The inner conductor is generally a low resistive wire (in some cases several wires) which transmits the electrical signal. Conductors of this type are used in measurement and control techniques and thus referred to as sheathed measurement conductors.
Example: The type Denotation 2C2A60 designates a cable coil with 2 cores, inner conductors made of cooper, insulation made of MgO (97%), the sheath material 1.4541 and an outer diameter of 6 mm.
Example: The type Denotation 2C2A60 designates a cable coil with 2 cores, inner conductors made of cooper, insulation made of MgO (97%), the sheath material 1.4541 and an outer diameter of 6 mm.
| Number of conductors |
Inner conductor |
Insulation | Sheath material | Outer diameter (1/10 mm) |
| 1 1-core | C Cooper | A 1.4541/SS 321 | ||
| 2 2 cores | Ni Nickel | 2 MgO (≥ 97%) | F 1.4571/SS 316TI | |
| 4 4 cores | CN Cooper-Nickel | 3 MgO (99,4%) | L 2.4816/Alloy 600 | |
| 6 6 cores | P 2.4951/Nimonic 75 | |||
| 8 8 Cores | Q 1.4845/SS 310S | |||
| R 1.4301/SS 304 | ||||
| S 1.4404/SS 316L | ||||
| X further Qualities | ||||
| Further types are available on request e.g. „wide space“ | ||||
| Inner conductor material | El. resistivity Ohm mm²/m at | Highest permissible application temperature ºC |
||||
| 20 °C |
200 °C |
400 °C |
600 °C |
800 °C |
||
| Cu | 0,0175 | 0,030 | 0,045 | 0,059 | – | 600 |
| CuNi 44 | 0,490 | 0,49 | 0,49 | 0,51 | 0,52 | 700 |
| Ni | 0,080 | 0,172 | 0,325 | 0,395 | 0,407 | 800 |
