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k型热电偶

更新时间:2016年06月18日 作者:绍兴中仪 关注量:
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k型热电偶
k型热电偶

k型热电偶(中高温测温用,较经济实惠,另有多种分度号,如n,e,s,b等可选)。

k型热电偶分度表

温度℃k型镍铬-镍硅(镍铬-镍铝)热电动势(mv)(jjg 351-84)参考端温度为0℃
0123456789
-50-1.889-1.925-1.961-1.996-2.032-2.067-2.102-2.137-2.173-2.208
-40-1.527-1.563-1.600-1.636-1.673-1.709-1.745-1.781-1.817-1.853
-30-1.156-1.193-1.231-1.268-1.305-1.342-1.379-1.416-1.453-1.490
-20-0.777-0.816-0.854-0.892-0.930-0.968-1.005-1.043-1.081-1.118
-10-0.392-0.431-0.469-0.508-0.547-0.585-0.624-0.662-0.701-0.739
-00-0.039-0.0790.118-0.157-0.1970.236-0.275-0.314-0.353
000.0390.0790.1190.1580.1980.2380.2770.3170.357
100.3970.4370.4770.5170.5570.5970.6370.6770.7180.758
200.7980.8380.8790.9190.9601.0001.0411.0811.1221.162
301.2031.2441.2851.3251.3661.4071.4481.4891.5291.570
401.6111.6521.6931.7341.7761.8171.8581.8991.9401.981
502.0222.0642.1052.1462.1882.2292.2702.3122.3532.394
602.4362.4772.5192.5602.6012.6432.6842.7262.7672.809
702.8502.8922.9332.8753.0163.0583.1003.1413.1833.224
803.2663.3073.3493.3903.4323.4733.5153.5563.5983.639
903.6813.7223.7643.8053.8473.8883.9303.9714.0124.054
温度℃0123456789
1004.0954.1374.1784.2194.2614.3024.3434.3844.4264.467
1104.5084.5494.5904.6324.6734.7144.7554.7964.8374.878
1204.9194.9605.0015.0425.0835.1245.1645.2055.2465.287
1305.3275.3685.4095.4505.4905.5315.5715.6125.6525.693
1405.7335.7745.8145.8555.8955.9365.9766.0166.0576.097
1506.1376.1776.2186.2586.2986.3386.3786.4196.4596.499
1606.5396.5796.6196.6596.6996.7396.7796.8196.8596.899
1706.9396.9797.0197.0597.0997.1397.1797.2197.2597.299
1807.3387.3787.4187.4587.4987.5387.5787.6187.6587.697
1907.7377.7777.8177.8577.8977.9377.9778.0178.0578.097
2008.1378.1778.2168.2568.2968.3368.3768.4168.4568.497
2108.5378.5778.6178.6578.6978.7378.7778.8178.8578.898
2208.9388.9789.0189.0589.0999.1399.1799.2209.2609.300
2309.3419.3819.4219.4629.5029.5439.5839.6249.6649.705
2409.7459.7869.8269.8679.9079.9489.98910.02910.07010.111
25010.15110.19210.23310.27410.31510.35510.39610.43710.47810.519
26010.56010.60010.64110.88210.72310.76410.80510.84810.88710.928
27010.96911.01011.05111.09311.13411.17511.21611.25711.29811.339
28011.38111.42211.46311.50411.54511.58711.62811.66911.71111.752
29011.79311.83511.87611.91811.95912.00012.04212.08312.12512.166
温度℃0123456789
30012.20712.24912.29012.33212.37312.41512.45612.49812.53912.581
31012.62312.66412.70612.74712.78912.83112.87212.91412.95512.997
32013.03913.08013.12213.16413.20513.24713.28913.33113.37213.414
33013.45613.49713.53913.58113.62313.66513.70613.74813.79013.832
34013.87413.91513.95713.99914.04114.08314.12514.16714.20814.250
35014.29214.33414.37614.41814.46014.50214.54414.58614.62814.670
36014.71214.75414.79614.83814.88014.92214.96415.00615.04815.090
37015.13215.17415.21615.25815.30015.34215.39415.42615.46815.510
38015.55215.59415.63615.67915.72115.76315.80515.84715.88915.931
39015.97416.01616.05816.10016.14216.18416.22716.26916.31116.353
40016.39516.43816.48016.52216.56416.60716.64916.69116.73316.776
41016.81816.86016.90216.94516.98717.02917.07217.11417.15617.199
