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The Arklay S. Richards Co., Inc.
always stocks a wide variety of thermocouple wire, which covers a service temperature range from
-123
to
1093°C
(
-190 to 2000°F
). This enables you to select the most suitable and economical wire for your application. The
maximum service temperature is based on the lower limit of the wire gauge, or insulation characteristics. Refer to the two charts below. All
Richards
thermocouple wire are carefully selected and match to conform to
ANSI MC 96.1
STANDARDS. The testing for accuracy
and color coding is completed here in our own labortories. Refer to our limits of error table in this catalog. Special premium grade wire is
available upon request. Premium grade thermocouple wire can be designated by adding a double type letter to the catalog number. An
example of a catalog number for premium grade thermocouple wire would be
20KK-HG.
Temperature Limits for Wire Gauges -
Insulation Characteristics -
Gauge
8
11
14
20
24
28
30
36
38
40
Type
Inches
Wire Materials
mm
.128
3.25
.091
2.31
.064
1.63
.032
0.81
.020
0.51
.013
0.33
.010
0.25
.005
0.13
.004
0.10
.003
0.08
B
Platinum 30% Rhodium vs.
Platinum 6% Rhodium
1700°C
3100°F
E
Ni, 10% Cr vs. Constantan
870°C
1600°F
650°C
1200°F
540°C
1000°F
460°C
860°F
430°C
800°F
370°C
700°F
300°C
570°F
300°C
570°F
J
Iron vs. Constantan
760°C
1400°F
590°C
1100°F
480°C
900°F
370°C
700°F
370°C
700°F
320°C
600°F
300°C
570°F
300°C
570°F
K
Ni, 105 Cr vs. Ni, 5% Al, Si 1260°C
2300°F
1090°C
2000°F
1090°C
2000°F
980°C
1800°F
870°C
1600°F
870°C
1600°F
760°C
1400°F
750°C
1380°F
750°C
1380°F
N
Ni, 14% Cr vs.
Ni, 4.5% Si, .1% Mg
1260°C
2300°F
1090°C
2000°F
980°C
1800°F
870°C
1600°F
870°C
1600°F
760°C
1400°F
R
Platinum vs.
Platinum 13% Rhodium
1480°C
2700°F
1300°C
2400°F
1300°C
2400°F
1200°C
2200°F
S
Platinum vs.
Platinum 10% Rhodium
1480°C
2700°F
1300°C
2400°F
1300°C
2400°F
1200°C
2200°F
T
Copper vs. Constantan
370°C
700°F
260°C
500°F
200°C
400°F
200°C
400°F
150°C
302°F
150°C
302°F
150°C
302°F
C
Tungsten, 5% Rhenium vs.
Tungsten, 26% Rhenium
2310°C
4200°F
Type
Wire Insulation Type
Abrasion
Resistance
Moisture
Resistance
Maximum
Continuous
Temp. °C
Maximum
Single
Use °C
Maximum
Continuous
Temp. °F
Maximum
Single
Use °F
Color
Coding
CF
Ceramic Fiber
Poor
Poor
1200°C
1427°C
2200°F
2600°F
HG
Fiber Glass, High Temperature
Fair
Poor
704°C
870°C
1300°F
1600°F
GG
Fiber Glass, Varnish Impregnated
Fair
Fair
-23 to 480°C
540°C
-10 to 900°F
1000°F
Yes
KK
Kapton (fused tape)
Excellent
Excellent -240 to 204°C
316°C
-400 to 400°F
600°F
NN
Nylon
Excellent
Excellent
-40 to 150°C
—-
-40 to 300°F
—-
Yes
PP
Polyvinyl, PVP (extruded)
Good
Excellent -17.8 to 105°C
—-
0 to 220°F
—-
Yes
TT-ex
Teflon, FEP (extruded)
Very Good
Excellent
204°C
260°C
400°F
500°F
Yes
TT
Teflon, TFE (fused tape)
Very Good
Excellent
260°C
316°C
500°F
600°F
Yes
TT-PFA
Teflon , PFA (fused tape)
Very Good
Excellent
260°C
316°C
500°F
600°F
Yes
TT-ex-PFA
Teflon, PFA (extruded)
Very Good
Excellent
260°C
316°C
500°F
600°F
Yes
VS
Vitreous Silica Fiber
Poor
Poor
0 to 980°C
1093°C
32 to 1800°F
2000°F
Yes
Thermocouple and Extension Wire -
Gauge Temperature Limits, Insulation Characteristics
Page 112
Phone: 617.527.4385 Fax: 617.964.3746 Email:
sales@asrichards.com