I have a analog chromatograph, does anyone know how i could hook it up?
Answer:
You will need either some form of integration program or some program that can measure the incoming signal and hold it in memory for later display as an analog signal. My experience in this is probably out of date, but the usual thing was to use a dedicated integrator. You may have to get hold of an analog to digital converter card - but from where? Try chemical or instrumental suppliers.
You will be flooging a dead horse. If you can get a Lab View program and input board, this will have time base, A/D converters, noise filters and other items in software necessary to collect, store, merge, compare data. You will generate your own data base that won't be comparable to anything except your instrument. What you will have, however, is a very simple instrument that will be (if you can keep it running) a useful teaching tool. Sometimes all the bells and whistles of a modern chromatograph will leave students in a daze. Back in the 60's, we used a gas chromatograph which just used two identical heated thermisters and two gas streams (one a standard, the other standard + unknown) feeding an X/Y recorder with a time base. It perfectly demonstrated the operating principles and function of a base line standard, time of travel through a column, function of a detector (specific heat change due to unknown) on a 1 foot square board. Columns were identical lengths of Swagelock tubing filled with diatomacious earth. Took a little skill to identically pack them but it was CHEAP and almost BULLETPROOF.
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