Question
Download Solution PDFWhich of the following alloy is widely used in thermocouples?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Thermocouple:
- The thermocouple is a sensor used to measure temperature.
- It consists of two dissimilar electrical conductors forming a junction.
- Nichrome contains 80% Ni and 20% Cr. It is used mostly in thermocouples and in strain gauges.
- A thermocouple produces a temperature-dependent voltage as a result of the thermoelectric effect and this voltage can be interpreted to measure temperature.
- Thermocouples are typically selected because of their low cost, high-temperature limits, wide temperature ranges, and durable nature.
- Thermocouple gives the fastest response in less time.
- Thermocouples are less accurate than RTDs in the low-temperature range.
- When compared with RTDs the durability of the Thermocouple is more.
- The typical range of temperature of the thermocouple is -1800C to 23200C.
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