18 T/C Leadwire Types

Rolfes @ Boone set the Color-Code Standard for the leadwire industry. With reference to Rolfes @ Boone leadwire as the current and most widely used color-code, use the following charts to verify which code your facility is using.

Note: The #1 Thermocouple at the bottom of each temperature cable.

As an "ease for reading", the first T/C to the last is listed in the following format ...

Please read any notes following the chart.

18 Thermocouple (T/C) Leadwire Manufactures
 

T/C Rolfes Brice Burdick HotSpot * Old Rolfes
Constantan White Black Silver White White
1 Black Brown Brown Black Red
2 Blue Red Red Blue Black
3 Green Clear Orange Green Green
4 Red Yellow Yellow Red Yellow
5 Yellow Green Green Yellow Pink
6 Clear Blue Blue Clear Blue
Constantan Brown Grey White Orange Brown
7 Black Brown Brown Black Red
8 Blue Red Red Blue Black
9 Green Clear Orange Green Green
10 Red Yellow Yellow Red Yellow
11 Yellow Green Green Yellow Pink
12 Clear Blue Blue Clear Blue
Constantan Orange White Black Brown Clear
13 Black Brown Brown Black Red
14 Blue Red Red Blue Black
15 Green Clear Orange Green Green
16 Red Yellow Yellow Red Yellow
17 Yellow Green Green Yellow Pink
18 Clear Blue Blue Clear Blue

* The HotSpot leadwire has a BROWN Plastic Jacket.

Verify the color-code with an OHM meter prior to replacement.

 
Rolfes @ Boone
P.O. Box 369
1773 219th Lane
Boone, IA 50036
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