Technical Information

Revised Thermocouple Reference Tables

TYPE
K
Reference Tables N.I.S.T.

Monograph 175

Revised to ITS-90

°F

Nickel-Chromium
vs.
Nickel-Aluminum

MAXIMUM TEMPERATURE RANGE
Thermocouple Grade

– 328 to 2282°F
– 200 to 1250°C
Extension Grade
32 to 392°F
0 to 200°C
LIMITS OF ERROR
(whichever is greater)
Standard: 2.2°C or 0.75% Above 0°C
2.2°C or 2.0% Below 0°C
Special: 1.1°C or 0.4%
COMMENTS, BARE WIRE ENVIRONMENT:
Clean Oxidizing and Inert; Limited Use in
Vacuum or Reducing; Wide Temperature
Range; Most Popular Calibration
TEMPERATURE IN DEGREES °C
REFERENCE JUNCTION AT 0°C

Thermoelectric Voltage in Millivolts

°F -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 °F
-260-6.458-6.457-6.456-6.455-6.453-6.452-6.450-6.448-6.446-6.444-6.441-260
-250-6.441-6.438-6.435-6.432-6.429-6.425-6.421-6.417-6.413-6.408-6.404-250
-240-6.404-6.399-6.393-6.388-6.382-6.377-6.370-6.364-6.358-6.351-6.344-240
-230-6.344-6.337-6.329-6.322-6.314-6.306-6.297-6.289-6.280-6.271-6.262-230
-220-6.262-6.252-6.243-6.233-6.223-6.213-6.202-6.192-6.181-6.170-6.158-220
-210-6.158-6.147-6.135-6.123-6.111-6.099-6.087-6.074-6.061-6.048-6.035-210
-200-6.035-6.021-6.007-5.994-5.980-5.965-5.951-5.936-5.922-5.907-5.891-200
-190-5.891-5.876-5.861-5.845-5.829-5.813-5.797-5.780-5.763-5.747-5.730-190
-180-5.730-5.713-5.695-5.678-5.660-5.642-5.624-5.606-5.588-5.569-5.550-180
-170-5.550-5.531-5.512-5.493-5.474-5.454-5.435-5.415-5.395-5.374-5.354-170
-160-5.354-5.333-5.313-5.292-5.271-5.250-5.228-5.207-5.185-5.163-5.141-160
-150-5.141-5.119-5.097-5.074-5.052-5.029-5.006-4.983-4.960-4.936-4.913-150
-140-4.913-4.889-4.865-4.841-4.817-4.793-4.768-4.744-4.719-4.694-4.669-140
-130-4.669-4.644-4.618-4.593-4.567-4.542-4.516-4.490-4.463-4.437-4.411-130
-120-4.411-4.384-4.357-4.330-4.303-4.276-4.249-4.221-4.194-4.166-4.138-120
-110-4.138-4.110-4.082-4.054-4.025-3.997-3.968-3.939-3.911-3.882-3.852-110
-100-3.852-3.823-3.794-3.764-3.734-3.705-3.675-3.645-3.614-3.584-3.554-100
-90-3.554-3.523-3.492-3.462-3.431-3.400-3.368-3.337-3.306-3.274-3.243-90
-80-3.243-3.211-3.179-3.147-3.115-3.083-3.050-3.018-2.986-2.953-2.920-80
-70-2.920-2.887-2.854-2.821-2.788-2.755-2.721-2.688-2.654-2.620-2.587-70
-60-2.587-2.553-2.519-2.485-2.450-2.416-2.382-2.347-2.312-2.278-2.243-60
-50-2.243-2.208-2.173-2.138-2.103-2.067-2.032-1.996-1.961-1.925-1.889-50
-40-1.889-1.854-1.818-1.782-1.745-1.709-1.673-1.637-1.600-1.564-1.527-40
-30-1.527-1.490-1.453-1.417-1.380-1.343-1.305-1.268-1.231-1.194-1.156-30
-20-1.156-1.119-1.081-1.043-1.006-0.968-0.930-0.892-0.854-0.816-0.778-20
-10-0.778-0.739-0.701-0.663-0.624-0.586-0.547-0.508-0.470-0.431-0.392-10
0-0.392-0.353-0.314-0.275-0.236-0.197-0.157-0.118-0.079-0.0390.0000
°F -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 °F

