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K型熱電偶

更新時間:2016年06月18日 作者:紹興中儀 關注量:
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K型熱電偶
K型熱電偶

K型熱電偶(中高溫測溫用,較經濟實惠,另有多種分度號,如N,E,S,B等可選)。

K型熱電偶分度表

溫度℃K型鎳鉻-鎳硅(鎳鉻-鎳鋁)熱電動勢(mV)(JJG 351-84)參考端溫度為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
溫度℃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
溫度℃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
溫度℃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
溫度℃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
溫度℃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
溫度℃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
溫度℃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型熱電偶選型

WR工業K型熱電偶型號
WR口K鎧裝K型熱電偶型號
感溫度元件材料N鎳鉻-鎳硅(K)
M鎳鉻硅-鎳硅(N)
E鎳鉻-銅硅(E)
C鎳-銅鎳(T)
F鐵-銅鎳(J)
裝配方式K鎧裝式
熱電偶絲對數單支
2雙支
安裝固定形式1無固定裝置
2固定卡套螺紋
3活動卡套螺紋
4固定卡套法蘭
5活動卡套法蘭
接線盒形式3防水式
4防爆式
6圓接插式
7扁接插式
8手柄式
9補償導線式
保護管直徑3Ф3mm
5Ф5mm
6Ф6mm
8Ф8mm
10Ф10mm
12Ф12mm
14Ф14mm
16Ф16mm
20Ф20mm
附加裝置M接觸塊式
G包箍式

推薦使用溫度

品 種套管材料外 徑使用溫度(°C)
長期使用短期使用
鎳鉻-鎳硅1Cr18Ni9Ti2.0600700
3.0,4.0,5.0,6.0,8.0800900
GH30302.0,3.0800900
4.0,5.09001000
6.0,8.010001100
鎳鉻硅-鎳硅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
鎳鉻-銅鎳1Cr18Ni9Ti2.0500600
3.0,4.0,5.0600700
6.0,8.0700800
鐵-銅鎳1Cr18Ni9Ti2.0400500
3.0,4.0,5.0500600
6.0,8.0600750
銅-銅鎳1Cr18Ni9Ti2.0,3.0,4.0,5.0250300
6.0,8.0300350
鉑銠10-鉑GH30392.0,3.0,4.010001100
5.0,6.0,8.011001200

熱電偶測溫范圍

型號分度號允差等級
III
允差值測溫范圍°C允差值測溫范圍°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

常溫絕緣電阻

K型熱電偶在環境溫度為20±15°C,相對濕度不大于80%試驗電壓為500±50V(直流)電極與外套管之間的絕緣電阻>1000MΩ。即1m長的試樣的絕緣電阻為1000MΩ;10m長的試樣的絕緣電阻為100MΩ;

偶絲直徑及材料

偶絲形式單支式雙支式
套管直徑Ф3 Ф4 Ф5 Ф6 Ф8Ф3Ф4 Ф5 Ф6 Ф8
套管材質E﹑J﹑T1Cr18Ni9Ti1Cr18Ni9Ti
K﹑N1Cr18Ni9Ti GH30301Cr18Ni9Ti GH3030
SGH3039GH3039

防爆分組

K型熱電偶防爆等級

K型熱電偶隔爆類型圖

1、電氣設備類型

 I類--煤礦井下用電氣設備、II類--工廠用電氣設備

2、防爆等級

 防爆K型熱電偶的防爆等級按其使用于爆炸性氣體混合物最大安全間隙分為A B C三級。

類別級別最大試驗安全間隙(MESG)mm
IIA0.9≤MESG
B0.5<MESG<0.9
CMESG≤0.5

3、溫度組別

 防爆K型熱電偶的溫度組別按其外露部分允許最高面溫度分為T1~T6

溫度組別允許最高表面溫度 ℃
T1450
T2300
T3200
T4135
T5100
T685

4、防爆級別
 EXdII□T□
 EXiaII□T□
 防護等級:IP65。

k型熱電偶工作原理

鎧裝K型熱電偶的工作原理與一般工業熱電偶一樣,基于Seeback(塞貝克)效應,即:如果由兩種不同成分的均質導體(熱電極)組成閉合回路,當兩端存在溫度梯度時,回路中就有電流通過,那么兩端之間就存在Seeback電勢-熱電勢(如下圖所示)

