Does anybody have EXPERIENCE with this task? We need medium accuracy only. Thanks!

 

Try mounting your hopper on load cells and using a load cell sum box/card available from most load cell suppliers, then use a (loss in weight)/(time) algorithim to calculate your rate. Add some intelligence to the system so that it can detect when the hopper has been re-filled.

 

Daniel:
We have had good luck and fairly good accuracy using a Panametrics XMT868 Flowmeter using transducers that are usable above 500 degrees F. This unit is being used to measure asphalt at about 400 degrees F at the outlet of a Deasphalting unit as it goes to tankage. Metered flow and tank upgauges generally agree within 5% or so.

John A. Beck, III
Control Systems Engineer
Pennzoil-Quaker State Company
Shreveport Refinery
P O Box 3099
Shreveport, LA 71133-3099
(318) 632-4038
(318) 632-4037 FAX
email: [email protected]

 

Contact Engineering Measurements Company with regards to their HELIX flow meter. (Mr. Saeid Hosseini @ 303-651.0550) They have sucessfully used this meter on bitumin service in Sweden.

John Catch
InFLOW, INC.
[email protected]

 

If you don't get any help, send me an e-mail with more application details.

Tom Nelson
[email protected]

 

Two technologies have been successfully applied to this application, coriolis mass flow meters and ultrasonic time of flight spool piece flow meters. Contact me if you would like more details.

 

I have seen people use clamp on ultrasonics with some success. Try companies like Controlotron and Eesiflo