°F 0 1 2 3 4 5 6 7 8 9 10 °F
00.0000.0390.0790.1190.1580.1980.2380.2770.3170.3570.3970
100.3970.4370.4770.5170.5570.5970.6370.6770.7180.7580.79810
200.7980.8380.8790.9190.9601.0001.0411.0811.1221.1631.20320
301.2031.2441.2851.3261.3661.4071.4481.4891.5301.5711.61230
401.6121.6531.6941.7351.7761.8171.8581.8991.9411.9822.02340
502.0232.0642.1062.1472.1882.2302.2712.3122.3542.3952.43650
602.4362.4782.5192.5612.6022.6442.6852.7272.7682.8102.85160
702.8512.8932.9342.9763.0173.0593.1003.1423.1843.2253.26770
803.2673.3083.3503.3913.4333.4743.5163.5573.5993.6403.68280
903.6823.7233.7653.8063.8483.8893.9313.9724.0134.0554.09690
1004.0964.1384.1794.2204.2624.3034.3444.3854.4274.4684.509100
1104.5094.5504.5914.6334.6744.7154.7564.7974.8384.8794.920110
1204.9204.9615.0025.0435.0845.1245.1655.2065.2475.2885.328120
1305.3285.3695.4105.4505.4915.5325.5725.6135.6535.6945.735130
1405.7355.7755.8155.8565.8965.9375.9776.0176.0586.0986.138140
1506.1386.1796.2196.2596.2996.3396.3806.4206.4606.5006.540150
1606.5406.5806.6206.6606.7016.7416.7816.8216.8616.9016.941160
1706.9416.9817.0217.0607.1007.1407.1807.2207.2607.3007.340170
1807.3407.3807.4207.4607.5007.5407.5797.6197.6597.6997.739180
1907.7397.7797.8197.8597.8997.9397.9798.0198.0598.0998.138190
2008.1388.1788.2188.2588.2988.3388.3788.4188.4588.4998.539200
2108.5398.5798.6198.6598.6998.7398.7798.8198.8608.9008.940210
2208.9408.9809.0209.0619.1019.1419.1819.2229.2629.3029.343220
2309.3439.3839.4239.4649.5049.5459.5859.6269.6669.7079.747230
2409.7479.7889.8289.8699.9099.9509.99110.03110.07210.11310.153240
25010.15310.19410.23510.27610.31610.35710.39810.43910.48010.52010.561250
26010.56110.60210.64310.68410.72510.76610.80710.84810.88910.93010.971260
27010.97111.01211.05311.09411.13511.17611.21711.25911.30011.34111.382270
28011.38211.42311.46511.50611.54711.58811.63011.67111.71211.75311.795280
29011.79511.83611.87711.91911.96012.00112.04312.08412.12612.16712.209290
30012.20912.25012.29112.33312.37412.41612.45712.49912.54012.58212.624300
31012.62412.66512.70712.74812.79012.83112.87312.91512.95612.99813.040310
32013.04013.08113.12313.16513.20613.24813.29013.33113.37313.41513.457320
33013.45713.49813.54013.58213.62413.66513.70713.74913.79113.83313.874330
34013.87413.91613.95814.00014.04214.08414.12614.16714.20914.25114.293340
35014.29314.33514.37714.41914.46114.50314.54514.58714.62914.67114.713350
36014.71314.75514.79714.83914.88114.92314.96515.00715.04915.09115.133360
37015.13315.17515.21715.25915.30115.34315.38515.42715.46915.51115.554370
38015.55415.59615.63815.68015.72215.76415.80615.84915.89115.93315.975380
39015.97516.01716.05916.10216.14416.18616.22816.27016.31316.35516.397390
40016.39716.43916.48216.52416.56616.60816.65116.69316.73516.77816.820400
41016.82016.86216.90416.94716.98917.03117.07417.11617.15817.20117.243410
42017.24317.28517.32817.37017.41317.45517.49717.54017.58217.62417.667420
43017.66717.70917.75217.79417.83717.87917.92117.96418.00618.04918.091430
44018.09118.13418.17618.21818.26118.30318.34618.38818.43118.47318.516440
45018.51618.55818.60118.64318.68618.72818.77118.81318.85618.89818.941450
46018.94118.98319.02619.06819.11119.15419.19619.23919.28119.32419.366460
47019.36619.40919.45119.49419.53719.57919.62219.66419.70719.75019.792470
48019.79219.83519.87719.92019.96220.00520.04820.09020.13320.17520.218480
49020.21820.26120.30320.34620.38920.43120.47420.51620.55920.60220.644490