熱電偶測溫原理圖

K型熱電偶工作原理結構圖

熱電偶測溫原理視頻

WR系列熱電偶是本公司精心設計制造的新一代溫度傳感系列產品,熱電偶按分度號不同分為K型熱電偶、E型熱電偶等,本系列產品符合國際電工委員會(IEC)標準,技術性能可替代同類進口產品。廣泛用于航空、原子能、石油、化工冶金、電力、機械等現代化設備和離科技領域,也適合于進口成套設備的維修更換或輸出項目的成套配套以及技術改造項目的配套。

在化工廠,生產現場常伴有各種易燃、易爆等化學氣體、蒸汽,如果使用普通熱電偶非常不安全,極易引起環境氣體爆炸。因此,在這些場合必須使用防爆熱電偶作溫度傳感器,本廠生產的隔爆或本安型熱電偶產品適用在dIIBT4~dIICT6、ibIIBT4、iaIIBT4、iaIICT6溫度組別區間內具有爆炸性氣體危險的場所內。工業用防爆熱電偶是一種溫度傳感器,在化學工業自控系統中應用極廣,通過溫度傳感器,可將控制對象的溫度參數變為電信號,傳遞給顯示,記錄和調節儀表,對系統實行檢測,調節和控制。

紹興中儀生產的隔爆或本安型熱電偶技術性能符合JB/T9238-1999工業熱電偶技術條件GB/T16839-1997、GB/T16839.2-1997工業熱電偶分度表及允許誤差,同時產品均符合爆炸性環境用防爆電氣設備通用要求GB3836.1-2000、GB3836.2-2000標準,由國家級儀器儀表防爆安全監督檢驗站對產品圖樣、技術文件、樣機進行專門審定和批準,并發給防爆合格證。

防爆熱電偶必須使用本安補償導線,其分布參數控制范圍:總電感量≤2mH,電容量≤0.06,同時使用關聯設備ZYA系列安全柵。通常裝配熱電偶和顯示儀表、記錄儀表、電子計算等配套使用,直接測量各種生產過程中的0°C~1300°C范圍內液體、蒸汽和氣體介質以及固體表面溫度。裝配熱電偶通常是由熱電極絕緣材料保護管和接線盒等部件組成。其中兩熱電極一端焊接在一起,起感溫元件的作用,是熱電偶的核心部份。絕緣材料的作用是將兩熱電極隔離開,防止短路現像。保護管的作用是使熱電極和被測介質不直接接觸,此外還起固定和支撐熱電偶感溫元件的作用。接線盒的作用是用來固定連接感溫元件與外接導線,并保護感溫元件免受外界氣氛侵蝕。

微細鎧裝K型熱電偶圖

微細鎧裝K型熱電偶圖

應用行業

·K型熱電偶與顯示儀表等配套,在一定的使用范圍內對氣體、液體介質或固體表面溫度進行自動檢測或自動調節。
·鋼鐵和非鋼鐵工業:鼓風爐、轉爐、均熱爐、退火爐、電子爐、真空感應爐、連續澆鑄筒、熱處理器、壓榨機等。
·電力和氣體過程控制工業:過熱器、交流換熱器、鍋爐、冷水處理器、輸入輸出帶、渦輪、金屬軸承、氣體發生器、LPG、LNG等。
·電力和電子業:發動機、轉換和發生裝置、半導體、IC、LSI、光電管等的過程溫度控制。
·玻璃陶瓷工業:轉窯,隧道窯和其它各種玻璃、陶瓷、磚、流體預熱器、加熱窯等。
·化學和石化工業:各種氣體液體反應;注塑成型;裂化和矯正塔;合成紡織;制藥等。
·核能反應堆:反應器,水、氣體、燃料冷卻處理。
·造船工業:LNG和LPG的表面溫度,交流換熱器,柴油機等。
·飛機航空航天業:引擎排氣
·紡織食品業:纖維注射器、電鍍和滾動加熱器、染色、糖精制、肉類加工、面包、糖果、釀酒等過程的溫度控制。
·其他:等離子弧、電子束、激光、單晶體生長和其他物理特性方面的實驗室研究。

