Cat16 R2

Thermocouple and Extension Wire - Gauge Temperature Limits, Insulation Characteristics

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 -

8

11 14 20 24 28 30 36

38 40

Gauge

.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

Inches

Type

Wire Materials

mm

Platinum 30% Rhodium vs. Platinum 6% Rhodium

1700°C 3100°F 460°C 860°F 370°C 700°F 870°C 1600°F 870°C 1600°F 1480°C 2700°F 1480°C 2700°F

B

Ni, 10% Cr vs. Constantan

870°C 1600°F 760°C 1400°F

650°C 1200°F 590°C 1100°F 1090°C 2000°F 1090°C 2000°F

540°C 1000°F

430°C 800°F 370°C 700°F 870°C 1600°F 870°C 1600°F 1300°C 2400°F 1300°C 2400°F

370°C 700°F 320°C 600°F 760°C 1400°F 760°C 1400°F 1300°C 2400°F 1300°C 2400°F

300°C 570°F 300°C 570°F 750°C 1380°F

300°C 570°F 300°C 570°F 750°C 1380°F

E

Iron vs. Constantan

480°C 900°F

J

Ni, 105 Cr vs. Ni, 5% Al, Si 1260°C 2300°F

1090°C 2000°F

980°C 1800°F 980°C 1800°F

K

Ni, 14% Cr vs. Ni, 4.5% Si, .1% Mg

1260°C 2300°F

N

Platinum vs. Platinum 13% Rhodium Platinum vs. Platinum 10% Rhodium

1200°C 2200°F 1200°C 2200°F

R

S

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

T

Tungsten, 5% Rhenium vs. Tungsten, 26% Rhenium

2310°C 4200°F

C

Insulation Characteristics -

Maxi- mum

Maximum Continuous Temp. °F

Maxi- mum

Maximum Continuous Temp. °C

Abrasion Resistance

Moisture Resistance

Single Use °C

Single Use °F

Color Coding

Type

Wire Insulation Type

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

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