Compensating Cable
Thermocouple extension wire is used to extend the signal from a probe to instrumentation such as controllers or recording devices. Often times, multi pair thermocouple extension cables are preferred in these applications. Extension wire is designated by an “X” after the ANSI thermocouple type- i.e. BX, EX, JX,KX, SX, TX
Limits of Error in Thermocouple Extension / Compensating Cable
| Type of wire | Temperature Range | Standard Grade |
|---|---|---|
| TX | (0°C to 100°C) | ±1.8 (1) |
| JX | (0°C to 200°C) | ±4 (2.2) |
| EX | (0°C to 200°C) | ±3.1 (1.7) |
| KX | (0°C to 200°C) | ±4 (2.2) |
| NX | (0°C to 200°C) | ±4 (2.2) |
| RX | (0°C to 200°C) | ±9 (5 |
| SX | (0°C to 200°C) | ±9 (5 |
| BX | (0°C to 200°C) | ±6.7 (3.7) |