Wire, Cable and Tubing Solutions from Alpha Wire Company
   








  


THERMOCOUPLE WIRE AND CABLE

INSULATION AND JACKETS
Alpha's Standard line of thermocouple wire and cable is available in a wide range of insulating and jacketing materials to suit the most demanding environmental conditions.
Chart (2) gives the most popular combinations of materials and the characteristics of each.  Special situations may require other types of materials.  Alpha's technical services team is available to help in determining the exact choice for your application.

GENERAL CHARACTERISTICS OF THERMOCOUPLE WIRE INSULATIONS CHART NO. 2
Insulation Jacket Temp. °C (°F)
Cont.            Inter.		 Mechanical Properties  
Flame Abrasion
Res. 		Flexibility
Chemical Properties
(Resistance to)
Solvents Acids Bases Moisture
Nylon Nylon 120 (248) --- P E G G P E F/P
PVC PVC 105 (221) --- G G G F G G G
Teflon (FEP)** Teflon (FEP)** 205 (400) --- E E G E E E E
Glass Braid
with Silicone		 Glass Braid
with Silicone		 482 (900) 538 (1000) E F/G G E E E F/G
(to 204°C)
Refrasil* Refrasil* 871 (1600) 982 (1800) E P F/G E E E P
Kapton** Kapton** 316 (600) 427 (800) E E E E E E E
Teflon
(TFE-TAPE)**		 Teflon
(TFE-TAPE)**		 260 (500) --- E E E E E E E
PVC Nylon 105 (221) --- G E G F P E G
Tefzel** Tefzel** 150 (302) --- E E E E E E E
Ceramic Fiber Ceramic Fiber 1427 (2600) --- E G E G/E F/G G/E G/E
High Temperature
Glass Braid
with Silicone		 High Temperature
Glass Braid
with Silicone		 649 (1200) --- E F/G G E E E F/G
(to 204°C)
*Trademark, H.I. Thompson Co.
**Registered trademark of E.I. DuPont Co.		 E = Excellent      G = Good     F = Fair      P = Poor

ANSI / ISA COMPLIANCE
The key to precise temperature measurement is consistency.  Establishing very exacting standards of calibration, ANSI, the American National Standards Institute and ISA, Instrument Society of America have been able to govern the specification and manufacture of thermocouple and extension wire and cable.   These standards establish quality control techniques and require certification by the manufacturer to ensure performance.
Alpha provides the entire product line with full compliance to these standards.  ANSI color coding is used throughout enabling positive identification and installation in complete conformance to governing specifications.

ISA / ANSI COLOR CODE
Type
Grade Extension
Positive Wires Negative Wires Overall Jacket
Grade Tracer Extension
J JX Iron White Constantan Red Brown Black Black
K KX Chromel Yellow Alumel Red Brown Yellow Yellow
T TX Copper Blue Constantan Red Brown Blue Blue
E EX Chromel Purple Constantan Red Brown Purple Purple
--- RX, SX Copper Black Alloy #11 Red --- --- Green
 
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