Dear Shriil

I have sent you a private message.

The Siemens Sitrans LR460 will and does work in this application.

www.siemens.com/lr460

Regards ■

please le me have details of a drawing of the tanks to start with ■

Dear Shrill,

Rather than using level indicator, you can try using Hardy Loadcells and controllers. This will sort out the problems. You can visit www.hardyinstruments.com for more details.

Regards,

Vivek Joshi

India. ■

Shrill

I'm not sure I fully understand your application.

I understand that you are wasting air.

But is the object to switch off the blower when the hopper is full or to remove the ash.

or to switch the blower on at low level to fill the hopper

or a combination of the above

In the past we have fitted probes which detects the interface between the air/ash mixture and ash.

This can be repeated for Air/Cement or even oil/water

We have fitted probes on various applications in Coal; fired power stations and ash handling cement handling etc

If you would like to take the application further then please get in touch via the thread or directly by email

Regards ■

Hello Shriil

If you send me an e-mail I will put you in touch with our people in Siemens Kalwa office. They have considerable experience measuring levels on these types of applications all over India and can offer suggestions and advice as required.

Regards

mike.tallevi@siemens.com ■

Hi Shrill,

We have an excellent solution from Princo instruments USA. Pl. send in your requirement at akash@hitech.in or call 91-674-3256465 for more details. ■

Pl. visit www.princoinstruments.com for more details ■

Dear Shril,

Please visit www.princoinstruments.com for flyash probe details. We are only company Worldwide extending 5 years warranty on flyash probes.

Please write to us with your specific requirement or trial.

Regards

Akash ■

Although I have used many types of level sensors in my 'plant life' (I always found the simple rotary type to be the best) - I do know from my current Primasonics Acoustic Cleaner 'life' that installing the correctly sized acoustic cleaners either/both on top of the silo and/or just above the low level probe can ensure two things.

Firstly the sound waves help greatly to keep the level indicators clean. Secondly the sound waves tend to level horizontally, the material stored in the silo, thus preventing peaks. We have many examples operating in fly ash silos in India and if you would like further details or client contacts in India, just drop me an e-mail.

Regards

Donald

don@primasonics.com

www.primasonics.com ■

Hello Shriil

I assumed you wanted continuous level measurement. If you want point level, we can suggest the LPS, good to 350C (general purpose models).

The whole point level product line is displayed at https://pia.khe.siemens.com/index.aspx?nr=4918

As I said, if you e-mail me I'll send you the name of an experienced contact in India.

mike.tallevi@siemens.com

Regards ■

Although my company does not make many of these devices I have a lot of experience on this application. In the huge coal fired utility binge of the 80s, almost all the utilities specified the PND gauge from Thermo Measurement in Texas. It was a gamma ray source and detector mounted to watch several hoppers in a row. But nuclear is out of favor for sevferal reasons and people tried the microwave sender receivers (Delavan, AZ) (Hawk, Australia), but mkicrowaves bounce around mounds, so this was not good. the old capacitance style probes had temperature, calibration, and build up problems. Todays units offered by many of the people who have previously replied offer digital calibration and stability, build up protection, and simplified cal procedures. The only thing to be careful is provide correct temperature requirements to the manufacture. bruce.erickson@bulkprosystems.com ■