Electronics Forum | Thu Jan 08 16:21:05 EST 2004 | Bill
James: The ovens can be calibrated to help get this a little closer. In the computer box are 3 cards (alike) attached to the motherboard. They are called IPS-7 cards. On these cards are 2 potentiometers to calibrate the T/Cs for the heat zones. There
Electronics Forum | Mon Feb 04 09:42:57 EST 2008 | tonyamenson
I just discovered my reflow oven exhaust had no suction and I'm fixing it now. What I want to know is what happened to my process. FYI. The exhaust from my other oven was getting kicked back into the faulty oven because of this loss of suction. The
Electronics Forum | Mon Feb 04 10:30:10 EST 2008 | tonyamenson
Well the profiler IS out for calibration so I can't use it. However, what piqued my curiosity is your statement concerning uneven heating. On the product we were running we had several non-liquidous solderjoints where as the rest of the joints looke
Electronics Forum | Mon Feb 04 10:17:39 EST 2008 | slthomas
Your oven no doubt compensated by reducing energy to your heaters so it might not be as bad as you think. I'd be more concerned about even heating than over heating. My opinion is that an out of calibration profiler result is better than no result
Electronics Forum | Thu Jan 08 11:06:40 EST 2004 | russ
If I read this correctly you have two identical ovens that were setup the same ie zone temps, fan speeds etc... when you ran the same board through each of them one showed a lower board temp. Is this correct? Is the temp of the board 7 deg. lower t
Electronics Forum | Thu Jan 08 16:43:43 EST 2004 | Dean
Unless your machine (internal) thermocouples are each calibrated and compensated no two machines will deliver eactly the same results. Here are your challenges: 1. Data acquisition equipment A-D converter errors 2. PCB measurement thermocouple (t
Electronics Forum | Thu Apr 15 11:53:37 EDT 2004 | Claude_Couture
Hi everyone, Our QC manager is bugging me about calibrating the TC readings on our reflow ovens. I keep telling him that doing a regular reflow profiling with a mole is sufficient to see if the oven temperature are normal. The manuals state that TC c
Electronics Forum | Thu Apr 15 16:33:40 EDT 2004 | wgaffubar
We never really use to calibrate the thermocouples on our reflow oven or wave solder systems, but we did disconnect the T/C's and input a calibration standard to check that the computer cards were correctly reading the proper temperature for a given
Electronics Forum | Thu Apr 15 20:41:22 EDT 2004 | Ken
There are ledgitimate reasons for checking furnace calibrations, but let me clarify what that is. 1. TC's are not necessarily calibrted. Not unless you need "absolute" accuracy. TC's operate against a (non-linear) standard +/- a tolerance. Most
Electronics Forum | Fri Apr 16 07:34:10 EDT 2004 | Claude_Couture
Ken, thanks for your answer, it is much better presented than what I was fed by our qc. By "calibrating TCs" I meant the readings the controller is displaying on the screen. So that would be the converter that we would check and calibrate. Thank you
