We are currently expanding our coker and adding two new drums plus a new Coking heater. The plan is to use Ultra sonic meters in the Coking heater pass flows. Is anyone else doing this and what is your opinion of Ultra sonic in this service? How does a Coke drum switch affect the Ultra sonic? We currently have Wedge meters and they work great but our IT guys want to go with Ultra sonic for both of the Coking heaters. I am skeptical of Ultra sonic in this stream.  Thanks