42017.24117.28317.32617.36817.41017.45317.49517.53717.58017.622
43017.66417.70717.74917.79217.83417.87617.91917.96118.00418.046
44018.08818.13118.17318.21618.25818.30118.34318.38518.42818.470
45018.51318.55518.59818.64018.68318.72518.76818.81018.85318.896
46018.93818.98019.02319.06519.10819.15019.19319.23519.27819.320
47019.36319.40519.44819.49019.53319.57619.61819.66119.70319.746
48019.78819.83119.87319.91619.95920.00120.04420.08620.12920.172
49020.21420.25720.29920.34220.38520.42720.47020.51220.55520.598
温度℃0123456789
50020.64020.68320.72520.76820.81120.85320.89620.93820.98121.024
51021.06621.10921.15221.19421.23721.28021.32221.36521.40721.450
52021.49321.53521.57821.62121.66321.70621.74921.79121.83421.876
53021.91921.96222.00422.04722.09022.13222.17522.21822.26022.303
54022.34622.38822.43122.47322.51622.55922.60122.64422.68722.729
55022.77222.81522.85722.90022.94222.98523.02823.07023.11323.156
56023.19823.24123.28423.32623.36923.41123.45423.49723.53923.582
57023.62423.66723.71023.75223.79523.83723.88023.92323.96524.008
58024.05024.09324.13624.17824.22124.26324.30624.34824.39124.434
59024.47624.51924.56124.60424.64624.68924.73124.77424.81724.859
60024.90224.94424.98725.02925.07225.11425.15725.19925.24225.284
61025.32725.36925.41225.45425.49725.53925.58225.62425.66625.709
62025.75125.79425.83625.87925.92125.96426.00626.04826.09126.133
63026.17626.21826.26026.30326.34526.38726.43026.47226.51526.557
64026.59926.64226.68426.72626.76926.81126.85326.89626.93826.980
65027.02227.06527.10727.14927.19227.23427.27627.31827.36127.403
66027.44527.48727.52927.57227.61427.65627.69827.74027.78327.825
67027.86727.90927.95127.99328.03528.07828.12028.16228.20428.246
68028.28828.33028.37228.41428.45628.49828.54028.58328.62528.667
69028.70928.75128.79328.83528.87728.91928.96129.00229.04429.086
温度℃0123456789
70029.12829.17029.21229.26429.29629.33829.38029.42229.46429.505
71029.54729.58929.63129.67329.71529.75629.79829.84029.88229.924
72029.96530.00730.04930.09130.13230.17430.21620.25730.29930.341
73030.38330.42430.46630.50830.54930.59130.63230.67430.71630.757
74030.79930.84030.88230.92430.96531.00731.04831.09031.13131.173
75031.21431.25631.29731.33931.38031.42231.46331.50431.54631.587
76031.62931.67031.71231.75331.79431.83631.87731.91831.96032.001
77032.04232.08432.12532.16632.20732.24932.29032.33132.37232.414
78032.45532.49632.53732.57832.61932.66132.70232.74332.78432.825
79032.86632.90732.94832.99033.03133.07233.11333.15433.19533.236
80033.27733.31833.35933.40033.44133.48233.52333.56433.60633.645
81033.68633.72733.76833.80933.85033.89133.93133.97234.01334.054
82034.09534.13634.17634.21734.25834.29934.33934.38034.42134.461
83034.50234.54334.58334.62434.66534.70534.74634.78734.82734.868
84034.90934.94934.99035.03035.07135.11135.15235.19235.23335.273
85035.31435.35435.39535.43535.47635.51635.55735.59735.63735.678
86035.71835.75835.79935.83935.88035.92035.96036.00036.04136.081
87036.12136.16236.20236.24236.28236.32336.36336.40336.44336.483
88036.52436.56436.60436.64436.68436.72436.76436.80436.84436.885
89036.92536.96537.00537.04537.08537.12537.16537.20537.24537.285
温度℃0123456789
