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Thermocouple Reference Tables - Type J  300 to 940°F

Revised Thermocouple Reference Tables

TYPE J


NONE ESTABLISHED
Thermocouple Grade

Iron
vs.
Copper - Nickel

Extension Grade


MAXIMUM TEMPERATURE RANGE
Thermocouple Grade
32 to 1382°F
0 to 750°C
Extension Grade
32 to 392°F
0 to 200°C

LIMITS OF
ERROR
(whichever is Greater)
Standard: 2.2°C or 0.75%
Special: 1.1°C or 0.4%

COMMENTS, BARE WIRE ENVIRONMENT:
Reducing, Vacuum, Inert; Limited Use in Oxidizing at High Temperature; Not Recommended for Low Temperatures

TEMPERATURE
IN DEGREES  °F

REFERENCE JUNCTION
AT 32°F
░F012345678910░F
Thermoelectric Voltage in mV
3007.9497.9798.0108.0418.0718.1028.1338.1638.1948.2258.255300
3108.2558.2868.3178.3478.3788.4098.4398.4708.5018.5328.562310
3208.5628.5938.6248.6548.6858.7168.7478.7778.8088.8398.869320
3308.8698.9008.9318.9628.9929.0239.0549.0859.1159.1469.177330
3409.1779.2089.2389.2699.3009.3319.3629.3929.4239.4549.485340
3509.4859.5159.5469.5779.6089.6399.6699.7009.7319.7629.793350
3609.7939.8239.8549.8859.9169.9479.97710.00810.03910.07010.101360
37010.10110.13110.16210.19310.22410.25510.28510.31610.34710.37810.409370
38010.40910.44010.47010.50110.53210.56310.59410.62510.65510.68610.717380
39010.71710.74810.77910.81010.84010.87110.90210.93310.96410.99511.025390
40011.02511.05611.08711.11811.14911.18011.21111.24111.27211.30311.334400
41011.33411.36511.39611.42611.45711.48811.51911.55011.58111.61211.642410
42011.64211.67311.70411.73511.76611.79711.82811.85811.88911.92011.951420
43011.95111.98212.01312.04412.07412.10512.13612.16712.19812.22912.260430
44012.26012.29012.32112.35212.38312.41412.44512.47612.50612.53712.568440
45012.56812.59912.63012.66112.69112.72212.75312.78412.81512.84612.877450
46012.87712.90712.93812.96913.00013.03113.06213.09313.12313.15413.185460
47013.18513.21613.24713.27813.30813.33913.37013.40113.43213.46313.494470
48013.49413.52413.55513.58613.61713.64813.67913.70913.74013.77113.802480
49013.80213.83313.86413.89413.92513.95613.98714.01814.04914.07914.110490
50014.11014.14114.17214.20314.23314.26414.29514.32614.35714.38814.418500
51014.41814.44914.48014.51114.54214.57314.60314.63414.66514.69614.727510
52014.72714.75714.78814.81914.85014.88114.91114.94214.97315.00415.035520
53015.03515.06515.09615.12715.15815.18915.21915.25015.28115.31215.343530
54015.34315.37315.40415.43515.46615.49615.52715.55815.58915.62015.650540
55015.65015.68115.71215.74315.77315.80415.83515.86615.89715.92715.958550
56015.95815.98916.02016.05016.08116.11216.14316.17316.20416.23516.266560
57016.26616.29616.32716.35816.38916.41916.45016.48116.51216.54216.573570
58016.57316.60416.63516.66516.69616.72716.75816.78816.81916.85016.881580
59016.88116.91116.94216.97317.00317.03417.06517.09617.12617.15717.188590
60017.18817.21917.24917.28017.31117.34117.37217.40317.43417.46417.495600
61017.49517.52617.55617.58717.61817.64917.67917.71017.74117.77117.802610
62017.80217.83317.86317.89417.92517.95517.98618.01718.04818.07818.109620
63018.10918.14018.17018.20118.23218.26218.29318.32418.35418.38518.416630
64018.41618.44618.47718.50818.53818.56918.60018.63018.66118.69218.722640
65018.72218.75318.78418.81418.84518.87618.90618.93718.96818.99819.029650
66019.02919.06019.09019.12119.15219.18219.21319.24419.27419.30519.336660
67019.33619.36619.39719.42819.45819.48919.52019.55019.58119.61219.642670
68019.64219.67319.70419.73419.76519.79519.82619.85719.88719.91819.949680
69019.94919.97920.01020.04120.07120.10220.13220.16320.19420.22420.255690
70020.25520.28620.31620.34720.37820.40820.43920.46920.50020.53120.561700
71020.56120.59220.62320.65320.68420.71520.74520.77620.80620.83720.868710
72020.86820.89820.92920.96020.99021.02121.05221.08221.11321.14321.174720
73021.17421.20521.23521.26621.29721.32721.35821.38921.41921.45021.480730
74021.48021.51121.54221.57221.60321.63421.66421.69521.72621.75621.787740
75021.78721.81721.84821.87921.90921.94021.97122.00122.03222.06322.093750
76022.09322.12422.15422.18522.21622.24622.27722.30822.33822.36922.400760
77022.40022.43022.46122.49222.52222.55322.58422.61422.64522.67622.706770
78022.70622.73722.76822.79822.82922.86022.89022.92122.95222.98223.013780
79023.01323.04423.07423.10523.13623.16623.19723.22823.25823.28923.320790
80023.32023.35023.38123.41223.44223.47323.50423.53523.56523.59623.627800
81023.62723.65723.68823.71923.74923.78023.81123.84223.87223.90323.934810
82023.93423.96423.99524.02624.05724.08724.11824.14924.18024.21024.241820
83024.24124.27224.30324.33324.36424.39524.42624.45624.48724.51824.549830
84024.54924.57924.61024.64124.67224.70224.73324.76424.79524.82624.856840
85024.85624.88724.91824.94924.97925.01025.04125.07225.10325.13425.164850
86025.16425.19525.22625.25725.28825.31825.34925.38025.41125.44225.473860
87025.47325.50425.53425.56525.59625.62725.65825.68925.72025.75025.781870
88025.78125.81225.84325.87425.90525.93625.96725.99826.02826.05926.090880
89026.09026.12126.15226.18326.21426.24526.27626.30726.33826.36926.400890
90026.40026.43126.46226.49326.52426.55526.58626.61726.64826.67926.710900
91026.71026.74126.77226.80326.83426.86526.89626.92726.95826.98927.020910
92027.02027.05127.08227.11327.14427.17527.20627.23727.26827.29927.330920
93027.33027.36227.39327.42427.45527.48627.51727.54827.57927.61027.642930
94027.64227.67327.70427.73527.76627.79727.82927.86027.89127.92227.953940
░F012345678910░F

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