Compositepro,
Thank you for your suggestions.
I accept your point about low rate purged flow being a viable consideration, and the ability of today's dp cells, provided they are not sealed with diaphragms, having the ability to measure inches of water with static pressures of hundreds of psig. I...
Compositepro: I take your point about purged water tappings on the dp transmitters suitably placed on a vertical pipe, but nobody wants water injected into the mining slurry. To keep those tappings from blocking up, there would have to be some nice flow of pressurized water. The other problem...
Gentlemen,
May be I didn't make myself clear. I need continuous, long term reliable density measurement of highly abrasive mining and dredging slurries, which measures a good representation of what is really coming our of good old mother earth, in pipes for 3" to 40". The noble suggestions we...
Thank you Micalbrch, but we have found once you sample media at a lower velocity, it is not a continuous and representative sample of what is coming out of good old mother earth.
I still like the sound of continuous in line weighing. In principle it sounds just right. I just have to find it.
Thank you Thealanator. Yes, I've looked at Coriolis. Fantastic accuracy, but they embody thin wall metal tubing. Because of the very abrasive nature of mining or dredging slurries they would not last a week.
I have heard of a continuous weighing technique, which continuously and in-line...
Can anybody advise on a non-nuclear technique for continuous in-line density metering. Nuclear is too costly, with safety officers, reporting, wipe tests, separate nuclear source delivery and disposal all contributing to those high dollars.
I've tried ultrasonic density sensors, but above 10%...
There are some alternatives to nuclear density meters for mining slurries.
An ultrasonic density meter passes sound waves across the pipe diameter. A strong echo is is received with low % solids, but as the solids increase the sonic energy is absorbed by the particles and the echo weakens. The...
Has anybody had experience with the sciam non-nuclear density meter for mining, dredging and sewage slurries. I guess I'm not allowed to use website notification, but this sure looks an interesting device.
http://www.sciamworldwide.com
thread698-149752
The best device I have come across is a direct mass per unit volume device. This measures a continuous and good representation of the media ( a 12" ID is 7 feet long, a 40" ID is 12 feet long). The signal is interrogated at 110 Hz, giving a response time is 45 milleseconds, so...
