Resistance temperature detectors (RTD)
RTD (Resistance Temperature Detector) sensors operate on the principle that the electrical resistance of a metal changes with temperature. Due to their high accuracy and long-term stability, RTDs are a popular choice for many temperature measurement applications.
RTDs are most commonly manufactured using platinum, as this material exhibits a highly stable and linear resistance change over temperature.
Potential applications
Temperature measurement for monitoring, compensation, and control in:
- Process control
- Motor windings and bearings
- Battery packs
- Furnaces and kilns
- Environmental chambers
- Autoclaves
- Temperature range: RTDs can be used in a wide temperature range, typically from -200 °C to +850 °C, depending on the specific type and design.
- Accuracy: RTDs offer high accuracy and stability over a long period of time, making them ideal for precise temperature measurements.
- Linearity: The resistance of an RTD changes relatively linearly with temperature, which facilitates calibration and interpretation of the measured values.
- Connection types: RTDs can be supplied in various configurations, e.g., as 2-wire, 3-wire, or 4-wire connections, with the latter two options being used to minimize the influence of wire resistance.
| Available series |
|---|
| HEL-775 Series |
| HEL-700 Series |
| HEL-777/776 Series |
| 700 Series |
| HRTS Series |
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