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Regarding the requirements for temperature, pressure, and level instruments, is it necessary to provide the viscosity and density of the substance as well?

2019-07-03View Original

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This post was last edited by SACREDSOUL on 2019-7-3 at 14:11. When specifying the requirements for temperature, pressure, and level instruments, is it necessary to provide the viscosity and density of the substance as well?
Reply #22019-07-03
The divine sword is sharp. . . Why does it look the same as an ultrasonic level gauge? :P-ultrasound is a useless device; boss, what parameters exactly do you want to measure?
Reply #32019-07-03
Of course, the more parameters provided, the better
Reply #42019-07-03
Temperature is not required; pressure and density are needed, with density being essential. As for viscosity, it is not necessary. This is my personal opinion for reference only.
Reply #52019-07-03
I don’t quite understand what you mean by asking this question. Are you referring to measuring temperature, pressure, and liquid level?
Reply #62019-07-03
This is closely related to the requirement you mentioned; if you need high precision, you must choose the appropriate type of instrument, which requires knowing more physical parameters of the material.
Reply #72019-07-03
Generally, temperature and pressure are not required; if it is a double-flange level transmitter, the density must be provided.
Reply #82019-07-03
To measure the liquid level, it is necessary to know the viscosity. For liquids with high viscosity that tend to crystallize, it is important to consider the appropriate connection method; flange connections may be needed in such cases. Additionally, considering whether the medium is corrosive determines what material should be used for the contact surfaces
Reply #92019-07-03
This post was last edited by Military Emblem 81 on 2019-7-3 at 19:41. To achieve the desired measurement results, it’s better to provide as much information as possible; the type of medium and its density also need to be specified. For example, when using radar with dual or single cables to measure liquid levels, the selection depends on the dielectric constant of the medium being measured.
Reply #102019-07-04
When measuring temperature, it is generally not necessary to provide density or viscosity. . . It’s fine to provide it when the viscosity is terrifyingly high. For level measurement, whenever liquid contact is involved in the measurement process, its viscosity must be provided; as for whether density is required, it depends on the principle behind the level gauge. When measuring pressure for height determination, density is generally not required, but viscosity must be provided – this is necessary to determine whether it is more appropriate to use a hole for pressure measurement or a flat diaphragm. When measuring very low pressures, viscosity and density must both be provided.

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