Welcome to PMC Corporation

PRODUCT CODE: CK/NK

Our customers have grown to expect only the highest quality products from PMC A Division of R-SCC. We are continuously committed to meet the specific needs of industry and our customers. This construction was specifically developed to meet some of those needs.

This design incorporates quality, ruggedness, and compactness. Two layers of polyimide tape are wrapped around each conductor to insure full coverage even during flexing, individual conductors are color coded for quick identification of conductors by the addition of polyimide coating. The insulated pair is laid parallel and jacketed with a double wrapped, fused polyimide tape.

It is laminated with FEP resin which permits the tape (or film ) to be heat sealed. Polyimide tape in itself is infusible and has no melting point. Polyimide tape does not support combustion; even at extremely high temperatures, it decomposes slowly without visible burning, however, suggested upper continuous operating temperature is 500°F (260°C) due to the FEP lamination seal.

Polyimide tape is extremely tough. It has excellent abrasion, impact and cut through resistance, very high resistance to oxidative degradation, weathering, and all chemicals except strong bases. This construction offers excellent electrical properties: high dielectric strength and insulation resistance while maintaining a low dielectric constant and a dissipation factor which remains almost constant throughout a wide range of temperature ranges. Polyimide tape is resistant to radiation, with threshold damage occurring at 7 x 10⁹ a rads in a 2-Mev Van der Graf beam.

The thermocouple grade products are used to form temperature sensors and the extension grade products become the interconnecting link in the temperature sensing system.

You will find our qualified sales and engineering staff eager to assist in selecting a design to meet the requirements of your specific application.

Wire Grade	Gauge Size	Wire Type	Part Numbers
Wire Grade	Gauge Size	Wire Type	Type J	Type K	Type T	Type E
THERMOCOUPLE	20	Solid	J-CK/NK-20	K-CK/NK-20	T-CK/NK-20	E-CK/NK-20
THERMOCOUPLE	20 7/28	Stranded	J-CK/NK-20F	K-CK/NK-20F	T-CK/NK-20F	E-CK/NK-20F
THERMOCOUPLE	24	Solid	J-CK/NK-24	K-CK/NK-24	T-CK/NK-24	E-CK/NK-24
THERMOCOUPLE	30	Solid	J-CK/NK-30	K-CK/NK-30	T-CK/NK-30	E-CK/NK-30

Color Code & Initial Calibration Tolerances for Thermocouple Wire:

Thermocouple Type Color Code Initial Calibration Tolerances

Wire Alloys ANSI
Symbol +/-
Individual Temperature Range Standard
Limits Special
Limits

*Iron(+) vs. Constantan(-)
J White/Red +32°F (0°C) to +545°F (+285°C)
+545°F (285°C) to +1400°F (+750°C)
± 4°F (2.2°C)
± .75% ± 2°F (1.1°C)
± .4%

CHROMEL^®(+) vs.
ALUMEL^®(-)
K Yellow/Red -330°F -200°C) to -165°F (-110°C)
-165 °F (-110°C) to +32°F (0°C)
+32°F (0°C) to +545°F (+285°C)
+545°F (285°C) to +2300°F (+1250°C)
± 2%
± 4°F (2.2°C)
± 4°F (2.2°C)
± .75% ± 2°F (1.1°C)
± .4%

Copper(+) vs. Constantan(-)
T Blue/Red -330°F (-200°C) to -85°F (-65°C)
-85°F (-65°C) to +270°F (+130°C)
+270°F (130°C) to +660°F (+350°C)
± 1.5%
± 1.8°F (1°C)
± .75% ± .8%
± .9°F (.5°C)
± .4%

CHROMEL^®(+) vs. Constantan(-)
E Purple/Red -330°F -20(0°C) to -270°F (-170°C)
-270°F (-170°C) to +480°F (+250°C)
+480°F (+250°C) to +640°F (+340°C)
+640°F (+340°C) to +1600°F (+900°C)
± 1%
± 3°F (1.7°C)
± 3°F (1.7°C)
± .5% ± 1.8°F (1°C)
± 1.8°F (1°C)
± .4%
± .4%

Nicrosil(+) vs. Nisil(-)
N Orange/Red +32°F (0°C) to +545°F (+285°C)
+545°F (285°C) to +2300°F (+1250°C)
± 4°F (2.2°C)
± .75% ± 2°F (1.1°C)
± .4%

NOTE: Percent limits apply directly to temperature in °C units, but for °F equivalents are applied to the numbers of °F above or below the ice point (+32°F).
(i.e. Limit (°F) = (Temp. °F-32°F) x Percentage)

Thermocouple wire cannot be expected to meet the limits of error at temperatures below the ice point unless specified at time of purchase.

* Magnetic

CHROMEL^®and ALUMEL^®are registered trademarks of Hoskins Manufacturing Company.

CK/NK Physical Properties
Gauge Nominal
Insulation
Wall (in.) Nominal
Diameter
(in.) Approx.
Ship. Wt
(lbs) per M

Characteristics Insulation Jacket

Specific Gravity 1.42 1.42

20

20 7/28

24

30

.004

.004

.004

.004

.052 x .096

.058 x .108

.040 x .072

.030 x .052

9

10

4

2

Tensile Strength; psi (min) 23,500 23,500

Elongation; %(min) 70 70

Minimum Bend Radius 5 x O.D. 10 x O.D.

Abrasion Resistance Excellent Excellent

Cut Through Resistance Excellent Excellent

Moisture Resistance Excellent Excellent

Solder Iron Resistance Excellent Excellent

Service Temperature 500°F(260°C)
continuous 800°F (427°C)
single exposure 500°F(260°C)
continuous 800°F (427°C)
single exposure

Flame Test Non-flammable Non-flammable

Pricing Policy:	Shipments will be invoiced at PMC's prices in effect at time of shipment. Quotations are given with an escalation clause and prices, terms, and conditions are subject to change without prior notice. PMC will however, make every attempt to hold to current quoted prices. All prices are in United States currency, and shall be subject to correction for errors, unless otherwise stated in writing to PMC.
Reels, Spools & Coils:	All shipments, unless specified otherwise by PMC, are make on non-returnable reels, spools or coils in one continuous length.
Shortages & Returns:	All claims for shortage or incorrect material must be made within 10 days after receipt of the goods to which such claim pertains. Goods may only be returned for credit within 1 month of the date of authorization. Goods that are special in any way shall not be returned to PMC. Material returned for any reason, without written authorization will be refused a n returned at shipper's expense. A return request must be processed through our Manchester, N.H. sales office.
Tolerances:	Due to allowances in manufacturing processes for wire, cable and similar products, PMC-A Division of R-SCC reserves the right to ship variation of ± 10% from the quantity of such goods ordered. Physical tolerances shown are nominal. Shipping weights are an average of all types of conductors and are listed for estimation only. These weights can vary substantially due to different types of spools, reels and/or conductors. The material contained in the document is presented in good faith and believed to be reliable and accurate. However, because testing conditions may vary and material quality or information that may be provided in whole or part by others may be beyond our control, no warranty, expressed or implied, is given PMC-A Division of R-SCC can assume no liability for results obtained or damages incurred through the application of the data tests presented. Note: PMC-A Division of R-SCC reserves the right to substitute an equal product on all registered trademark items.

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