Is there any chance the standard chilled mirror type dew point analyzer
would work in HC? The concept will work but getting Div 1 (Zone 0) approved
hardware is the sticky point.
Chilled mirror type dew points are less common these days because there are
other, simpler ways of detecting H2O but the situation for HC is more
complex. You have a range of components. A full blown gas chromatograph
could be programmed but I see no other way of measuring dew point other than
actually measuring the temperature at which condensation occurs. the actual
dew point is pressure sensitive as well, isn't it. That means the chilled
mirror would have to be operating at line pressure.
Actually, we have a chilled mirror right now. It's a pretty
subjective measurement, especially when there are 15 operators or more
doing the test depending on the day, and whose running that unit. We
seem to consistently be around 7 - 12 degrees lower than the pipeline
company says, but they only have one guy doing it for them. Our
temperatures can vary around 5 degrees just depending on whose doing
the test. An analyer(online or not), would fix a lot of our problems.
I just don't want some piece of junk that I'm going to end up fixing
all the time. I'm wondering if anyone has had any experience with
Yeah, I actually am in the process of talking to Ametek about that
exact analyzer. I'm just wondering if anyone else had had any
experience with any type of hydrocarbon dewpoint measurement.
Listening to the sales guys, and their customers has the potential to
be a little biassed. That's all.
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