Electronics Forum | Wed Jul 21 19:16:53 EDT 1999 | Dreamsniper
Which among the two profiling method is more reliable/accurate in getting the oven thermal profile? a) using a HIGH-TEMP solder wire then soldering the thermocouples onto the profile points of the board (e.g. component lead etc.) b) not soldering t
Electronics Forum | Wed Feb 24 11:05:13 EST 1999 | justin medernach
| I am profiling a BGA for the first time and I am seeing temperature flucuations on the ramp and cool down from the thermocouple I have placed through the pcb and under the component. I am using a 5 zone convection oven.Any suggestions on the plobl
Electronics Forum | Thu Mar 11 12:45:40 EST 2004 | Daniele
Hi I have a question about proper installing thermocopule to PCB. I have thermocouple which consist of two wires and they are conected at the end by solder bead. I would like to use adhesive tape to connetct it to the PCB. Should i remove solder bea
Electronics Forum | Fri Feb 10 12:28:05 EST 2006 | jdengler
We do the same as SR Tech but add in a check of the thermocouples the oven uses to monitor it's own temp. Annually I attach a thermocouple from a calibrated thermometer to the thermocouple in the oven. I compare the readings. We specify a plus min
Electronics Forum | Fri Sep 27 10:49:41 EDT 2013 | cyber_wolf
So I am reading about K type thermocouples in the IPC 7530 Guidelines and it says : "At temps above 250c it may suffer from temperature cycling hysteresis and may not be the best choice." Uhhh... It looks like the best choice is an N type thermocoup
Electronics Forum | Fri Aug 18 11:50:42 EDT 2000 | Brian W.
I have been using aluminum tape to attach thermocouples lately. I got some when I ordered new thermocouples from KIC. I ran some comparisons using high temp solder and the tape, with no difference. You cut a small square of the tape (approx 1/8" s
Electronics Forum | Mon Nov 30 09:02:13 EST 1998 | Chrys
Drag the iron and molten solder over the thermocouple to the left, encapsulating the bead. Now, obviously if you are left-handed, reverse everything. This is a foolproof way to attach thermocouples. I used to have a lot more difficulty with them u
Electronics Forum | Mon Oct 16 10:07:11 EDT 2006 | realchunks
Wow, 15 degrees C is too much. Is this a new problem or new oven? If it's a new problem several things you can check out. Thermocouple placement may have got knocked into the wrong spot, or it could be dirty. I've seen this happen after a PM and
Electronics Forum | Wed Jan 24 22:38:45 EST 2007 | electrovert
Hello, My first time post up here. I have a problem with thermo runaway on upper zone #5 on the Omni 10 Electrovert. We changed the thermocouple #5 but the problem came back up. We swapped Sensoray board 8 and 9, swapped board #3 (T/C interface boar
Electronics Forum | Sun Mar 25 15:38:07 EDT 2007 | Gibbon!
Couple of things. Type T thermocouples are solder friendly. However usually a header with screw terminals poses no problem as the temperature differential is nil. Getting thermocouple leads wet causes problems because two dissimilar metals + condu
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