For a large atmospheric-pressure storage tank that is 10 meters high and equipped with an ultrasonic level gauge at the top, is it also necessary to install one on the side as well?
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For a large atmospheric-pressure storage tank that is 10 meters high and equipped with an ultrasonic level gauge at the top, is it necessary to install an on-site level gauge on the side as well? ? ? What is the basis? ?
But the chief engineer said it can’t be seen on site; is it necessary to directly observe the liquid level at the site? ? What is the basis? ?
It’s a waste to use an ultrasonic level gauge; having one that can be used directly at the site is the best option, as it provides a double layer of protection against failures in the remote transmission system
In some factories, storage tanks do indeed have two level indicators: one is an ultrasonic or float level gauge at the top, whose signal is sent to the control cabinet for the personnel on duty to use when taking readings; while a magnetic flip-gauge or glass tube level gauge is installed on the side of the tank to provide operators on site with an immediate visual indication of the level. The two are not contradictory; they can be compared with each other as well. This approach also helps to prevent situations where something bad cannot be measured. In the chemical industry, it’s necessary to have a double layer of safety measures, and indeed, many reaction vessels are equipped with two pressure gauges.
It seems there is a requirement that local level gauges be installed on the storage tanks. I have remote radar level gauges here, as well as local flap-type level gauges on site. The intermediate tank only has a radar level gauge
All the storage tanks or pressure vessels in our plant (gas storage tanks are excluded) are equipped with both local and remote level measurement systems, which are calibrated by instrument technicians on a monthly basis.
There is an on-site display that provides a more intuitive view of the liquid level. Additionally, even if there is a failure in the remote monitoring system, it is still possible to see the liquid level on site. The same principle applies: even when there are pressure transmitters in the workshop, it is still necessary to install local pressure gauges
It must be installed on-site; it’s a relatively intuitive solution, and together with remote monitoring it provides a dual layer of protection. Many of our storage tanks are equipped in this way