Rtd Sensor Temperature Range

Pyromation manufactures resistance temperature detectors and resistance thermometers for many industry applications.

Rtd sensor temperature range.

Resistance temperature relationship of metals. Common rtd sensing elements constructed of platinum copper or nickel have a repeatable resistance versus temperature relationship r vs t and operating temperature range the r vs t relationship is defined as the amount of resistance change of the sensor per degree of temperature change. Nickel is suitable for temperatures below 300 0 c. Each type of temperature sensor has a particular set of conditions for which it is best suited.

For example a class a sensor equipped with a coiled rtd element must maintain the specified tolerance from 100 450 c. Note that iec 60751 specifies a maximum temperature range for each class. Different combinations of metals can be used in building the thermocouples to provide different calibrations with different temperature ranges and sensor characteristics. Thermocouples are temperature sensors that use two different metals in the sensor to produce a voltage that can be read to determine the local temperature.

Rtd sensor class a thin film din platinum 73 c 260 c 100 ohm sa1 rtd series check stock lead times 56 in stock for same day shipping. The linear approximation of the resistance temperature relationship of the metals between 0 0 c. Rtds offer several advantages. This depends on the material of the wire used in the sensor.

Order before 8pm est standard shipping mon fri. The curve describes the resistance vs temperature characteristics of a platinum 100 ohm sensor the standardized tolerances and the measurable temperature range. The relative change in resistance temperature coefficient. By selecting the proper elements and protective sheathing rtds can operate in a temperature range of 200 to 650 c 328 to 1202 f.

Why use an rtd instead of a thermocouple or thermistor sensor. The rtd pt100 and pt1000 are available in a similar range of tolerances and both can have similar temperature coefficients depending on the purity of the platinum used in the sensor. From the temperature of 0 0 c up to a temperature value where the change is linear is considered as the temperature range of the sensor. A wide temperature range approximately 200 to 850 c good accuracy better than thermocouples good interchangeability long term stability.

When comparing the pt100 vs pt1000 in terms of resistance keep in mind that resistance value readings for the pt1000 will be higher by a factor of ten than. When operated outside this temperature range the sensor accuracy might default to class b.