Advantages and disadvantages of platinum resistance thermometers and bimetallic thermometers
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What are the advantages and disadvantages of platinum resistance thermometers and bimetallic thermometers? In what occasions are they all used? Thank you.
The platinum resistance thermometer features remote display! Bimetallic in-situ display! Check out more locations! Read more books! Check it out online more often!
Thermistors allow for remote temperature indication, while bimetallic elements can only provide local display. Thermistors can be equipped with alarm functions, whereas bimetallic elements are used solely for local display. Bimetallic elements can measure higher temperatures, but they are limited by high temperatures; the specific choice depends on the process requirements. If local display is sufficient, then bimetallic elements will do. Of course, thermistors are much more expensive than bimetallic elements
Thermistors can transmit signals over long distances, while bimetallic elements can only provide local readings. Thermistors are expensive, while bimetallic elements are cheap. The precision of thermal resistors is higher than that of bimetallics. Thermistors can be used in places where control is needed
You can compare the relationship between bimetallic elements and platinum resistors to that between pressure gauges and pressure transmitters – the former is intuitive and suitable for on-site installation. The latter was sent back inside for observation. (Except for transmitters with a display.) . . ）
Reply to 5# qhlylxj: Advantages of bimetallic materials: ① Simple structure and low cost； ②Easy to maintain ； ③Continuous indication ； Disadvantages of bimetallics: ① Lower measurement accuracy ； ②The range and scope of use are limited ； Advantages of thermal resistors: ① High measurement accuracy ； ②It has good reproducibility, maintaining stability and accuracy over many years ； ③Fast response time. Disadvantages of thermal resistors: ① Unable to measure high temperatures ； ②Requires an external power source ；
The last edit to this post was made by Changfeng Jiwanli on 2012-9-30 at 10:43. One more thing: a thermal resistor measures the temperature at a single point, specifically the temperature at its end. A bimetallic thermometer measures the temperature of the section that is inserted. This can also be evident in certain situations.