Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature by correlating the
resistance of the RTD element with temperature. Most RTD elements
consist of a length of fine coiled wire wrapped around a ceramic or
glass core. The element is usually quite fragile, so it is often
placed inside a sheathed probe to protect it. The RTD element is
made from a pure material, typically platinum, nickel or copper.
The material has a predictable change in resistance as the
temperature changes and it is this predictable change that is used
to determine temperature.
They are slowly replacing the use of thermocouples in many
industrial applications below 600 °C, due to higher accuracy and
repeatability.
Conductor material: Copper wire, Tinned copper wire, Nickel plated
copper wire
Insulation: PTFE ( FEP, PTFE, PFA)
Braiding material: Copper wire or tinned copper wire
Jacket material: Telfon ( FEP, PTFE, PFA) or silicone or PVC
Technical parameter
| Voltage | >220V |
| Working temp | <250 ℃ |
| Resistance | 0.5Ω-1000 Ω |
| Thickness | 0.15mm-0.4mm |
| Diameter | 0.2mm to 3.0mm |
Ohmalloy provide RTD cable in all types.
| Core dia | Core type | Conductor material | Insulation material | Shielding material | Jacket material |
| 0.2mm2 | 2-core | Copper wire | FEP | Copper wire | FEP |
| 0.3mm2 | 3-core | Silver plated copper wire | PTFE | Silver plated copper wire | PTFE |
| 0.4mm2 | 4-core | Nickel plated copper wire | PFA | Nickel plated copper wire | PFA |
| 0.5mm2 | 5-core | Tinned copper wire | Silicone rubber | Tinned copper wire | Silicone rubber |
| | | | | |
Remarks: The size can be changed if special requirement.
The thickness of insulation also can be adjusted by special
requirement. We can do insulation thickness 0.2mm to 2.5mm
