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Participant

Join Date: Apr 2010
Posts: 3

Why is Ultrasonic Flow Computer Required for Gas Chromotograph

08/28/2010 6:17 AM

Dear all,

I would like to know, Why Ultrasonic flow computer required for gas chromotograph for sale and why that interface with analyzer.

Waiting for you positive response.

Regards,

shahid

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Guru
Engineering Fields - Electrical Engineering - New Member

Join Date: Oct 2007
Location: Sour Lake, TX 30°08'59.68"N 94°19'42.81"W
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#1

Re: Why is Ultrasonic Flow Computer Required for Gas Chromotograph

08/28/2010 8:46 AM

http://en.wikipedia.org/wiki/Gas_chromatography

It is written, there:

Conditions which can be varied to accommodate a required analysis include inlet temperature, detector temperature, column temperature and temperature program, carrier gas and carrier gas flow rates, the column's stationary phase, diameter and length, inlet type and flow rates, sample size and injection technique. Depending on the detector(s) (see below) installed on the GC, there may be a number of detector conditions that can also be varied. Some GCs also include valves which can change the route of sample and carrier flow. The timing of the opening and closing of these valves can be important to method development.

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Power-User

Join Date: Mar 2008
Location: Mumbai
Posts: 256
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#2

Re: Why is Ultrasonic Flow Computer Required for Gas Chromotograph

08/29/2010 4:00 AM

If I interpreted Your question correctly then,

Due to the fact that Natural Gas should be sold on the basis of Energy , and not of Voulme

The higher the BTU value the more energy can be obtained

BTU/CF*MMCF=MMBTU

Regards

jose

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Anonymous Poster
#3

Re: Why is Ultrasonic Flow Computer Required for Gas Chromotograph

08/31/2010 10:41 PM

if you are selling to a pipeline the Gas has to have farily constant BTU value of around 1000. Analyzers are used to verify that the BTU is updated in the flow computer and if it goes out of rrange an alarm can be set off to alert the operator.

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