主要技术参数
|
热电阻类型 |
测温范围℃ |
分度号 |
允许偏差△t℃ |
wzp型铂电阻 |
-200~420 |
Pt100 |
B级(-200~800℃)允差±(0.30+0.005/t/) |
*(-200~650 ℃ ) 允差±(0.15+0.002/t/) |
WZC型铜电阻 |
-150~100 |
Cu50 |
-50~100℃允差 |
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工作原理
|
热电阻是利用物质在温度变化时本身电阻也随着发生变化的特性来测量温度的。热电阻的受热部分(感温元件)是用细金属丝均匀地双绕在绝缘材料制成的骨架上,当被测介质中有温度梯度存在时,所测得的温度是感温元件所在范围内介质层中的平均温度.
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特 点
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全国统一设计产品,接口尺寸通用,互换性好;
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采用装配式结构,零件分解性好,维修方便;
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更换易损件成本低;
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规格齐全,性能稳定可靠。
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绝缘电阻
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装配铂热电阻的常温绝缘电阻应不小于100MΩ
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装配铜热电阻的常温绝缘电阻应不小于50MΩ
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常温绝缘电阻的试验电压为10~100V DC。
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自热影响:铂电阻允许通过的zui大电流为5mA,由此产生的温升不大于0.3℃。
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热响应时间:在温度出现阶跃变化时,热电阻的输出变化至相当于该阶跃变化的50%,所需要的时间,称为热响应时间,用τ0.5表示。
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热电阻时间常数
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热惰性级别
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时间常数(秒)
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热惰性级别
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时间常数(秒)
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Ⅰ
|
90-180
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Ⅲ
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10-30
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Ⅱ
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30-90
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Ⅳ
|
10
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热电阻的公称压力:一般是指在工作温度下保护管所能承受的静态外压而不破裂。
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热电阻zui小插入深度:应不小于其保护套管外径的8-10倍。
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绝缘电阻:当周围空气温度为15-35℃,相对湿度<80%时,绝缘电阻 20兆欧(电压100V)
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。具有防溅式接线盒的绝缘电阻应2兆欧(电压100V)
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热电阻感温元件在0℃ 时电阻值(R0)及其与在100℃ 时的电阻值(R100)比值:
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比值=R100/R
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分度号为Pt10、Pt100时;R100
/R0
=1.3850±0.001
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分度号为Cu50、Cu100时;R100
/R0
=1.3850±0.0
|
耐腐、耐磨热电偶
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,
套管式热电偶
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,
WRER
215A,
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,
热电偶
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,
分析仪器:
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,
油口分析测量仪器:
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,
沥青检测类仪器:
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,
装配式不锈钢接线盒热电阻,WZP-631B,蒸馏器:
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,
消化炉,消煮炉:
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,