Control.com - Nerds in Control

Hello,

I am new in this area and I want to ask You a few questions about ammonia tank level measurement. There are old spherical tank's (diameter 11m, 12,5m and 16m). We need reconstruction of this, that means new measurement system. For level transmitter there are 3" hole on the tank. Can I put in there stilling well and radar? Which is smallest stilling well diameter to put radar in that?

Please somebody answer.
thx

I know for the Ultra Sonic level transmitters if you going to mount on top with a 3" diameter then the length is not suppose to be more then 4"
from the top of the tank

But why not use a DP transmitter?

See the discussion of this topic here:
http://www.control.com/thread/1026207033

I have seen intelligent tank gauging systems supplied with TOYO engineered Ammonia storage tanks approx 20000 MT storage capacity.
These are ideal for interface level measurements and very accurate but costly. Includes the float and step motor to control the the torque on the rope of the float through microprocessor control.

Ex: FW 9000 series

http://www.tokyokeiso.co.jp/english/products/download/tg/FW-9000_TG -LD505E.pdf

Thank You all for fast response and answers. I think that the servo gauge is the best solution for commercial measurement, but I can`t put it in 3" hole.

Maybe TDR does the job or, again, non-contact radar with stilling well?