A duplex thermocouple is a temperature sensing device that consists of two independent thermocouples within a single probe or sheath.
Here are the key points about duplex thermocouples:
- Dual sensing elements: Contains two separate thermocouple circuits in one assembly.
- Redundancy: Provides a backup measurement in case one element fails.
- Accuracy verification: Allows for cross-checking between the two elements for improved measurement reliability.
- Types: Can be made with any standard thermocouple type (e.g., Type K, Type J, Type T).
- Applications: Commonly used in critical processes where continuous temperature monitoring is essential.
- Safety: Enhances process safety by reducing the risk of complete measurement failure.
- Configurations: Can be identical pairs (same thermocouple type) or dissimilar pairs (different types).
- Installation: Requires only one process connection point, saving space and reducing installation costs.
- Output: Provides two independent temperature signals from a single probe.
- Calibration: Each element can be individually calibrated for maximum accuracy.
Duplex thermocouples are particularly valuable in industries such as power generation, chemical processing, and aerospace, where temperature measurement reliability is crucial for safety and efficiency.
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