90037.32537.36537.40537.44337.48437.52437.56437.60437.64437.684
91037.72437.76437.83337.84337.88337.92337.96338.00238.04238.082
92038.12238.16238.20138.24138.28138.32038.36038.40038.43938.479
93038.51938.55838.59838.63838.67738.71738.75638.79638.83638.875
94038.91538.95438.99439.03339.07339.11239.15239.19139.23139.270
95039.31039.34939.38839.42839.46739.50739.54639.58539.62539.664
96039.70339.74339.78239.82139.86139.90039.93939.97940.01840.057
97040.09640.13640.17540.21440.25340.29240.33240.37140.41040.449
98040.48840.52740.56640.60540.64540.63440.72340.76240.80140.840
99040.87940.91840.95740.99641.03541.07441.11341.15241.19141.230
100041.26941.30841.34741.38541.42441.46341.50241.54141.58041.619
101041.65741.69641.73541.77441.81341.85141.89041.92941.96842.006
102042.04542.08442.12342.16142.20042.23942.27742.31642.35542.393
103042.43242.47042.50942.54842.58642.62542.66342.70242.74042.779
104042.81742.85642.89442.93342.97143.01043.04843.08743.12543.164
105043.20243.24043.27943.31743.35643.39443.43243.47143.50943.547
106043.58543.62443.66243.70043.73943.77743.81543.85343.89143.930
107043.96844.00644.04444.08244.12144.15944.19744.23544.27344.311
108044.34944.38744.42544.46344.50144.53944.57744.61544.65344.691
109044.72944.76744.80544.84344.88144.91944.95744.99545.03345.070
温度℃0123456789
110045.10845.14645.18445.22245.26045.29745.33545.37345.41145.448
111045.48645.52445.56145.59945.63745.67545.71245.75045.78745.825
112045.86345.90045.93845.97546.01346.05145.08846.12646.16346.201
113046.23846.27546.31346.35046.38846.42546.46346.50046.53746.575
114046.61246.64946.68746.72446.76146.79946.83646.87346.91046.948
115046.98547.02247.05947.09647.13447.17147.20847.24547.28247.319
116047.35647.39347.43047.46847.50547.54247.57947.61647.65347.689
117047.72647.762847.80047.83747.87447.91147.94847.98548.02148.058
118048.09548.13248.16948.20548.24248.27948.31648.35248.38948.426
119048.46248.49948.53648.57248.60948.64548.68248.71848.75548.792
120048.82848.86548.90148.93748.97449.01049.04749.08349.12049.156
121049.19249.22949.26549.30149.33849.37449.41049.44649.48349.519
122049.55549.59149.62749.66349.70049.73649.77249.80849.84449.880
123049.91649.95249.98850.02450.06050.09650.13250.16850.20450.240
124050.27650.31150.34750.38350.41950.45550.49150.52650.56250.598
125050.63350.66950.70550.74150.77650.81250.84750.88350.91950.954
126050.99051.02551.06151.09651.13251.16751.20351.23851.27451.309
127051.34451.38051.41551.45051.48651.52151.55651.59251.62751.662
128051.69751.73351.76851.80351.83651.87351.90851.94351.97952.014
129052.04952.08452.11952.15452.18952.22452.25952.28452.32952.364
温度℃0123456789
130052.39852.43352.46852.50352.53852.57352.60852.64252.67752.712
131052.74752.78152.81652.85152.88652.92052.95552.98053.02453.059
132053.09353.12853.16253.19753.23253.26653.30153.33553.37053.404
133053.43953.47353.50753.64253.57653.61153.64553.67953.71453.748
134053.78253.81753.85153.88553.92653.95453.98854.02254.05754.091
135054.12554.15954.19354.22854.26254.29654.33054.36454.39854.432
136054.46654.50154.53554.56954.60354.63754.67154.70554.73954.773
137054.80754.84154.875






