Pressure Sensor

I don't see anyone properly helping you from the description you've given us. From your description I cannot tell if you are making beer, fertilizers, plutonium refinement, cement or a myriad of other chemical reactions.

Sounds like any PRV would work. Relief valve - Wikipedia, the free encyclopedia

Is that what Union Carbide used in Bhopal?

Don't know. Wasn't there.

relief valve is a single system which senses and depressurizes , but i am searching for two different systems, one which can sense the pressure and another which will depressurize ...and such type of systems which were in existence before 1990

That's a pressure sensor that controls a solenoid or mototized valve.

You should be talking to a controls and valve company. It's done every day, but it will still be much more than a single valve.

There isn't enough information here and anything we give you will have to be confirmed by the company selling the product. That's not us.

Go here: Search GlobalSpec and search for pressure relief systems.

thanks a lot, will check the link you sent thanks again...what i am searching is just a logic , may be thats y its difficult to search data o it, and before 1990 , its difficult task, at least on internet, any specific books or internatinal journals, papers you know? need specifically written that sensors senses pressure and then valve depressurizes the reactor or tank.

What's the significance of pre-1990?

lucky for me all my collective knowledge is pre -1990

<unsubscribes>

Please describe the process, its temperature and pressure, the volume of the vessel, its maximum working pressure and materials of construction for starters.

The simplest way to depressurise a tank is to leave the lid off. What is going on in this tank that needs to be contained?

The best way forward might be to hire a process-based consultant, familiar with the field in which this process is taking place. In general terms, process intensification means inherently safer plants: smaller inventories and so-on. There's 'F-all' in this thread to get started on so far!

i am doing some research so need the systems used in refinaries to depressurize the tanks to prevent it from bursting .....when temp increases , pressure increases and that can be sensed by sensors n then tank is depressurized

One way is to make the vessel strong enough to withstand the maximum pressure in the process and fit it with a burst disc that operates above that pressure. That way, add-on stuff is not needed and the function described in the original post is fulfilled.

Is there a Process Engineer in the area?

Haz this equipment and any changes to the process been subjected to a formal HazOp Study? If not, why not and why is there a need to send it through CR4 instead?

What happens to the vented material? Does it just BLEVE?

So why not look into refineries and ask the specific questions there? It would save bothering CR4 readers.

something as simple as a water pressure switch will active a water pump. ect.

can you pls send me the link which you posted

That's fine for steam in a car.

It isn't so clever for butane in a refinery.