Metal tube rotameter
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Do metal tube rotor/flotator flowmeters have maximum or minimum flow velocity limits?
Yes, when the flow rate is too high, it goes to the top, and the measurements become inaccurate. But if it’s too low, it doesn’t work either—no measurements can be taken at all
I think there’s a maximum value, but no minimum value. It cannot be infinitely large; inaccuracies also occur at low flow rates.
There are maximum and minimum flow speed limits; if the flow rate is too low, it cannot be measured, and if it’s too high, the measurement will be inaccurate.
Such flow meters definitely exist, with maximum and minimum flow rate limits
Of course there is. Since the up-and-down movement of the float is limited by the length of the measuring cone tube, the measurement range of ordinary rotameter is set between 10% and 100%. Before placing an order, it is necessary to select the appropriate flowmeter based on the properties of the medium and process conditions; moreover, the type of float must be selected and calculated to ensure that it falls within the desired measurement range.
Your question doesn’t specify the diameter of the rotameter, nor does it refer to any particular float meter. It seems you’re actually asking about the applicable scenarios for rotameters... Rotameters are not suitable for locations with low pressure and slow flow rates. The so-called flow rate is determined based on the velocity of the medium within the pipeline. The flow rate of process media in pipelines cannot be infinitely high; therefore, as long as the flow rate remains stable, float meters can generally be used. Float flow meters have a relatively wide range of applications; they are cost-effective flow meters with relatively low accuracy, suitable for use in both gas and liquid environments. I hope the above answers are helpful to you~~~! !
There are maximum and minimum flow rate limits. I’ve tried it; at maximum flow, the float gets stuck right at the top, and it can’t be measured if it’s too small.
The maximum and minimum flow limits... What you’re saying sounds like: range............ What do you mean? I want to use a rotameter, but I’m not sure if the operating flow rate and other conditions are suitable for it...? ? Is that what you mean? ?
Of course there are. First estimate the range, and then buy one with the corresponding range. That’s it
The maximum, yes. Minimum; consider the precision. For rotameter flowmeters, 10% of the maximum value is considered the minimum accurate flow rate. You can see that below the 10% mark, there are no more markings at all. There’s the text “RP”, which means that precision is no longer a consideration. @jiaguoyun @Malaysia with a large bow