k型热电偶选型

wr工业k型热电偶型号
wr口k铠装k型热电偶型号
感温度元件材料n镍铬-镍硅(k)
m镍铬硅-镍硅(n)
e镍铬-铜硅(e)
c镍-铜镍(t)
f铁-铜镍(j)
装配方式k铠装式
热电偶丝对数单支
2双支
安装固定形式1无固定装置
2固定卡套螺纹
3活动卡套螺纹
4固定卡套法兰
5活动卡套法兰
接线盒形式3防水式
4防爆式
6圆接插式
7扁接插式
8手柄式
9补偿导线式
保护管直径3ф3mm
5ф5mm
6ф6mm
8ф8mm
10ф10mm
12ф12mm
14ф14mm
16ф16mm
20ф20mm
附加装置m接触块式
g包箍式

推荐使用温度

品 种套管材料外 径使用温度(°c)
长期使用短期使用
镍铬-镍硅1cr18ni9ti2.0600700
3.0,4.0,5.0,6.0,8.0800900
gh30302.0,3.0800900
4.0,5.09001000
6.0,8.010001100
镍铬硅-镍硅1cr18ni9ti2.0600700
3.0,4.0,5.0,6.0,8.0800900
gh30302.0,3.09001000
4.0,5.010001100
6.0,8.011001200
gh30392.0,3.0,4.010001100
5.0,6.0,8.011001200
镍铬-铜镍1cr18ni9ti2.0500600
3.0,4.0,5.0600700
6.0,8.0700800
铁-铜镍1cr18ni9ti2.0400500
3.0,4.0,5.0500600
6.0,8.0600750
铜-铜镍1cr18ni9ti2.0,3.0,4.0,5.0250300
6.0,8.0300350
铂铑10-铂gh30392.0,3.0,4.010001100
5.0,6.0,8.011001200

热电偶测温范围

型号分度号允差等级
iii
允差值测温范围°c允差值测温范围°c
wrnkk±1.5°c-40~+375±2.5°c-40~+333
±0.004ltl375~1000±0.0075ltl333~1200
wrmkn±1.5°c-40~+375±2.5°c-40~+333
±0.004ltl375~1000±0.0075ltl333~1200
wreke±1.5°c-40~+375±1.5°c-40~+333
±0.004ltl375~800±0.004ltl333~900
wrfkj±1.5°c-40~+375±1.5°c-40~+333
±0.004ltl375~750±0.004ltl333~750
wrckt±1.5°c-40~+125±1°c-40~+133
±0.004ltl125~350±0.0075ltl133~1000
wrpks±1°c0~+1100±2.5°c0~600
±[0.003(t-1100)]1100~1600±0.0025ltl600~1600

常温绝缘电阻

k型热电偶在环境温度为20±15°c,相对湿度不大于80%试验电压为500±50v(直流)电极与外套管之间的绝缘电阻>1000mω。即1m长的试样的绝缘电阻为1000mω;10m长的试样的绝缘电阻为100mω;

偶丝直径及材料

偶丝形式单支式双支式
套管直径ф3 ф4 ф5 ф6 ф8ф3ф4 ф5 ф6 ф8
套管材质e﹑j﹑t1cr18ni9ti1cr18ni9ti
k﹑n1cr18ni9ti gh30301cr18ni9ti gh3030
sgh3039gh3039