50020.64420.68720.73020.77220.81520.85720.90020.94320.98521.02821.071500
51021.07121.11321.15621.19921.24121.28421.32621.36921.41221.45421.497510
52021.49721.54021.58221.62521.66821.71021.75321.79621.83821.88121.924520
53021.92421.96622.00922.05222.09422.13722.17922.22222.26522.30722.350530
54022.35022.39322.43522.47822.52122.56322.60622.64922.69122.73422.776540
55022.77622.81922.86222.90422.94722.99023.03223.07523.11723.16023.203550
56023.20323.24523.28823.33123.37323.41623.45823.50123.54423.58623.629560
57023.62923.67123.71423.75723.79923.84223.88423.92723.97024.01224.055570
58024.05524.09724.14024.18224.22524.26724.31024.35324.39524.43824.480580
59024.48024.52324.56524.60824.65024.69324.73524.77824.82024.86324.905590
60024.90524.94824.99025.03325.07525.11825.16025.20325.24525.28825.330600
61025.33025.37325.41525.45825.50025.54325.58525.62725.67025.71225.755610
62025.75525.79725.84025.88225.92425.96726.00926.05226.09426.13626.179620
63026.17926.22126.26326.30626.34826.39026.43326.47526.51726.56026.602630
64026.60226.64426.68726.72926.77126.81426.85626.89826.94026.98327.025640
65027.02527.06727.10927.15227.19427.23627.27827.32027.36327.40527.447650
66027.44727.48927.53127.57427.61627.65827.70027.74227.78427.82627.869660
67027.86927.91127.95327.99528.03728.07928.12128.16328.20528.24728.289670
68028.28928.33228.37428.41628.45828.50028.54228.58428.62628.66828.710680
69028.71028.75228.79428.83528.87728.91928.96129.00329.04529.08729.129690
70029.12929.17129.21329.25529.29729.33829.38029.42229.46429.50629.548700
71029.54829.58929.63129.67329.71529.75729.79829.84029.88229.92429.965710
72029.96530.00730.04930.09030.13230.17430.21630.25730.29930.34130.382720
73030.38230.42430.46630.50730.54930.59030.63230.67430.71530.75730.798730
74030.79830.84030.88130.92330.96431.00631.04731.08931.13031.17231.213740
75031.21331.25531.29631.33831.37931.42131.46231.50431.54531.58631.628750
76031.62831.66931.71031.75231.79331.83431.87631.91731.95832.00032.041760
77032.04132.08232.12432.16532.20632.24732.28932.33032.37132.41232.453770
78032.45332.49532.53632.57732.61832.65932.70032.74232.78332.82432.865780
79032.86532.90632.94732.98833.02933.07033.11133.15233.19333.23433.275790
80033.27533.31633.35733.39833.43933.48033.52133.56233.60333.64433.685800
81033.68533.72633.76733.80833.84833.88933.93033.97134.01234.05334.093810
82034.09334.13434.17534.21634.25734.29734.33834.37934.42034.46034.501820
83034.50134.54234.58234.62334.66434.70434.74534.78634.82634.86734.908830
84034.90834.94834.98935.02935.07035.11035.15135.19235.23235.27335.313840
85035.31335.35435.39435.43535.47535.51635.55635.59635.63735.67735.718850
86035.71835.75835.79835.83935.87935.92035.96036.00036.04136.08136.121860
87036.12136.16236.20236.24236.28236.32336.36336.40336.44336.48436.524870
88036.52436.56436.60436.64436.68536.72536.76536.80536.84536.88536.925880
89036.92536.96537.00637.04637.08637.12637.16637.20637.24637.28637.326890
90037.32637.36637.40637.44637.48637.52637.56637.60637.64637.68637.725900
91037.72537.76537.80537.84537.88537.92537.96538.00538.04438.08438.124910
92038.12438.16438.20438.24338.28338.32338.36338.40238.44238.48238.522920
93038.52238.56138.60138.64138.68038.72038.76038.79938.83938.87838.918930
94038.91838.95838.99739.03739.07639.11639.15539.19539.23539.27439.314940
95039.31439.35339.39339.43239.47139.51139.55039.59039.62939.66939.708950
