About S type thermocouple
May. 21, 2024
An S type thermocouple is a device that measures temperature and is commonly used in industry and science. It consists of two metal wires. The principle is to use the thermoelectric effect between two different materials to generate an electric potential difference and thereby measure the temperature.
1.The difference between S type thermocouple and K type thermocouple
Although S type thermocouples and K type thermocouples are both types of thermocouples, they have differences in terms of range of use, accuracy, response time, etc.
Configuration comparison | ||
S type thermocouple | K type thermocouple | |
Material | S type thermocouple is platinum-rhodium thermocouple, inside the two core, are platinum-rhodium wire, belonging to the precious metal material. | K type thermocouple is made of Ni-Cr - Ni-Si alloy, which is the most widely used clean metal thermocouple at present. |
Operating temperature | The maximum long-term service temperature of the thermocouple is 1300° C, and the maximum short-term service temperature is 1600 ° C |
Its operating temperature is 0-1200℃ |
Oxygen resistance | S Type thermocouple has good chemical properties, thermoelectric potential stability and good oxidation resistance at high temperature, durable. | K type thermocouple has weak oxidation resistance and short service life. |
The S type costs five times as much as the K type | ||
In short, choosing which type of thermocouple needs to consider the actual application scenario and comprehensively consider factors such as measurement range, measurement accuracy, and response time.
2.How to use S type thermocouple
When using S-type thermocouples, you need to pay attention to the following points:
u Connect the two ports of the thermocouple to the measuring instrument correctly to ensure that it can read temperature changes normally
u Avoid bending, pulling or cutting the thermocouple wire, which may cause damage or even breakage of the thermocouple's heat-sensitive element
u Check the thermocouple for obvious damage or aging before use, and replace it with a new thermocouple if necessary.
u According to actual needs, select a thermocouple with appropriate temperature range and measurement accuracy for use.
3. S type thermocouple application scenarios
S type thermocouples can be used in various high-temperature measurement scenarios, such as furnace temperature measurement, high-temperature reactor temperature control, glass production, etc. Generally speaking, if you need temperature measurement with high accuracy, fast response and good stability, you can consider using S type thermocouples.