防爆分组

k型热电偶防爆等级

k型热电偶隔爆类型图

1、电气设备类型

 i类--煤矿井下用电气设备、ii类--工厂用电气设备

2、防爆等级

 防爆k型热电偶的防爆等级按其使用于爆炸性气体混合物最大安全间隙分为a b c三级。

类别级别最大试验安全间隙(mesg)mm
iia0.9≤mesg
b0.5
cmesg≤0.5

3、温度组别

 防爆k型热电偶的温度组别按其外露部分允许最高面温度分为t1~t6

温度组别允许最高表面温度 ℃
t1450
t2300
t3200
t4135
t5100
t685

4、防爆级别
 exdii□t□
 exiaii□t□
 防护等级:ip65。

k型热电偶工作原理

铠装k型热电偶的工作原理与一般工业热电偶一样,基于seeback(塞贝克)效应,即:如果由两种不同成分的均质导体(热电极)组成闭合回路,当两端存在温度梯度时,回路中就有电流通过,那么两端之间就存在seeback电势-热电势(如下图所示)

热电偶测温原理图

k型热电偶工作原理结构图

热电偶测温原理视频

wr系列热电偶是本公司精心设计制造的新一代温度传感系列产品,热电偶按分度号不同分为k型热电偶、e型热电偶等,本系列产品符合国际电工委员会(iec)标准,技术性能可替代同类进口产品。广泛用于航空、原子能、石油、化工冶金、电力、机械等现代化设备和离科技领域,也适合于进口成套设备的维修更换或输出项目的成套配套以及技术改造项目的配套。

在化工厂,生产现场常伴有各种易燃、易爆等化学气体、蒸汽,如果使用普通热电偶非常不安全,极易引起环境气体爆炸。因此,在这些场合必须使用防爆热电偶作温度传感器,本厂生产的隔爆或本安型热电偶产品适用在diibt4~diict6、ibiibt4、iaiibt4、iaiict6温度组别区间内具有爆炸性气体危险的场所内。工业用防爆热电偶是一种温度传感器,在化学工业自控系统中应用极广,通过温度传感器,可将控制对象的温度参数变为电信号,传递给显示,记录和调节仪表,对系统实行检测,调节和控制。

绍兴中仪生产的隔爆或本安型热电偶技术性能符合jb/t9238-1999工业热电偶技术条件gb/t16839-1997、gb/t16839.2-1997工业热电偶分度表及允许误差,同时产品均符合爆炸性环境用防爆电气设备通用要求gb3836.1-2000、gb3836.2-2000标准,由国家级仪器仪表防爆安全监督检验站对产品图样、技术文件、样机进行专门审定和批准,并发给防爆合格证。

防爆热电偶必须使用本安补偿导线,其分布参数控制范围:总电感量≤2mh,电容量≤0.06,同时使用关联设备zya系列安全栅。通常装配热电偶和显示仪表、记录仪表、电子计算等配套使用,直接测量各种生产过程中的0°c~1300°c范围内液体、蒸汽和气体介质以及固体表面温度。装配热电偶通常是由热电极绝缘材料保护管和接线盒等部件组成。其中两热电极一端焊接在一起,起感温元件的作用,是热电偶的核心部份。绝缘材料的作用是将两热电极隔离开,防止短路现像。保护管的作用是使热电极和被测介质不直接接触,此外还起固定和支撑热电偶感温元件的作用。接线盒的作用是用来固定连接感温元件与外接导线,并保护感温元件免受外界气氛侵蚀。

微细铠装k型热电偶图

微细铠装k型热电偶图

应用行业

·k型热电偶与显示仪表等配套,在一定的使用范围内对气体、液体介质或固体表面温度进行自动检测或自动调节。
·钢铁和非钢铁工业:鼓风炉、转炉、均热炉、退火炉、电子炉、真空感应炉、连续浇铸筒、热处理器、压榨机等。
·电力和气体过程控制工业:过热器、交流换热器、锅炉、冷水处理器、输入输出带、涡轮、金属轴承、气体发生器、lpg、lng等。
·电力和电子业:发动机、转换和发生装置、半导体、ic、lsi、光电管等的过程温度控制。
·玻璃陶瓷工业:转窑,隧道窑和其它各种玻璃、陶瓷、砖、流体预热器、加热窑等。
·化学和石化工业:各种气体液体反应;注塑成型;裂化和矫正塔;合成纺织;制药等。
·核能反应堆:反应器,水、气体、燃料冷却处理。
·造船工业:lng和lpg的表面温度,交流换热器,柴油机等。
·飞机航空航天业:引擎排气
·纺织食品业:纤维注射器、电镀和滚动加热器、染色、糖精制、肉类加工、面包、糖果、酿酒等过程的温度控制。
·其他:等离子弧、电子束、激光、单晶体生长和其他物理特性方面的实验室研究。

