主要技術參數(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)是用細金屬絲均勻地雙繞在絕緣材料制成的骨架上,當被測介質(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)一設計產(chǎn)品,接口尺寸通用,互換性好; | 采用裝配式結(jié)構,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不小于100MΩ | 裝配銅熱電阻的常溫絕緣電阻應不小于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℃。 | 熱響應時間:在溫度出現(xiàn)階躍變化時,熱電阻的輸出變化至相當于該階躍變化的50%,所需要的時間,稱為熱響應時間,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:應不小于其保護套管外徑的8-10倍。 | 絕緣電阻:當周圍空氣溫度為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 | 套管式熱電偶熱電阻,WZP-93C2,WZP2-39C1,WZPN2-230,WZP-93C1,WRN-240A,WRNN2-130,WRE-130-F,WRN2-740,JB81-94,WZPK-536SA,WRE-631,WRN-624,MWFT-3,.WZPK2-165SA,WZP-631,WRP2-010,WZPM-0110,WRE-624,WZP-015S,WZP-013S,WRN-625,WZPK-165S,WZP2-2312A,WRN-520,WRNM,WSSX-472,WSSX-471,WSSX-462,WSSX-461,WSSX-452,WSSX-451,WSS-572,WSS-472,WSS-571,wss-471,wss-562,wss-462雙金屬溫度計,wss-561,wss-461,wss-552,wss-452,WSS-551,wss-451,wss-582,wss-482,wss-581,wss-481,wss-512,wss-412,.wss-312,wss-511,wss-411,wss-311,wss-502,WSS-402,wss-302,wss-501,wss-401,WSS-301,WSSXP-481,WSSXE-481,WSSXP-411,WSSXE-411,WSSXP-401,WSSXE-401,WSSP-581,WSSP-481,WSSP-511,WSSP-411,WSSP-501,WSSP-401,WSSE-581,WSSE-481,WSSE-511,WSSE-411,WSSE-501,WSSE-401,WSS-583L熱套式雙金屬溫度計,WSSX-403L,WSSX-483L,WSS-483L,WSS-413L,WSS-413L,WSS-503L,WSS-403L,WSSX-483S,WSSX-413S,WSS-483S,WSS-513S,WSS-413S,WSS-503S,WSS-403S,WSSX-486電接點雙金屬溫度計,WSSX-416,WSSX-406,WSSX-485,WSSX-415,.WSSX-405,WSSX-484,WSSX-414,WSSX-404,WSSX-483,WSSX-413,WSSX-403,WSSX-482,WZPK-124U,WZPK-406U,WZPK-503U,WZP-3212U,WZP-270U,WRNN2-436,WRP-130,WRP2-130,WRP-131,WRP2-131,WRQ-130,WRQ2-130,WRQ-131,WRQ2-131,WRR-130,WRR2-130,WZPK-336SA,WZPK2-335SA,WZPK-236SA,WZPK2-235SA,WZPK-333S,WZPK-334S,WZPK-335S,WZPK-236S,WZPK-235S, WZPK-234S, WZPK-233S, WZPK2-136S, WZPK2-135SA, WZPK-136S, WZPK-135S, WZPK-134S, WRNR-01, WRER2-14, WRNR2-14, WRER-14, WRER2-12, WRNR2-12, WRER-12, WRNR-12, WZP2-6312A, WZP-6312A, WZP2-631, WRN-624, WRNR2-01, SBWR-4170/440D隔爆本安型帶熱電偶電阻溫度變送器,SBWZ-4450,SBWZ-2450,SBWR-2160,SBWR-4150。 