Table 4-1: Thermocouple Types In The Model 1140A - Ectron 1140A Instruction Manual

Table 4-1: Thermocouple Types in the Model 1140A

Type* Positive Wire
B-MN175
70% Pt – 30% Rh Alloy
[B-MN125]
C 95% W – 5% Re Alloy
D 97% W – 3% Re Alloy
E-MN175 90% Ni – 10% Cr Alloy
[E-MN125] (Chromel)
G 100% W
J-MN175
100% Fe
[J-MN125]
K-MN175 90% Ni – 10% Cr Alloy
[K-MN125] (Chromel)
N-MN175 84% Ni – 14% to 14.4%
[N-MN161] Cr – 1.3% to 1.6% Si Alloy
PLII
Proprietary Platinum Alloy
(Platinel II™)
R-MN175
87% Pt – 13% Rh Alloy
[R-MN125]
S-MN175
90% Pt – 10% Rh Alloy
[S-MN125]
T-MN175
100% Cu
[T-MN125]
* MN175 is NIST Monograph 175, which is based on ITS-90. When using IPTS-68, the thermocouple types are
those shown in [brackets], referencing NIST Monograph 125 and Monograph 161.
** The upper temperature limits for Types R and S are slightly lower in NIST Monograph 125 than in NIST
Monograph 175.
Negative Wire
94% Pt – 6% Rh Alloy
74% W – 26% Re Alloy
75% W – 25% Re Alloy
55% Cu – 45% Ni Alloy
(Constantan)
74% W – 26% Re Alloy
55% Cu – 45% Ni Alloy
(Constantan)
96% Ni – 2% Mn –
2% Al Alloy (Alumel)
95% Ni – 4.2% to 4.6% Cr
– 0.5% to 1.5% Mg Alloy
Proprietary Platinum Alloy
100% Pt
100% Pt
55% Cu – 45% Ni Alloy
(Constantan)
4-5
Temperature Range
250°C to 1820°C
482°F to 3308°F
523.15 K to 2093.15 K
22.33°R to 3767.67°R
0°C to 2315.56°C
32°F to 4200.01°F
273.15 K to 2588.71 K
491.67°R to 4659.68°R
0°C to 2320°C
32°F to 4208°F
273.15 K to 2593.15 K
491.67°R to 4667.67°R
−270°C to 1000°C
−454°F to 1832°F
3.15 K to 1273.15 K
5.67°R to 2291.67°R
0°C to 2315.56°C
32°F to 4200.01°F
273.15 K to 2588.71 K
491.67°R to 4659.68°R
−210°C to 1200°C
−346°F to 2192°F
63.15 K to 1473.15 K
113.67°R to 2651.67°R
−270°C to 1372°C
−454°F to 2501.6°F
3.15 K to 1645.15 K
5.67°R to 2961.27°R
−270°C to 1300°C
−454°F to 2372°F
3.15 K to 1573.15 K
5.67°R to 2831.67°R
0°C to 1395°C
32°F to 2543°F
273.15 K to 1668.15 K
459.67°R to 3002.67°R
−50°C to 1768.1°C [1767.6°C]**
−58°F to 3214.58°F [3213.68°F]
223.15 K to 2041.25 K [2040.75K]
401.67°R to 3674.25°R [3673.35°R]
−50°C to 1768.1°C [1767.6°C]**
−58°F to 3214.58°F [3213.68°F]
223.15 K to 2041.25 K [2040.75K]
401.67°R to 3674.25°R [3673.35°R]
−270°C to 400°C
−454°F to 752°F
3.15 K to 673.15 K
5.67°R to 1211.67°R
Operation