Dear all,

Is there no way to measure the solids flow rate online (per every 0.1 sec) in a gas? I know that the total mass flow rate can just be measured by mass of the batch divided by total time.

Isn't there a solution for this in food industry?

I am very much looking forward to your replies.

Regards,

Rahul ■

Dear Mantoo,

First of all, thank you for your reply.

Regarding measuring at the injection point, it is not possible, since i am transporting the solids using pneumatic transport.

I am really looking for some solution which can give me solids flow rate by measuring the pressure difference in the horizontal pipe.

More input please!!

Regards,

Rahul ■

Dear Lyn,

I would like to measure the suspended coal powder's mass flow rate in a gas stream. This should be an online measurement per every 0.1 seconds. The measurement need not be accurate, but should be robust.

Brief description of my setup:

It has a horizontal pipe of 5 mm diameter. The coal powder is of 50 micron meters. I am transporting coal using air. I want to measure the mass flow rate of coal online per every 0.1 seconds just to know if the flow is consistent.

It would be a great favor if you could give your suggestions.

I look forward to your reply.

With best regards,

Rahul ■

Capacitance or electrostatic probes have been used by various academic researchers for this purpose but I am not aware of any commercial system. Read the following post

https://forum.bulk-online.com/sh...t=electrostatic

What kind of accuracies are you looking for? Measuring pressure is not a good idea for a number for reasons i.e the conveying pressures fluctuate during conveying, the dp across the filter varies with time etc.

Dear Mantoo,

Thanks again for the information. I contacted some experts about the capacitance and or electrostatic probes, who posted in the thread given by you. I will have to wait for their replies.

I am not looking for accurate measurements, but quick response devices (per every 0.1 secs) to know that my flow is consistent. I will have vibrations in the feeding system, hence weighing online is unreliable.

Could you also explain why measuring pressure drop in the system is not a good idea? Doesn't it say something about the flow of solids?

Thanks again.

I look forward to your reply.

With best regards,

Rahul ■

Dear Mantoo,

Thank you for your suggestion. Is there a clear description about this light source and photocell method somewhere? It would be helpful if you can give a description about it.

Thanking you.

With best regards,

Rahul ■

Dear all,

Let's be positive and keep this forum as a good learning platform.

Let's be professionals!

Thanks to everyone who supported me by giving their valuable advices.

Regards,

Rahul ■