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You'll never guess what we ended up doing for this application. We decided to give a corrosion transmitter a try, we are just in the process of hammering out the specifics but it looks like we are going to go with the Honeywell Smart CET5000. We thought that since it is corrosion that we are...

That's basically the type of info that we are looking for, just a general feel for the reliability and or maintainability of these instruments. It's is hard to get a feel for reality when you start talking to vendor sales people, no offence guys but it can be true. We were thinking of using this...

Has anyone out there used a paper tape type analyzer to measure the presence of a gas? See link; http://www.scottinstruments.com/products/product.cfm?ID=44 Does not have to be this exact brand just the same principle. If you have, what type of gas have you been measuring? Have you been happy...

I could look into that, I don't know much about mass spec so I guess I should learn. I'll let you know how I make out. Thanks!!

I appreciate what you are saying but it's not one component that we are interested in, it's the conglomerate of variables that do the damage to the compressor so that is what we would like to measure (regardless of cost). If we only measure one component of the stream there could still be others...

Guided wave do work well, however from what I have seen they can be fairly costly. We have also been burnt when there are partial obstructions or, as previously mentioned, turbulence. Did you try looking into a magneto restrictive float type. Basically the same principle as the displacer...

I'll elaborate more on the purpose of this instillation, initially I was brief because I was unsure of the feedback that I would receive (first timer). Anyway, all of the gas in the flare header is sent to a flare gas compressor which pushes the gas back to an amine unit where it is cleaned and...

Why distilled water? consistency? I was hoping to use utility water which is basically river water minus some turbidity. The pH measurement doesn't have to be that accurate it is more just to tell if there is acid present or not.

Wording in first section should have been "measure the ph of the water as a result of the gas (vapor) passing through it"

I am currently in the process of trying to find a good way to measure the pH of a gas stream and I am searching for alternatives. The application is in an oil refinery, the gas stream is the flare header gas, made up of a variety of hydrocarbons, basically anything and everything in the...