熱電偶構造

由于熱電偶的使用要求不同,其外形也往往存在很大差異,但是它們的基本結構大致相同,通常由鎧裝熱電偶元件,安裝固定裝置和接線盒等主要部件組成。

 1、熱電偶元件:它是由金屬套管,絕緣材料(一般為氧化鎂粉)和熱電偶線三者組合而成的堅實體。按測量端的結構形式,一般可分為絕緣K型熱電偶、接殼K型熱電偶、露端K型熱電偶和分離式絕緣型K型熱電偶供用戶選用,如果用戶沒有指明測量端的結構形式,則提供絕緣型或接殼形。
 2、安裝固定裝置,其結構形式可分為:無固定裝置K型熱電偶,固定卡套螺紋K型熱電偶、可動卡套螺紋K型熱電偶,固定卡套法蘭K型熱電偶,可動卡套法蘭K型熱電偶和外保護管式K型熱電偶等。
 3、接線方式:其結構可分為,瓷接線板K型熱電偶、簡易式K型熱電偶,同徑保護帽式,防濺接錢盒式K型熱電偶、防水接線盒式K型熱電偶、隔爆接線盒式K型熱電偶、插座式K型熱電偶、彈簧壓著式K型熱電偶、手柄式K型熱電偶、帶補償導線K型熱電偶等。

K型熱電偶的優點

1、測溫范圍大:本系列鎧裝熱電偶規格范圍大,品種規格齊全適用于各種測量組合,在-200℃~+1600℃溫度范圍內均能使用。
2、反應速度快:與裝配式熱電偶相比,因為外徑小熱容量少,故微小的溫度變化也能迅速反應,尤其是微細鎧裝熱電偶更為明顯。
3、安裝使用方便:K型熱電偶材料可在其外徑5倍的圓柱體上繞5圈并可在多處位置彎曲。
4、使用壽命長:K型熱電偶易引起熱電勢惡化,斷線等事故,而WR□K系列鎧裝K型熱電偶用氧化鎂絕緣,氣密性好、致密性好、致密度高,壽命長。
5、機械強度,耐壓性能好:在有強烈震動,低溫,高溫,腐蝕性等惡劣條件下均能安全使用。K型熱電偶最高可承受3*103Kpa/cm2的壓力。
6、K型熱電偶外徑尺寸范圍:鎧裝熱電偶外徑可提供Φ2.5~8mm,特殊要求的可以提供Φ12mm的產品。
7、鎧裝熱電偶的最大長度:鎧裝熱電偶的最大長度可達500m。
8、鎧裝熱電偶芯數:可提供單支芯(2芯),雙支芯(4芯)和三支芯(6芯)的各類鎧裝熱電偶。
9、裝配熱電偶裝配簡單,更換方便;
10、壓簧式感溫元件,抗振性能好;
11、K型熱電偶測溫范圍大;
12、機械強度高,耐壓性能好;
13、產品執行標準:IEC584 / IEC1515 / GB/T16839-1997 / JB/T5582-91
14、常溫絕緣電阻:熱電偶在環境溫度為20±15°C,相對濕度不大于80%,試驗電壓為500±50V(直流)電極與外套管之間的絕緣電阻>1000Ω.m。

K型熱電偶廠家

紹興中儀電子有限公司為了適應新世紀發展的需要,公司提出了"人才為本、創新為魂、協作為基、質量為根"企業方針和把公司辦成世界一流的自動化儀器儀表重要生產企業的發展目標,一貫堅持與國內外一線芯片廠商合作,精選可靠元器件,采用先進技術并引進大量校驗檢測設備,生產具有高性價比的K型熱電偶,真誠歡迎各界朋友、中外客商來我公司參觀、考察、指導,謀求共同發展。

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