hello Mr. Hirmiz, I have some questions about gas flow and analyzer's response. I use this analyzer in a cone calorimeter, I do zeroing with pure nitrogen and span with air (20.95% oxygen). How different oxygen-containing gas flows (L/min) at the same pressure influence the oxygen analyzer's response? What happens if the zeroing is made with a different nitrogen flow or with a different nitrogen pressure respect to sample gas conditions or span gas condition? Many Thanks.
so when viewed from the top, are the magnetic fields slightly off-center over the spheres, one slightly left and the other slightly right? so that when the spheres are displaced they want to turn in opposite directions?
hello Mr. Hirmiz, I'm Instrument technicians, I want to ask one thing. why the position of the coil must be returned to its original position? Thank you.
Called "NULL POSITION" or "BALANCED POSITION" This is when the light beam is "IN THE CENTER" not hitting either photocells At which the measured current through the suspension coil is representing the % Oxygen in the sample In other words O2 inside the measuring chamber causes the light beam to move away from the center on to the left photocell The left photocell commands the current generator to go up in current This current will generate magnetic field around the coils opposite to what Oxygen did which in turn will move the beam backward It will keep moving backward as long as the light beam is hitting the photocell The only time it stops is when it hits the "NULL POSITION" Final current at this Null Position = % Oxygen On the other hand, when % Oxygen goes low , light beam hits the right photocell, in turn it commands the current generator to go down & so on Thanks for asking dear Adi