96039.70839.74739.78739.82639.86639.90539.94439.98440.02340.06240.101960
97040.10140.14140.18040.21940.25940.29840.33740.37640.41540.45540.494970
98040.49440.53340.57240.61140.65140.69040.72940.76840.80740.84640.885980
99040.88540.92440.96341.00241.04241.08141.12041.15941.19841.23741.276990
100041.27641.31541.35441.39341.43141.47041.50941.54841.58741.62641.6651000
101041.66541.70441.74341.78141.82041.85941.89841.93741.97642.01442.0531010
102042.05342.09242.13142.16942.20842.24742.28642.32442.36342.40242.4401020
103042.44042.47942.51842.55642.59542.63342.67242.71142.74942.78842.8261030
104042.82642.86542.90342.94242.98043.01943.05743.09643.13443.17343.2111040
105043.21143.25043.28843.32743.36543.40343.44243.48043.51843.55743.5951050
106043.59543.63343.67243.71043.74843.78743.82543.86343.90143.94043.9781060
107043.97844.01644.05444.09244.13044.16944.20744.24544.28344.32144.3591070
108044.35944.39744.43544.47344.51244.55044.58844.62644.66444.70244.7401080
109044.74044.77844.81644.85344.89144.92944.96745.00545.04345.08145.1191090
110045.11945.15745.19445.23245.27045.30845.34645.38345.42145.45945.4971100
111045.49745.53445.57245.61045.64745.68545.72345.76045.79845.83645.8731110
112045.87345.91145.94845.98646.02446.06146.09946.13646.17446.21146.2491120
113046.24946.28646.32446.36146.39846.43646.47346.51146.54846.58546.6231130
114046.62346.66046.69746.73546.77246.80946.84746.88446.92146.95846.9951140
115046.99547.03347.07047.10747.14447.18147.21847.25647.29347.33047.3671150
116047.36747.40447.44147.47847.51547.55247.58947.62647.66347.70047.7371160
117047.73747.77447.81147.84847.88447.92147.95847.99548.03248.06948.1051170
118048.10548.14248.17948.21648.25248.28948.32648.36348.39948.43648.4731180
119048.47348.50948.54648.58248.61948.65648.69248.72948.76548.80248.8381190
120048.83848.87548.91148.94848.98449.02149.05749.09349.13049.16649.2021200
121049.20249.23949.27549.31149.34849.38449.42049.45649.49349.52949.5651210
122049.56549.60149.63749.67449.71049.74649.78249.81849.85449.89049.9261220
123049.92649.96249.99850.03450.07050.10650.14250.17850.21450.25050.2861230
124050.28650.32250.35850.39350.42950.46550.50150.53750.57250.60850.6441240
125050.64450.68050.71550.75150.78750.82250.85850.89450.92950.96551.0001250
126051.00051.03651.07151.10751.14251.17851.21351.24951.28451.32051.3551260
127051.35551.39151.42651.46151.49751.53251.56751.60351.63851.67351.7081270
128051.70851.74451.77951.81451.84951.88551.92051.95551.99052.02552.0601280
129052.06052.09552.13052.16552.20052.23552.27052.30552.34052.37552.4101290
130052.41052.44552.48052.51552.55052.58552.62052.65452.68952.72452.7591300
131052.75952.79452.82852.86352.89852.93252.96753.00253.03753.07153.1061310
132053.10653.14053.17553.21053.24453.27953.31353.34853.38253.41753.4511320
133053.45153.48653.52053.55553.58953.62353.65853.69253.72753.76153.7951330
134053.79553.83053.86453.89853.93253.96754.00154.03554.06954.10454.1381340
135054.13854.17254.20654.24054.27454.30854.34354.37754.41154.44554.4791350
136054.47954.51354.54754.58154.61554.64954.68354.71754.75154.78554.8191360
137054.81954.85254.8861370
°F 0 1 2 3 4 5 6 7 8 9 10 °F
INDUSTRY-NET-PREFERRED-SUPPLIER-LOGOINDUSTRY-NET-PREFERRED-SUPPLIER-LOGO
INDUSTRY-NET-PREFERRED-SUPPLIER-LOGOINDUSTRY-NET-PREFERRED-SUPPLIER-LOGO
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