The UPS Ninja just left my package at the door. Inside is the deuterium arc lamp from eBay, supposedly new, but no make/model known, $43. My
project is a pair of Waters 484 HPLC Tunable UV Absorbance Detectors. Proper replacement is $600. One has a lamp with a short/open, the other is end
of life.
New lamp requires higher heater voltage, around 12VAC. The power supply goes thru an ignition cycle after a few minutes, connecting to opposite
filament terminal fixed it, the arc stayed on for 10+ minues. The mounting base will require some modification also.
Anyhow I know lots of analytical equipment uses these, so I thought I'd post my findings.
[Edited on 2012-7-4 by edgecase]ripple - 8-7-2012 at 20:02
Neat! Sooo.... whats your source on ebay? Is the outer jacket quartz too or glass? What is its intended application, or is it just a chinafied
replacement part for UV/Vis spec.'s?
Good work as always- the force is strong with this one!edgecase - 9-7-2012 at 10:14
Well someone bought the other four... just as I found out it's for a current HP 1315A/B unit, prices $600-$1300, yikes! Oh well, I only really need
one.
Quote:
Is the outer jacket quartz too or glass?
Quartz or "UV glass" are both options, not sure exactly what this one has.
Quote:
What is its intended application, or is it just a chinafied replacement part for UV/Vis spec.'s?
It's just a replacement for the above HP, it comes on a pre-aligned base that just pops into the HP detector. It has the window for the visible
spectrum lamp (usually tungsten) to shine thru it, although my Waters 484 doesn't use it.edgecase - 19-10-2012 at 18:43
Update, picked up another lot of 3 used Varian UV lamps, and these ones are electrically a match to the 484 detectors I have. The base needs to be
adapted with some mulffler cement but I got it to calibrate! Now to rev-eng the GPIB commands, got parameter settings working, just need to get the
absorbance readings worked out. I don't see much talk about UV detectors or HPLC on SM sadly.Vogelzang - 21-10-2012 at 10:53
