Copper temperature sensor 10Ω @ 25 °C
Copper temperature sensors are generally used in less critical industrial applications because they are not as accurate as platinum sensors, but their advantage is low cost and linearity. Copper is a material that does not withstand well in oxidizing atmospheres but it meets the needs in many common applications free of these atmospheres. This is because over a long period of exposure a possible oxidation can decrease reading accuracy.
Usually they are manufactured with some core insulating material which can be ceramic or epoxy resin with fiberglass, mica, etc.
Its external encapsulation can also be PTFE (Teflon), epoxy resin with fiberglass, metal sheath and other material depending on the working temperature of the application.
The copper sensors were developed and determined to have a resistance of 10Ω at 25 ° C and comply with a temperature coefficient α = 0.00427 Ohms/Ohms/°C.
The most commonly used copper sensor tolerance class is ± 0.2%.
Applications from -190 to 260 °C
Their applications may be diverse but are commonly used to determine the operating temperature in stators windings of motors and generators.