Can a platinum resistor with a protective tube come into direct contact with the medium?
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Hello, everyone. I’ve run into a problem recently: can the platinum resistor with a protective tube, as shown in the image, come into direct contact with the medium, or is it necessary to use a sleeve?
In most cases, platinum resistors with protective tubes cannot come into direct contact with the medium; a sleeve must be used to protect them. The reason is that the material of the protective tube is usually not corrosion-resistant or unsuitable for contact with the medium; direct contact with the medium can cause the protective tube to corrode or be damaged, thereby affecting the measurement accuracy and service life of the platinum resistor. Therefore, if you need to use a platinum resistor with a protective tube for medium measurement, you should choose a material suitable for the medium to make the sleeve, and ensure that the connection between the protective tube and the sleeve is tightly sealed to prevent the medium from penetrating into the protective tube. .
Direct contact is possible without any problem; for corrosion protection, a PTFE lining is required. If needed, you can contact me – Huang from Anhui Tiankang Instruments, phone number: 18225806021
It’s best to add it. It leaks easily if not used properly. Unless it’s absolutely necessary.
We used your product, and then a sleeve was added
Yes, it was added later; during maintenance, if there is no sleeve in place, the medium will leak out
This sleeve is only meant to facilitate the insertion and removal of the probe; it is not thick enough, and its resistance to pressure and corrosion is limited, so an additional sleeve is still needed
1. The jacket prevents the leakage of flammable, explosive, and toxic materials. 2. Remember to insert the ‘casing’; high-temperature heat transfer oil must be poured into the casing, otherwise there will be severe measurement delays
Replace the sleeve; simply put, it’s about thickening it