How to choose the diameter of a thermometer probe?
Thread Content
How to choose the diameter of a thermometer probe? When there is no limit on the probe length specified on the container, what length is optimal for the probe? This post was last edited by Zhang Yongliang on 2008-1-12 08:28.]
Hehe. I’m using this post to ask: what should be the diameter of the two thermal resistors? Is it possible to use a diameter of 6mm as well?
There is no strict requirement regarding diameter; larger diameters with thicker jackets result in a slower temperature response, but better durability； A insertion depth of 300 for the large container is sufficient, unless the temperature distribution is uneven ； The diameter of the double-wire thermal resistor sheath can vary, depending on your temperature measurement requirements and the specific choices made by the manufacturer
For relevant regulations, refer to HG/T 20507-2000
It mainly depends on the medium being tested; for different media, the insertion depth of the measuring element varies.
The insertion depth of the large container is generally 300 MM; however, the length of the device nozzle also needs to be taken into account, resulting in a total length of around 450–500 MM. The diameter is generally less than 1 1/2 inches, and the probe rod is preferably conical due to its better sensitivity
The specific length is generally determined by professionals in the field of equipment or by the manufacturers
I agree with the view from the 6th floor. As a supplementary point, in process pipelines, the insertion depth is generally between 1/3 and 1/2 of the total length; if possible, the manufacturer can conduct vibration calculations to determine an appropriate insertion depth.
Comrade zhx7540, the standards can be found on that page; they are generally available on standard forums. Be sure to search at http://bbs.hcbbs.com/viewthread.php?tid=13912&highlight=HG-T%2B20507
The diameter should meet the requirements for response time; a length of 300–450 is ideal
The insertion depth is primarily determined by the temperature distribution, while the thickness depends on the extent of its impact on medium flow; the general standards should be followed
Haha, so there are so many considerations. I used to choose randomly, focusing only on the range and insertion depth, without ever paying attention to the diameter of the metal tube. Thank you all for your guidance.