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pmchaukhande
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Join Date: Nov 2006
Posts: 1

Hydrogen Analyzers

11/09/2006 9:23 AM

In our Hydrogen plant we are using Oxygen in Hydrogen Analyzer of 0 - 1.5 % Range and Hydrogen in Oxygen Analyzer of 0 – 2% Range. Protection for tripping Hydrogen Plant ( Electrolyzers ) is provided at 0.9 % Oxygen in Hydrogen and 1.6 % Hydrogen in Oxygen. Hydrogen is available at 08.0 Kg/cm2 and Oxygen is available at 1-2 Kg/cm2 . We are planning to replace these Analyzers.

You are requested to suggest for appropriate solution for this purpose with suitable sampling system to handle raw Oxygen and Hydrogen generated by Electrolysis at the pressure as mentioned earlier.
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masu
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Australia - Member - New Member Fans of Old Computers - H316 - New Member Hobbies - Model Rocketry - New Member

Join Date: Jun 2006
Location: Port Noarlunga, South Australia, AUSTRALIA (South of Adelaide)
Posts: 3048
Good Answers: 75
#1

Re: Hydrogen Analyzers

11/10/2006 6:29 AM

You have fallen into a trap for unsuspecting converts to the metric system. Kg is a measure of mass and you can't readily relate it to a two dimensional area. The correct units of measure for pressure are Pascals which are Newtons per Square Meter. Depending on where you are on earth 1Kg will exert a downward force of approximately 9.8 Newtons therefore:

8Kg/cm2 ≈ 78.4Ncm-2 = 784KPa

1 to 2Kg/cm2 ≈ 98 to 196KPa

The mistake comes from trying to convert pounds force and thinking it means Kg which it doesn't. The correct units are Newtons.

1 pound force ≈ 4.446 Newtons

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