640A,WRE2-640A, .WRN-440A,RN2-440A, WRE-440A,RE2-440A, WRNK-240, WRNK2-240, WREK-240, WREK2-240, WRNK-440, WRNK2-440, WREK-440, WREK2-440, WRN-74O,WRN2-74O, WRN-74O, WRN2-74O, WRNR-15, WRNR2-15, WRNR-15A, WRNR2-15A, WRER-15, WRER2-15, WRER-15A, WRER215A, WRN-624, WRN-625, WRE-624, WRE-625, WRNR-12, WRER-12, WRNR2-12, .WRER2-12, WRNR-13, WRNR2-13, WRER-13, WRER2-13,WRNR-14, WRNR2-14, WRER14, WRER2-14, WRN-631, WRN2-631, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRN-130, WRN2-130, WRN-230, WRN2-230, WRN-330, WRN2-330, WRN2-430, WRN-430, WRE-130, WRE2-130, 熱電偶 WRE-230, WRE2-230, WRE-330, WRE2-330, WRE-430, WRE2-430, WREK-1313, WREK-1314, WREK-1315, WREK-1316, WREK-1323,. WREK-1324, WREK-1325, WREK-1326, WRNK-1313, WRNK-1314, WRNK-1315, WRNK-1316, WRNK-1323, WRNK-1324, WRNK-1325, WRNK-1326, WRN-001, WRE-001. WRN-002, WRE-002, WRN-235T, WRN2-235T, WRE-235T, WRE2-235T, WRN-130-F, WRN-230-F, WRN-330-F, WRN-430-F, WRN2-130-F, WRN2-330-F, WRN2-430-F, WRE-130-F, WRE-230-F, .WRE-330-F, WRE-430-F,WRE2-130-F,WRE2-230-F,WRE2-330-F.WRE2-430-F.WRN-130(*),WRN-230(*),WN-330(*),WN-430(*).,WRNN2-130(*),WNN2-230(*),WRNN2-330(*),WNN2-430(*),WREN-130, WREN-230, WREN-330, WREN-430, .WREN2-130, WREN2-230, WREN2-330, WREN2-430, WRNN-530(*),WRNN2-530(*),WREN-530,WREN2-530,WRNN-631(*),WRNN2-631(*),WREN-631, WREN2-631, WRN-12B, WRE-12B, WRN2-12B, 分析儀器: RZY-1,RZY-2,WRT-3P,CDR-4P,CDR-34P,CRY-1P,CRY-2P,CRY-31P,CRY-32P,ZRY-1P,ZRY-2P, ZRY-32P, RJY-1P, MA99-1, MA99-2, MA99-2A, MA99-3, MB99-1, MA99-2, MA99-2A, MA99-3, MC99-2, MC99-3, MD99-1, MD99-2, MD99-2A, MD99-3, ME99-1, ME99-2, ME99-3, MF99-1, MF99-2, MF99-3, BS-16A, BS-30A, BS-100A, BS-160A, BS-100N, BSZ-16, BSZ-30, BSZ-40, SZ-100, BSZ-160, SBS-100, SBS-160, DBS-100, DBS-160, CBS-A, CBS-B, CBS-C, JLF-A, WH-1, WH-2, WH-3, XW-80A, 油口分析測量儀器: SYD-267, SYD-3536, SYD-3536A, SYD-3536B, SYD-3536D, SYD-261, SYD-261A, SYD-261B, SYD-261D, WNE-1A, WNE-1B, SYD-260, SYD-260A, SYD-2122, SYD-2122A, SYD-2122B, SYD-265B, SYD-265C, SYD-265D, SYD-265D-1, SYD-265H, SYD-265C-2, SYD-265G, SYD-265-2, SYD-255, SYD-255G, SYD-6536, SYD-6536A, SYD-6536B, SYD-6536C, SYD-0165, SYD-1884, SYD-510, SYD-510B, SYD-510-I, SYD-510G, SYD-510G-I, SYD-510E, SYD-510G-II, SYD-510D, SYD-510F1, SYD-510Z-I, HWY-ND, SYD-2430, SYD-11143, SYD-5096A, SYD-5096, SYD-0232, SYD-268, SYD-30011, SYD-7305, SYD-7305A, SYD-12579, SYD-8019, SYD-509A, SYD-8017, SYD-8017A, SYD-0089, SYD-8018D, SYD-0175, SYD-0206, SYD-0193, SYD-11132, SYD-2801A, SYD-2801C, SYD-2801G, SYD-270A, SYD-380B, SYD-387, SYD-259, SYD-264, SYD-264A, SYD-511B, SYD-508, SYD-0168, SYD-0324, SYD-262, SYD-262A, SYD-8929, SYD-3069, SYD-6532, SYD-1792, SYD-3554, SYD-706, SYD-6541, SYD-17623, SYD-0308, SYD-421, SYD-507, 瀝青檢測類儀器: SYD-2806, SYD-2806E, SYD-2806F, SYD-2806G, SYD-2806H, SYD-4508A, SYD-4508B, SYD-4508C, SYD-4508D, SYD-4508F, SYD-4508G, SYD-2801D, SYD-2801D1, SYD-2801E, SYD-2801E1, SYD-2801F, SYD-2801I, SYD-0722, SYD-0722A, SYD-0615, SYD-0609, SYD-0610, SYD-265E, SYD-0620, SYD-0711A, SYD-0334, SYD-0631, SYD-0621,WNE-1C, SYD-0623, SYD-0624, SYD-0633, SYD-255A, PAV-1, SYD-XY150, SYD-0613, SYD-0613A, SYD-0709, SYD-0709A, SYD-0702, SYD-0702A, SYD-0131, SYD-F02-20, SYD-0719, SYD-0719A, SYD-0719B, SYD-0703, SYD-6307,NSF-1, SYD-0618, SYD-0653, SYD-0654, SYD-0655, SYD-0751, SYD-0752, SYD-0754, SYD-0755, SYD-1617, JJC-1D, 裝配式不銹鋼接線盒熱電阻,WZP-631B,蒸餾器: KDN-2,KDN-660D,ZS-200,ZISC-5, ZISC-10, ZISC-20,SHZ32-50, SHZ32-100, SHZ32-200, SHZ32-400,TLG-2FBI, TLG-2FBII, TLG-2FBIII,YN-ZD-5, YN-ZD-10, YN-ZD-20, YN-ZD-Z-5, YN-ZD-Z-10, YN-ZD-Z-20, SYZ-A, SYZ-550, SYZ-B, 1810-B, HS.Z11.5, HS.Z11.10, HS.Z11.20, RE-3000A, RE-3000B, RE-3000C, RE-3000D, RE-2000A, RE-2000B, RE-6000, RE-5299, RE-52B, RE-5286A, RE-52AA, RE-52, RE-5285A, RE52CS-1, RE52CS-2, RE-52CS, RE-52C, RE-5203, RE-5298A, RE-5298, RE-5205, RE-5210, RE-5220, RE5210A, SZ-93A, SZ-96A, SZ-97A, SZ-93, SZ-96, SZ-97, SZ-93-1, R201BL, R203B, R204B, R204B3, R205B, R205B2, R206B, R206D, R308B, R502B, R503B, R1002B, R2002B, R2003KB, R2003K2B, R5003K2B, R5003K2S, RE52-1, RE52-2, RE52-3, RE52-4, SZ-1, SZ-2, SZ-3, 消化爐,消煮爐: KDN-4,KDN-8,KDN-12,KDN-16,KDN-20,KDN-12C,KDN-16C,HYP4,HYP-1004,SPCA-4,HYP-1008,HYP-1014,HYP-1020,HYP-1040, |