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[imtinan mohsin]

Level of exisitng Butene-1 Sphere (Capacity = 2500 m3) is being measured by Radar transmitters.

can DP level transmitter be used to measure level of a new Butene-1 sphere (Capacity = 8000 m3)?

[Art Montemayor]

imtinan:

You certainly can employ a pressure-differential type of transmitter to monitor a liquid level in any tank - especially a sphere.

This is the basic instrument that we used in Industry when I was a new graduate engineer in 1960. It always worked - but with a lot of maintenance, vigilance, and often a lot of inaccuracies. We basically put up with it because that was the state-of-the-art at the time. Today, things are totally different.

I would never employ that type of level detection today - especially on a critical, expensive storage tank - when I had the ability to employ a Radar (or Micro Wave) type of level detector. Here, I am assuming that the fluid measured is applicable to the use of Radar - and most fluids are.

The simplicity, the accuracy, and the ease of operation make the Micro Wave instrument the one of choice today. In fact, I have found that the cost of installation and over-all cost of maintenace is far less that that of a mechanical float or of a dp cell here in the USA. The Micro Wave can readily be adopted to monitor, alarm, and inventory-control through the DCS system (if you have one). It's accuracy is unsurpassed.

But the BEST FEATURE about the Micro Wave type of instrument is that no technician needs to enter the tank or to come close to the fluid in order to work or maintain the instrument. Everything is done on the outside - and with simple electronic components changed out. Quick, simple, AND SAFE![