热电偶构造

由于热电偶的使用要求不同,其外形也往往存在很大差异,但是它们的基本结构大致相同,通常由铠装热电偶元件,安装固定装置和接线盒等主要部件组成。

 1、热电偶元件:它是由金属套管,绝缘材料(一般为氧化镁粉)和热电偶线三者组合而成的坚实体。按测量端的结构形式,一般可分为绝缘k型热电偶、接壳k型热电偶、露端k型热电偶和分离式绝缘型k型热电偶供用户选用,如果用户没有指明测量端的结构形式,则提供绝缘型或接壳形。
 2、安装固定装置,其结构形式可分为:无固定装置k型热电偶,固定卡套螺纹k型热电偶、可动卡套螺纹k型热电偶,固定卡套法兰k型热电偶,可动卡套法兰k型热电偶和外保护管式k型热电偶等。
 3、接线方式:其结构可分为,瓷接线板k型热电偶、简易式k型热电偶,同径保护帽式,防溅接钱盒式k型热电偶、防水接线盒式k型热电偶、隔爆接线盒式k型热电偶、插座式k型热电偶、弹簧压着式k型热电偶、手柄式k型热电偶、带补偿导线k型热电偶等。

k型热电偶的优点

1、测温范围大:本系列铠装热电偶规格范围大,品种规格齐全适用于各种测量组合,在-200℃~+1600℃温度范围内均能使用。
2、反应速度快:与装配式热电偶相比,因为外径小热容量少,故微小的温度变化也能迅速反应,尤其是微细铠装热电偶更为明显。
3、安装使用方便:k型热电偶材料可在其外径5倍的圆柱体上绕5圈并可在多处位置弯曲。
4、使用寿命长:k型热电偶易引起热电势恶化,断线等事故,而wr□k系列铠装k型热电偶用氧化镁绝缘,气密性好、致密性好、致密度高,寿命长。
5、机械强度,耐压性能好:在有强烈震动,低温,高温,腐蚀性等恶劣条件下均能安全使用。k型热电偶最高可承受3*103kpa/cm2的压力。
6、k型热电偶外径尺寸范围:铠装热电偶外径可提供φ2.5~8mm,特殊要求的可以提供φ12mm的产品。
7、铠装热电偶的最大长度:铠装热电偶的最大长度可达500m。
8、铠装热电偶芯数:可提供单支芯(2芯),双支芯(4芯)和三支芯(6芯)的各类铠装热电偶。
9、装配热电偶装配简单,更换方便;
10、压簧式感温元件,抗振性能好;
11、k型热电偶测温范围大;
12、机械强度高,耐压性能好;
13、产品执行标准:iec584 / iec1515 / gb/t16839-1997 / jb/t5582-91
14、常温绝缘电阻:热电偶在环境温度为20±15°c,相对湿度不大于80%,试验电压为500±50v(直流)电极与外套管之间的绝缘电阻>1000ω.m。

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环亚娱乐ag88为了适应新世纪发展的需要,公司提出了"人才为本、创新为魂、协作为基、质量为根"企业方针和把公司办成世界一流的自动化仪器仪表重要生产企业的发展目标,一贯坚持与国内外一线芯片厂商合作,精选可靠元器件,采用先进技术并引进大量校验检测设备,生产具有高性价比的k型热电偶,真诚欢迎各界朋友、中外客商来我公司参观、考察、指导,谋求共同发展。

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