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, 試驗器: SYP1001B-2, SYP1001B-5, SYP1002B-2, SYP1002-3, SYP1003-6, SYP1003-6A, SYP1003-6B, SYP1003-6E, SYP1003, SYP1003-7, SYP1003-7A, SYP1003-7B, SYP1003-7D, SYP1003-9, SYP1003-9A, SYP1003-9B, SYP1004-3, SYP1008-3C, SYP1008-3E, SYP1003-8, SYP1010-2, SYP1013, SYP1015-1, SYP1015-3, SYP1016-1B, SYP1016-1C, SYP1016-2C, SYP1016-2D, SYP1016-2E, SYP1016-2F, SYP1017-1,SYP1021, SYP2000-1, SYP1022-2A, SYP1022-2C, SYP1022-2D, SYP1022-1C, SYP1023, SYP1024, SYP1025, SYP1026, SYP1026-1, SYP1027, SYP1027-1, SYP20013A, SYP2001-3B, SYP2001-3C, SYP2007-1, SYP3006-1, SYP3007B-2, SYP3008, SYP3010-1, SYP3013, SYP4100-1, SYP4101, SYP4101-1, SYP4101-A, SYP4101-B, SYP4106-1, XSP, SYP4108, SYP4111-2, SYP4202-1, SYP4301-2, SYP7004-1, SYP7005, ZL-2, SYP9000, SYP9001A, SYP9001B, SYP9002B-1, SYP9002-1, SYP9003-2, SYP9010, SYP9012, SYP2102, 測汞儀: F732-V, F732-VJ, F732-S, F732-G, ZYG-11, DHL-2, DHL-3, DHL-4, DHL-100, DHL-200, DHL-300, HL-2D, HL-6D, HL-7D, HL-2B, HL-3B, HL-4B, HL-5B, HL-6B, HL-7B,HL-100B, HL-200B, HL-300B, HL-600B, HL-2, HL-3, HL-4, HL-5, HL-6, HL-7, HL-100, HL-200, HL-300, HL-600, DHL-A, HDL-B, HL-1, HL-1B, HL-1S, HL-2, HL-2B, HL-2D, HL-2S, HL-3, HL-3B, HL-4, HL-4B, HL-4D, HL-5, HL-5A, HL-5B, HL-6, HL-6B, HL-6D, BT-100, BT-100B, BT-100D, BT-200, BT-200B, BT-600, BT-600B, T-600C, HL-2N, BT-100N, 顆粒測定儀: LKY-2, PME1,PME, 粘度計: NDJ-1,NDJ-4,NDJ-5,NDJ-8SN,NDJ-9SN,SNB-1,SNB-4,DV-1,NDJ-7,NDJ-5S,NDJ-8S,NDJ-79,NDJ-1B,NDJ-1B-1, NDJ-99, NDJ-1C, NDJ-1D, NDJ-1F, NDJ-1E, 水分測定儀: LHS16-A, DHS16-A, SH-10A, SC69-02C, EMA-100, EMA-50, EMA-20, SC-10, MA35, MA150, MA100, MB35, MB45, MB23, MB25, KF-1, KF-1A, KF-1, KF-1B, LDS-IG, LDS-IH, LDS-IF, LJDS-I, LDS-IY, LDS-IK, LDS-IS, LDS-2G, LDS-2A, LDS-2, LDS-3H, LJS-IA, LJS-IB, LMS-30, LTJM-2008, LTJM-8, LTJM-3, 電導率儀,: FE20K,FE20,FE30K,FE30,FG2-B,FG2-ELK,FG2-FK,FG3-B,FG3-ELK,FG3-FK,SG2-B,SG2-ELK,SG2-T,SG2-FK,SG2-ASK,SG3-B,SG3-ELK,SG3-ELK740SG,SGE-FK2,SG3-FK10,SG3-ASK,SG6-ELK,SG6-FK2,SG6-FK10,SG6-ASK,SG7-B,SG7-ELK,SG7-ELK740SG,SG7-FK2,SG7-FK10,SG7-ASK,SG8-B,SG8-ELK,SG8-FK,SG8-ASK,S20K,S20,S30K,S30,S40K,S40,S40N,PB-10,PB-21,PT-10,PT-10P,PP-15-P11,PP-20-P11,PP-25-P11,PP-50-P11,DDS-307,DDS-307A,DDSJ-308A,DDSJ-318,DDBJ-350,DDB-303A,DDS-11D,TM-03,DDS-11C,DDS-11A,DDG-5205A,DDG-33,DDG-330,DDD-32D ,DCG-760A,DDB-1,DDB-2,DDB-11A,DDC-11C, |