Thermocouple Wire Types Chart

Constantan makes up the red wire.

Thermocouple wire types chart.

Bare thermocouple wire and extension wire conductors based on ohms per foot at 70 f note. Thermocouple leads and connectors are standardized with color plugs and jacks indicating the type of thermocouple. Every standard thermocouple type has a universally accepted standard colour pair. Difference in thermocouple types each calibration has a different temperature range and environment although the maximum temperature varies with the diameter of the wire used in the thermocouple.

Diameter and construction of thermocouple assembly. Note that the color codes on this page refer to the united states ansi mc96 1 1982 colors a chart of us ansi color codes see our wire faq page. Different colors for insulation and lead wires also indicate the thermocouple grade and extension grade. A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction a thermocouple produces a temperature dependent voltage as a result of the thermoelectric effect and this voltage can be interpreted to measure temperature thermocouples are a widely used type of temperature sensor.

Reotemp instrument corporation 10656 roselle street san diego ca 92121 phone. Thermocouple type comparison chart. Thermocouple wire size and resistance table resistance in ohms per double foot at. Type k thermocouple reference tables type j reference tables all major thermocouple reference tables reotemp instrument corporation 10656 roselle street san diego ca 92121 phone.

Type k reference chart f. Omegaclad is a three part system composed of compacted mgo insulation thermocouple wire and metal sheath. Common thermocouple types thermocouple. Thermocouple wire colour chart.

Four factors determine the useful service temperature for omegaclad assemblies. Although thermocouple calibration dictates the temperature range the maximum range is also limited by the diameter of the. Table 1 lists several common thermocouple types and their characteristics. This is the most common thermocouple type that provides the widest operating temperature range.

For example if you need a j type thermocouple a pairing of constantan and iron you ll want to use the red white thermocouple wire to go with it. This chart shows each thermocouple type and its estimate millivolt output vs temperature. Commercial thermocouples are inexpensive interchangeable. Type k thermocouple chromel alumel 200 c to 1260 c 328 f to 2300 f chromel 90 nickel and 10 chromium alumel 95 nickel 2 manganese 2 aluminium and 1 silicon.

Type k reference chart c.