Resistance Thermometer and Thermocouple Verification and Calibration System

Differences between RTDs and Thermocouples:

1. Different Materials:

RTDs are made of metal materials sensitive to temperature (such as Cu50, Pt100, Pt1000, etc.), and the resistance value of these materials changes with temperature; thermocouples are made of two different bimetallic materials (such as platinum-rhodium/platinum, nickel-chromium/nickel-silicon, etc.), which generate a potential difference when the temperature changes, enabling temperature measurement.

2. Different Electrical Signals:

RTDs output resistance signals, while thermocouples output voltage signals.

3. Different Working Principles:

The working principle of RTDs is based on the characteristic that the resistance value of a conductor or semiconductor changes with temperature. When the temperature of the conductor increases, its resistance value changes. The working principle of thermocouples is based on the thermoelectric effect, where a thermocouple consists of two different conductors connected at both ends to form a circuit.

4. Different Measurement Ranges:

RTDs have a relatively narrow measurement range, while thermocouples have a very wide measurement range.

5. Different Application Scenarios:

Due to their high measurement accuracy and good stability, RTDs are widely used in low-temperature measurement scenarios. Due to their excellent high-temperature resistance and wide measurement range, thermocouples are widely used in high-temperature measurement scenarios.

The IQS1200 Thermocouple Calibration Furnace is a new-generation temperature instrument calibration equipment launched by Jiangjing Technology. The device features excellent insulation performance, fast heating, stable temperature field, an independent intelligent temperature control system, and simple operation. It significantly improves the efficiency of thermocouple calibration/verification and can be widely used in metrology calibration, universities, research institutes, power, petroleum, petrochemical, metallurgy, military, aerospace, thermocouple manufacturers, and other industries.