If your mineral is non-magnetic you should be able to use a set of the old Mobray float switches.

If your conditions are magnetic then you need to set up a derivative controller on what you've already got fitted.

Are your present sensors in a level bottle & bridle arrangement? ■

If your mineral is non-magnetic you should be able to use a set of the old Mobray float switches.

If your conditions are magnetic then you need to set up a derivative controller on what you've already got fitted.

Are your present sensors in a level bottle & bridle arrangement? ■

Level bottle & bridle is the norm in vessel instrumentation mounting. Fluid level is monitored & controlled by entraining fluid in a vertical chamber, bottle, connected to the vessel wall by a pair of vertically disposed flanged nozzles, bridle. It is a standard method in pressure vessel design but probably too rich for the blood of mineral process equipment designers. ■

Level bottle & bridle is the norm in vessel instrumentation mounting. Fluid level is monitored & controlled by entraining fluid in a vertical chamber, bottle, connected to the vessel wall by a pair of vertically disposed flanged nozzles, bridle. It is a standard method in pressure vessel design but probably too rich for the blood of mineral process equipment designers. ■

Hi Babak,

I was recently involved in implementing a novel 'image based level sensor' at a major oilsands company in Northern Alberta, Canada. This is totally non intrusive, so does not depend on the properties of the stream. Also, it can be implemented without disturbing your current setup. It has given fantastic results and has been in operation for about 6 months now. I wonder if this application could solve your problem. I can send you more information if you're interested.

Oilmaniac ■

Hi Babak,

I was recently involved in implementing a novel 'image based level sensor' at a major oilsands company in Northern Alberta, Canada. This is totally non intrusive, so does not depend on the properties of the stream. Also, it can be implemented without disturbing your current setup. It has given fantastic results and has been in operation for about 6 months now. I wonder if this application could solve your problem. I can send you more information if you're interested.

Oilmaniac ■

ultrasonic transmitters and a target plate with float will work for copper ■

ultrasonic transmitters and a target plate with float will work for copper ■

Hi Guys,

We have just done a number of concentrators with a level instrument that completely ignores foam. I know that the ball and float arrangement with an ultrasonic transmitter has been a very popular method to date, we have however been able to get much better results with our system and complete stability on levels. We are successfully using the system in Platinum, Copper and Coal Concentrators, we also have it installed in Gold reactors and have had huge success with sump levels as well due to the fact that the instruments are completely noise immune. Accuracy and Linearity are quoted as being 1%. No maintenance of the system is required. Incidentally column flotation is also not a problem. The only drawback is that the maximum level that can be measured is 2.5 meters from the brim of the vessel. Should you require any further info, please feel free to contact me direct on info@instek.co.za ■

Hi Guys,

We have just done a number of concentrators with a level instrument that completely ignores foam. I know that the ball and float arrangement with an ultrasonic transmitter has been a very popular method to date, we have however been able to get much better results with our system and complete stability on levels. We are successfully using the system in Platinum, Copper and Coal Concentrators, we also have it installed in Gold reactors and have had huge success with sump levels as well due to the fact that the instruments are completely noise immune. Accuracy and Linearity are quoted as being 1%. No maintenance of the system is required. Incidentally column flotation is also not a problem. The only drawback is that the maximum level that can be measured is 2.5 meters from the brim of the vessel. Should you require any further info, please feel free to contact me direct on info@instek.co.za ■

Here is a link about Column flotation method. Wish it helpful for you. ■

Here is a link about Column flotation method. Wish it helpful for you. ■