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Posted by Bob D. on April 26, 2006 at 08:08:10:
In Reply to: BFW meter posted by Al the boiler guy on April 22, 2006 at 14:12:44:
You know, I was going to stay away from this 'cause it can be a little dicey depending on what you want to do with the signal, and there's a lot of ways to do it, but anyway: You could look at a turbine meter or similar that is usually used for 3-element drum level control (P-T compensated, all that stuff - very common) or, if this is a retro-fit application and you want to avoid the piping work, you could try a "clamp-on" permanent ultrasonic job along the lines of a Controlotron 1010 series (Google Controlotron) and install it "on the fly". One of my consultants is trying this model series out (I had never heard of them before this, and I had always just used rented ultrasonics for "temporary" field checking), and I'm kind of waiting to see how it works out.